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Muscovite

This page kindly sponsored in memory of Laszlo Z. Valachi
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About MuscoviteHide

06846010015155417071118.jpg
Muscovite from Northern Karelia in the window of XVII century.

Northern Karelia, Republic of Karelia, Russia
Formula:
KAl2(AlSi3O10)(OH)2
Colour:
White to colorless, silvery-white, and tinged various colors by impurities.
Lustre:
Vitreous, Silky, Pearly
Hardness:
Specific Gravity:
2.77 - 2.88
Crystal System:
Monoclinic
Name:
The earliest names attributable to muscovite include Muscovy Glass, Cat Silver, and Lapis Specularis (stone mirror); these names appearing in texts in the seventeenth century and before. The stand-alone name 'Muscovite' was used as early as 1794 by Johann Gottfried Schmeisser in his System of Mineralogy and is derived from the term "Muscovy glass," which was in common use by that time. Muscovy Province in Russia yielded sheet mica for a variety of uses. Muscovite and sometimes similar species were earlier called mica (Phillips and Kersey, 1706), glimmer (Phillips and Kersey, 1706), and isinglass (1747 according to OED) but all of these terms are still in use to some degree. It should be noted that mica, glimmer, and isinglass were also used for a variety of materials before these given dates and in those earlier times did not always indicate what would be a mineral, much less muscovite proper. Isinglass, for example, was originally used for a gelatinous bladder found in sturgeon.
Mica Group.

The most common of the Mica Group minerals, it is typically found as massively crystalline material in "books" or in flaky grains as a constituent of many rock types. It is clear with a pearly luster on cleavage faces, often having a sparkly look in rocks.
Several polytypes are known (see below); the most common one is the 2M1 polytype.

It can form a continuous series with celadonite and aluminoceladonite; intermediates are known as the variety phengite and K-deficient variants as illite.

May be confused with margarite and several lithium micas.

Visit gemdat.org for gemological information about Muscovite.


Classification of MuscoviteHide

Approved, 'Grandfathered' (first described prior to 1959)
9.EC.15

9 : SILICATES (Germanates)
E : Phyllosilicates
C : Phyllosilicates with mica sheets, composed of tetrahedral and octahedral nets
Dana 7th ed.:
71.2.2.1
71.2.2a.1

71 : PHYLLOSILICATES Sheets of Six-Membered Rings
2 : Sheets of 6-membered rings with 2:1 layers
16.3.8

16 : Silicates Containing Aluminum and other Metals
3 : Aluminosilicates of K

Pronounciation of MuscoviteHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of MuscoviteHide

Vitreous, Silky, Pearly
Transparency:
Transparent, Translucent
Colour:
White to colorless, silvery-white, and tinged various colors by impurities.
Streak:
White
Hardness:
2½ on Mohs scale
Hardness Data:
Measured
Comment:
2.5 parallel to [001], 4 perpendicular to [001]
Tenacity:
Elastic
Cleavage:
Perfect
Perfect on {001}.
Parting:
On {110} and {010}.
Fracture:
Micaceous
Density:
2.77 - 2.88 g/cm3 (Measured)    2.83 g/cm3 (Calculated)

Optical Data of MuscoviteHide

Type:
Biaxial (-)
RI values:
nα = 1.552 - 1.576 nβ = 1.582 - 1.615 nγ = 1.587 - 1.618
2V:
Measured: 30° to 47°, Calculated: 38° to 42°
Max Birefringence:
δ = 0.035 - 0.042
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v weak
Pleochroism:
Weak
Comments:
Weak when colored

Chemical Properties of MuscoviteHide

Formula:
KAl2(AlSi3O10)(OH)2
IMA Formula:
KAl2(Si3Al)O10(OH)2
Common Impurities:
Cr,Li,Fe,V,Mn,Na,Cs,Rb,Ca,Mg,H2O

Age distributionHide

Recorded ages:
Mesoarchean to Neogene : 2890 Ma to 13.4 Ma - based on 81 recorded ages.

Chemical AnalysisHide

Oxide wt%:
 16
SiO244.96 %
TiO20.04 %
Al2O337.39 %
Cr2O30.01 %
MgO0.02 %
CaO0.01 %
BaO0.01 %
MnO0.02 %
FeO0.04 %
Na2O0.81 %
K2O10.68 %
F0.00 %
Cl0.02 %
H2O4.46 %
O=F,Cl0 %
Total:98.47 %
Sample references:
IDLocalityReference
1Jas Roux, La Chapelle-en-Valgaudemar, Hautes-Alpes, Provence-Alpes-Côte d'Azur, FranceGasquet D, Bertrand J, Paquette J, Lehmann J, Ratzov G, De Ascen?
2Nakatatsu mine, Ono City, Fukui Prefecture, JapanShibata K, Ishihara S (1974): K-Ar ages of the major tungsten and molybdenum deposits in Japan. Economic Geology 69(8) 1207-1214.
3Komaki mine, Komaki, Okuizumo, Nita District, Shimane Prefecture, Japan  "  "
4Manhattan Mining District, Toquima Range, Nye Co., Nevada, USAShawe, D. R., Marvin, R. F., Andriessen, P. A. M., Mehnert, H. H., Merritt, V. M. (1986) Ages of Igneous and Hydrothermal Events in the Round Mountain and Manhattan Gold Districts, Nye County, Nevada. Economic Geology 81. 388-407.
5Round Mountain Mining District, Toquima Range, Nye Co., Nevada, USA  "  "
6Otani Mine, Gyojayama, Kameoka City, Kyoto Prefecture, JapanShibata K, Ishihara S (1974): K-Ar ages of the major tungsten and molybdenum deposits in Japan. Economic Geology 69(8) 1207-1214.
7Kiwada mine, Iwakuni City, Yamaguchi Prefecture, Japan  "  "
8Daeheung mine, Cheonan City, South Chungcheong Province, South KoreaSo, C. S., & Shelton, K. L. (1987) Stable isotope and fluid inclusion studies of gold-and silver-bearing hydrothermal vein deposits, Cheonan-Cheongyang-Nonsan mining district, Republic of Korea; Cheonan area.
9Yaogangxian W-Sn ore field, Yizhang Co., Chenzhou, Hunan, ChinaYuan, S., Peng, J., Hu, R., Li, H., Shen, N., & Zhang, D. (2008) A precise U
10Hongjianbingshan W deposit, Subei Co., Jiuquan, Gansu, ChinaHan C, Xiao W, Zhao G, Sun M, Qu W, Du A (2014): Re-Os geochronology on molybdenites from the Donggebi Mo Deposit in the Eastern Tianshan of the Central Asia Orogenic Belt and its geological significance. Resource Geology 64 (2) 136-148.
11Tuokuzibayi Mine, Habahe Co., Aletai Prefecture, Yili Hasake Autonomous Prefecture, Xinjiang, ChinaYan, S., Chen, W., Wang, Y., Zhang, Z., & Chen, B. (2004) (40) Ar-(39) Ar dating and its significance of the Ertix gold metallogenic belt in the Altay orogen, Xinjiang.
12Yubileinoye Ta deposit, Krasnokordon, Asubulak ore field, Ulan, East Kazakhstan, KazakhstanMurzintsev N.G., Oytseva T.A., Kotler P.D., Vladimirov A.G., Travin A.V., Khromykh S.V., D'yachkov B.A., Kuz'mina O.N., Annikova I.Yu. (2016). Ar/Ar Isotopic age and structural control of spodumene-pegmatite deposits of eastern Kazakhstan. Conference on the Altaids and Uralides March 29
13Lake Boga granite quarry, Lake Boga, Swan Hill Rural City, Victoria, AustraliaMills, S. J., Birch, W. D., Maas, R., Phillips, D., Plimer, I. R. (2008) Lake Boga Granite, northerwestern Victoria: mineralogy, geochemistry and geochronology. Australian Journal of Earth Sciences 55(3), 281-299.
14Nueva Esperanza vein, Capillitas mining district, Andalgalá Department, Catamarca Province, ArgentinaMcBride, S. L., Caelles, J. C., Clark, A. H., & Farrar, E. (1976) Palaeozoic radiometric age provinces in the Andean basement, latitudes 25
15Chapada Cu deposit, Uruaçu, Goiás, BrazilRichardson S V, Jones L M, Kesler S E
16Beluga sapphire property, Kimmirut, Baffin Island, Qikiqtaaluk Region, Nunavut, CanadaBelley, P, et al. (2017) Origin Of Scapolite-Hosted Sapphire (Corundum) Near Kimmirut, Baffin Island, Nunavut, Canada The Canadian Mineralogist,55(4):669 http://dx.doi.org/10.3749/canmin.1700018
17Wodgina Tantalite Mine, Wodgina, Abydos Station, Port Hedland Shire, Western Australia, AustraliaSweetapple, M. T., & Collins, P. L. (2002) Genetic framework for the classification and distribution of Archean rare metal pegmatites in the North Pilbara Craton, Western Australia.

Crystallography of MuscoviteHide

Polytype:
Formula:
Crystal System:
Class (H-M)
Space Group:
Space Group Setting:
Cell Parameters:
Ratio:
Unit Cell Volume (calc):
Z:
Muscovite-1MMuscovite-1MdMuscovite-2M1Muscovite-2M2Muscovite-3T
     
Monoclinic  Monoclinic  Trigonal 
2 - Sphenoidal 2/m - Prismatic 3 2 - Trapezohedral
B2  B2/b  P31 1 2
C2  C2/c   
a = 5.186 Å, b = 8.952 Å, c = 10.12 Å
β = 101.8°

a = 5.19 Å, b = 9.04 Å, c = 20.08 Å
β = 95.5°

a = 5.1963(4) Å, c = 16 Å
a:b:c = 0.579 : 1 : 1.13 a:b:c = 0.574 : 1 : 2.221 a:c = 1 : 3.079
V 459.89 ų
(Calculated from Unit Cell)
 V 937.77 ų
(Calculated from Unit Cell)
 V 374.14 ų
(Calculated from Unit Cell)
     

Crystallographic forms of MuscoviteHide

Crystal Atlas:
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Muscovite no.7 - Goldschmidt (1913-1926)
Muscovite no.12 - Goldschmidt (1913-1926)
3d models and HTML5 code kindly provided by www.smorf.nl.

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0000854MuscoviteRichardson S M, Richardson J W (1982) Crystal structure of a pink muscovite from Archer's Post, Kenya: Implications for reverse pleochroism in dioctahedral micas American Mineralogist 67 69-7519820293
0001076MuscoviteGuggenheim S, Chang Y H, Koster van Groos A F (1987) Muscovite dehydroxylation: High-temperature studies American Mineralogist 72 537-55019870293
0001077MuscoviteGuggenheim S, Chang Y H, Koster van Groos A F (1987) Muscovite dehydroxylation: High-temperature studies American Mineralogist 72 537-55019870293
0001078MuscoviteGuggenheim S, Chang Y H, Koster van Groos A F (1987) Muscovite dehydroxylation: High-temperature studies American Mineralogist 72 537-55019870293
0001079MuscoviteGuggenheim S, Chang Y H, Koster van Groos A F (1987) Muscovite dehydroxylation: High-temperature studies American Mineralogist 72 537-55019870293
0001080MuscoviteGuggenheim S, Chang Y H, Koster van Groos A F (1987) Muscovite dehydroxylation: High-temperature studies American Mineralogist 72 537-55019870293
0002013MuscoviteBrigatti M F, Frigieri P, Poppi L (1998) Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample GA1 from a pegmatite on Maddalena Island, Italy American Mineralogist 83 775-78519980293
0002014MuscoviteBrigatti M F, Frigieri P, Poppi L (1998) Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample RA1 from a pegmatite on Antarctica American Mineralogist 83 775-78519980293
0002015MuscoviteBrigatti M F, Frigieri P, Poppi L (1998) Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample A4b from peraluminous granites at Sardinia, Italy American Mineralogist 83 775-78519980293
0002016MuscoviteBrigatti M F, Frigieri P, Poppi L (1998) Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample GFS15Ab from peraluminous granites at Sardinia, Italy American Mineralogist 83 775-78519980293
0002017MuscoviteBrigatti M F, Frigieri P, Poppi L (1998) Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample H87b from peraluminous granites at Sardinia, Italy American Mineralogist 83 775-78519980293
0002018MuscoviteBrigatti M F, Frigieri P, Poppi L (1998) Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample CC1b from peraluminous granites at Northern Victoria Land, Antarctica American Mineralogist 83 775-78519980293
0002019MuscoviteBrigatti M F, Frigieri P, Poppi L (1998) Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample C3-29b from peraluminous granites at Northern Victoria Land, Antarctica American Mineralogist 83 775-78519980293
0002020MuscoviteBrigatti M F, Frigieri P, Poppi L (1998) Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample B1b from peraluminous granites at Northern Victoria Land, Antarctica American Mineralogist 83 775-78519980293
0002021MuscoviteBrigatti M F, Frigieri P, Poppi L (1998) Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample C6Cb from peraluminous granites at Northern Victoria Land, Antarctica American Mineralogist 83 775-78519980293
0002022MuscoviteBrigatti M F, Frigieri P, Poppi L (1998) Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample C6Bb from peraluminous granites at Northern Victoria Land, Antarctica American Mineralogist 83 775-78519980293
0002023MuscoviteBrigatti M F, Frigieri P, Poppi L (1998) Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample C3-31b from peraluminous granites at Northern Victoria Land, Antarctica American Mineralogist 83 775-78519980293
0019256MuscoviteMesto E, Scordari F, Lacalamita M, Schingaro E (2012) Tobelite and NH4+ -rich muscovite single crystals from Ordovician Armorican sandstones (Brittany, France): Structure and crystal chemistry American Mineralogist 97 1460-14682012Ordovician Armorican sandstones, Brittany, France0293
0005483MuscoviteLiang J, Hawthorne F C (1996) Rietveld refinement of micaceous materials: muscovite-2M1, a comparison with single-crystal structure refinement The Canadian Mineralogist 34 115-12219960293
0005484MuscoviteLiang J, Hawthorne F C (1996) Rietveld refinement of micaceous materials: muscovite-2M1, a comparison with single-crystal structure refinement The Canadian Mineralogist 34 115-12219960293
0005485MuscoviteLiang J, Hawthorne F C (1996) Rietveld refinement of micaceous materials: muscovite-2M1, a comparison with single-crystal structure refinement The Canadian Mineralogist 34 115-12219960293
0005549MuscoviteLiang J, Hawthorne F C, Swainson I P (1998) Triclinic muscovite: X-ray diffraction, neutron diffraction and photo-acoustic FTIR spectroscopy The Canadian Mineralogist 36 1017-102719980293
0005550MuscoviteLiang J, Hawthorne F C, Swainson I P (1998) Triclinic muscovite: X-ray diffraction, neutron diffraction and photo-acoustic FTIR spectroscopy The Canadian Mineralogist 36 1017-102719980293
0005733MuscoviteBrigatti M F, Kile D E, Poppi M (2001) Crystal structure and crystal chemistry of lithium-bearing muscovite-2M1 The Canadian Mineralogist 39 1171-118020010293
0005734MuscoviteBrigatti M F, Kile D E, Poppi M (2001) Crystal structure and crystal chemistry of lithium-bearing muscovite-2M1 The Canadian Mineralogist 39 1171-118020010293
0005735MuscoviteBrigatti M F, Kile D E, Poppi M (2001) Crystal structure and crystal chemistry of lithium-bearing muscovite-2M1 O4 B33 is missing a zero The Canadian Mineralogist 39 1171-118020010293
0005736MuscoviteBrigatti M F, Kile D E, Poppi M (2001) Crystal structure and crystal chemistry of lithium-bearing muscovite-2M1 The Canadian Mineralogist 39 1171-118020010293
0005737MuscoviteBrigatti M F, Kile D E, Poppi M (2001) Crystal structure and crystal chemistry of lithium-bearing muscovite-2M1 The Canadian Mineralogist 39 1171-118020010293
0006358MuscoviteCatti M, Ferraris G, Ivaldi G (1989) Thermal strain analysis in the crystal structure of muscovite at 700 C European Journal of Mineralogy 1 625-63219890298
0006359MuscoviteCatti M, Ferraris G, Ivaldi G (1989) Thermal strain analysis in the crystal structure of muscovite at 700 C T= 700 C European Journal of Mineralogy 1 625-63219890293
0006533MuscoviteCatti M, Ferraris G, Hull S, Pavese A (1994) Powder neutron diffraction study of 2M_1 muscovite at room pressure and at 2 GPa European Journal of Mineralogy 6 171-17819940293
0006534MuscoviteCatti M, Ferraris G, Hull S, Pavese A (1994) Powder neutron diffraction study of 2M_1 muscovite at room pressure and at 2 GPa European Journal of Mineralogy 6 171-17819942293
0006546MuscoviteAmisano-Canesi A, Chiari G, Ferraris G, Ivaldi G, Soboleva S V (1994) Muscovite- and phengite-3T: crystal structure and conditions of formation European Journal of Mineralogy 6 489-4961994Kazakhstan0293
0006547MuscoviteAmisano-Canesi A, Chiari G, Ferraris G, Ivaldi G, Soboleva S V (1994) Muscovite- and phengite-3T: crystal structure and conditions of formation European Journal of Mineralogy 6 489-4961994Dora-Maira0293
0006858MuscoviteBrigatti M F, Galli E, Medici L, Poppi L, Cibin G, Marcelli A, Mottana A (2001) Chromium-containing muscovite: crystal chemistry and XANES spectroscopy European Journal of Mineralogy 13 377-3892001Westland0293
0006859MuscoviteBrigatti M F, Galli E, Medici L, Poppi L, Cibin G, Marcelli A, Mottana A (2001) Chromium-containing muscovite: crystal chemistry and XANES spectroscopy European Journal of Mineralogy 13 377-3892001Northwest Nelson - Campbell Creek0293
0006860MuscoviteBrigatti M F, Galli E, Medici L, Poppi L, Cibin G, Marcelli A, Mottana A (2001) Chromium-containing muscovite: crystal chemistry and XANES spectroscopy European Journal of Mineralogy 13 377-3892001Northwest Nelson - Anatoki River0293
0007908MuscoviteComodi P, Zanazzi P F (1995) High-pressure structural study of muscovite Physics and Chemistry of Minerals 22 170-17719950.05293
0007909MuscoviteComodi P, Zanazzi P F (1995) High-pressure structural study of muscovite Physics and Chemistry of Minerals 22 170-17719952.8293
0007910MuscoviteComodi P, Zanazzi P F (1995) High-pressure structural study of muscovite Physics and Chemistry of Minerals 22 170-17719950.0001293
0007911MuscoviteComodi P, Zanazzi P F (1995) High-pressure structural study of muscovite Physics and Chemistry of Minerals 22 170-17719952.7293
0018220MuscoviteRadoslovich E (1960) The Structure of Muscovite, K Al2 (Si3 Al) O10 (O H)2 _cod_database_code 1100012 Acta Crystallographica 13 919-93219600293
0018279MuscoviteGueven N, Burnham C (1966) The Crystal Structure of 3T Muscovite _cod_database_code 1101031 Zeitschrift fur Kristallographie 65 290-29319660293
0010646MuscoviteGuven N, Burnham C W (1967) The crystal structure of 3T muscovite Snohomish County, Washington, USA Zeitschrift fur Kristallographie 125 163-1831967in granodiorite near Sunrise Copper Prospect, Sultan Basin,0293
0019601MuscoviteGuven N (1971) The crystal structures of 2M1 phengite and 2M1 muscovite Zeitschrift fur Kristallographie 134 196-2121971Tiburon Peninsula, California, USA0293
0019602MuscoviteGuven N (1971) The crystal structures of 2M1 phengite and 2M1 muscovite Zeitschrift fur Kristallographie 134 196-2121971pegmatite in Georgia, USA0293
0018221MuscoviteGuven N, Burnham C (1966) The crystal structure of 3T muscovite _cod_database_code 1100014 Carnegie Institution of Washington: Yearbook 65 290-2931966Sunrise copper prospect, Snohomish Co, Washington, USA0293
0012228MuscoviteTomita K, Shiraki K, Kawano M (1998) Crystal structure of dehydroxylated 2M1 sericite and its relationship with mixed-layer mica/smectite Clay Science 10 423-4411998Goto mine, Nagasaki Prefecture, Japan0293
0012229MuscoviteTomita K, Shiraki K, Kawano M (1998) Crystal structure of dehydroxylated 2M1 sericite and its relationship with mixed-layer mica/smectite Clay Science 10 423-44119980293
0019604MuscoviteRule A C, Bailey S W (1985) Refinement of the crystal structure of phengite-2M1 Clays and Clay Minerals 33 403-4091985Rio de Oro, Spanish Sahara0293
0019597MuscoviteKnurr R A, Bailey S W (1986) Refinement of Mn-substituted muscovite and phlogopite Clays and Clay Minerals 34 7-161986Minas Gerais, Brazil0293
0012259MuscoviteGatineau L (1963) Localisation des remplacements isomorphiques dans la muscovite _cod_database_code 1000042 Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences 256 4648-464919630293
0018219MuscoviteBirle J, Tettenhorst R (1968) Refined Muscovite structure _cod_database_code 1100010 Mineralogical Magazine 36 883-88619680293
0014475MuscoviteMartin-Ramos JD, Rodriguez-Gallego M (1982) Chromian mica from Sierra Nevada, Spain Mineralogical Magazine 46 269-2721982Sierra Nevada, Spain0293
0014740MuscoviteRothbauer R (1971) Untersuchung eines 2M1-muskovits mit neutronenstrahlen Neues Jahrbuch fur Mineralogie, Monatshefte 1971 143-1541971Diamond mine, Black Hills, South Dakota, USA0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

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Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.
Powder Diffraction Data:
d-spacingIntensity
10.01 Å(100)
5.02 Å(60)
4.48 Å(60)
4.46 Å(70)
3.35 Å(100)
3.21 Å(50)
2.59 Å(50)
2.56 Å(90)
Comments:
Data given are for the -2M^1 polytype.

Geological EnvironmentHide

Geological Setting:
Muscovite is common in many different rock types as a primary mineral.

Synonyms of MuscoviteHide

Other Language Names for MuscoviteHide

Catalan:Moscovita
Czech:Muskovit
Dutch:Muscoviet
Esperanto:Muskovito
Finnish:Muskoviitti
Galician:Moscovita
Hungarian:Muszkovit
Italian:Muscovite
Japanese:白雲母
Low Saxon/Low German:Muskovit
Polish:Muskowit
Portuguese:Muscovite
Simplified Chinese:白云母
Slovak:Muskovit
Turkish:Muskovit

Varieties of MuscoviteHide

AdamsiteA variety of muscovite, classed as a margarodite.
Al-illite-hydromicaVariety of Illite very low in K and high in water.
AlurgiteName introduced by Breithaupt in 1865 and characterized by Penfield in 1893 (vide Knurr and Bailey, 1986). Placed by W. T. Schaller (1950) as an intermediate between leucophyllite (now a synonym of aluminoceladonite) and muscovite. A study of Knurr and Ba...
AmmersooiteA variety of Illite capable of fixing Potassium, from Dutch fields.
AstroliteSpherical aggregates composed of radiating tabular crystals.
AvaliteA chromian variety of Illite.
Originally described from Mt Avala, Belgrade, Serbia.
Barium and Chromium-bearing MuscoviteA barium- and chromium-bearing muscovite.
Barium-Vanadium-MuscoviteA barian vanadian variety of Muscovite.
Barium-bearing MuscoviteA barium-rich variety of muscovite.
BatcheloriteA green slaty mineral, originally described by W.F. Petterd (1910) from the Mt. Lyell mine, Tasmania. Re-analysis of visually identical material from the same locality by Bothwell and Moss (1957) showed it to be a slightly Cr-bearing muscovite, giving the...
ChacaltaîteA green chlorite-like varety of muscovite.
Chromium-bearing SericiteA chromium-bearing variety of sericite. See also fuchsite.
DamouriteVery fine-grained, compact muscovite - with a greasy feel, "serpentine-like," and often a fibrous appearance when viewed from a certain direction.
Ferrimuscovite
FuchsiteGreenish, Cr-bearing variety of muscovite (trivalent Cr replaces Al in the crystal structure). Note that trivalent V can also cause a greenish colour in muscovite (cf. vanadian muscovite, roscoelite).
Compare mariposite, a Cr-bearing phengite.
GieseckitePseudomorphs of muscovite after an unknown mineral.
GilbertiteCompact variety of muscovite.
The original chemical analysis of material from Stenagwyn, Cornwall, indicated no potassium or sodium. There were major amounts of silica and alumina, and minor amounts of CaO, MgO, and FeO. Thomson seems to have doubted the...
IlliteMica Group .
Illite JadeA dense variety of illite with reddish banding (caused by microscopic inclusions of hematite), which is used for carving and as an ornamental stone. In addition to hematite, the material usually also contains small quantities of impurities such as quartz,...
Iron(II)-bearing muscoviteAn Fe(II)-bearing variety of muscovite.
LeverrieriteA kaolinite-group clay.
Originally reported from Saint-Etienne, Loire, Rhône-Alpes, France.
LiebeneriteMuscovite pseudomorphous after nepheline, possibly also after cordierite.
Lithium Muscovite (of Levinson)A lithian muscovite with 3-4% Li2O
MaripositeA greenish Cr-bearing "phengite".
See also fuchsite.
Nickel and Chromium-rich IlliteThe illite and a Ni-dominant trioctahedral mica are said to contain up to 22.8 wt.% NiO and up to 11.0 wt.% Cr2O3, which would be the largest as for world's micas at all.
OellacheriteA green to colorless, Ba-bearing variety of muscovite intermediate in chemical composition between true mica and brittle mica.
PersbergiteMuscovite pseudomorphous after nepheline.
PhengitePhengite is an aluminous true mica which contains a relatively high amount of tetrahedrally co-ordinated Si (>3.1 apfu). As the Si amount increases, additional octahedrally co-ordinated cations are necessary for charge balance. This is an uncommon conditi...
Pig's EggA pseudomorph of fine-grained muscovite ("sericite") after orthoclase, found in kaolinized granite.
Rubidian MuscoviteRubidium-bearing muscovite with Rb2O contents of 1 and more mass%. Usual rock forming mineral in late stages of the evolution of many granitic rare-metal (Ta,Be,Cs) natro-lithian pegmatites.
SchernikiteA pink variety of muscovite, described by Bowman (1902).
SericiteA term for a fine-grained white, pale green to oily greenish mica, mainly Muscovite (rarely Paragonite).
Star muscoviteMuscovite forming star-shaped crystal aggregates.
Especially nice specimens come from pegmatites in the Jenipapo district, Minas Gerais, Brazil.
Vanadium-bearing MuscoviteA V-bearing variety of muscovite.
Intermediate member of the muscovite-roscoelite solid-solution range.
VerditeTrade name for a green ornamental stone, primarily an impure fuchsite mica originally from North Kaap river, Kaap Station, South Africa.
WilsoniteDescribed as an Mn-bearing "sericite" or muscovite pseudomorph after scapolite. Hey lists it as an aluminosilicate of Mg and K.
Zinc-bearing MuscoviteZn-bearing variety from the "Mixed Series" formation, Nežilovo, Macedonia. Associates, i.a., with ferricoronadite.

Relationship of Muscovite to other SpeciesHide

Other Members of this group:
BoromuscoviteKAl2(BSi3O10)(OH)2Mon.
Celadonite FamilyA subgroup of the dioctahedral mica group.
Chernykhite(Ba,Na)(V3+,Al,Mg)2((Si,Al)4O10)(OH)2Mon.
ChromphylliteK(Cr,Al)2(AlSi3O10)(OH,F)2Mon. 2/m : B2/b
Glauconite(K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2Mon. 2/m : B2/m
IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2Mon. 2/m : B2/m
Montdorite(K,Na)2(Fe2+,Mn2+,Mg)5(Si4O10)2(OH,F)4Mon. 2/m : B2/m
NanpingiteCsAl2(AlSi3O10)(OH,F)2Mon.
Natro-glauconite(Na,K)(Fe3+,Al,Mg)2((Si,Al)4O10)(OH)2
ParagoniteNaAl2(AlSi3O10)(OH)2Mon.
PhengiteKAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2Mon. 2/m : B2/b
ShirokshiniteKNaMg2(Si4O10)F2Mon. 2/m : B2/m
Tobelite(NH4,K)Al2(AlSi3O10)(OH)2Mon.
Forms a series with:

Common AssociatesHide

Associated Minerals Based on Photo Data:
1,167 photos of Muscovite associated with QuartzSiO2
1,013 photos of Muscovite associated with AlbiteNa(AlSi3O8)
882 photos of Muscovite associated with AquamarineBe3Al2Si6O18
817 photos of Muscovite associated with FluoriteCaF2
652 photos of Muscovite associated with FluorapatiteCa5(PO4)3F
415 photos of Muscovite associated with SpessartineMn2+3Al2(SiO4)3
392 photos of Muscovite associated with SchorlNa(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
384 photos of Muscovite associated with ScheeliteCa(WO4)
349 photos of Muscovite associated with MicroclineK(AlSi3O8)
307 photos of Muscovite associated with Smoky QuartzSiO2

Related Minerals - Nickel-Strunz GroupingHide

9.EC.BalestraiteKLi2V5+Si4O12Mon. 2 : B2
9.EC.05MinnesotaiteFe2+3Si4O10(OH)2Tric. 1 : P1
9.EC.05TalcMg3Si4O10(OH)2Tric. 1 : P1
9.EC.05WillemseiteNi3Si4O10(OH)2Mon.
9.EC.9.EC.VoloshiniteRb(LiAl1.51.5)(Al0.5Si3.5)O10F2Mon. 2/m : B2/b
9.EC.10FerripyrophylliteFe3+Si2O5(OH)Mon.
9.EC.10PyrophylliteAl2Si4O10(OH)2Tric. 1
9.EC.15BoromuscoviteKAl2(BSi3O10)(OH)2Mon.
9.EC.15CeladoniteK(Mg,Fe2+)Fe3+(Si4O10)(OH)2Mon. 2/m : B2/m
9.EC.15Chernykhite(Ba,Na)(V3+,Al,Mg)2((Si,Al)4O10)(OH)2Mon.
9.EC.15Montdorite(K,Na)2(Fe2+,Mn2+,Mg)5(Si4O10)2(OH,F)4Mon. 2/m : B2/m
9.EC.15NanpingiteCsAl2(AlSi3O10)(OH,F)2Mon.
9.EC.15ParagoniteNaAl2(AlSi3O10)(OH)2Mon.
9.EC.15RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2Mon. 2/m : B2/b
9.EC.15Tobelite(NH4,K)Al2(AlSi3O10)(OH)2Mon.
9.EC.15AluminoceladoniteK(Mg,Fe2+)Al(Si4O10)(OH)2Mon.
9.EC.15ChromphylliteK(Cr,Al)2(AlSi3O10)(OH,F)2Mon. 2/m : B2/b
9.EC.15FerroaluminoceladoniteK(Fe2+,Mg)(Al,Fe3+)(Si4O10)(OH)2Mon. 2/m : B2/m
9.EC.15FerroceladoniteK(Fe2+,Mg)(Fe3+,Al)(Si4O10)(OH)2Mon. 2/m : B2/m
9.EC.15ChromceladoniteK(Mg,Fe2+)(Cr,Al)(Si4O10)(OH)2Mon.
9.EC.15TainioliteKLiMg2(Si4O10)F2Mon.
9.EC.15Ganterite(Ba,Na,K)(Al,Mg)2(AlSi3O10)(OH)2Mon.
9.EC.20AnniteKFe2+3(AlSi3O10)(OH)2Mon. 2/m : B2/m
9.EC.20EphesiteNaLiAl2(Al2Si2O10)(OH)2Tric.
9.EC.20HendricksiteKZn3(Si3Al)O10(OH)2Mon. 2/m : B2/m
9.EC.20Masutomilite(K,Rb)(Li,Mn3+,Al)3(AlSi3O10)(F,OH)2Mon.
9.EC.20NorrishiteKLiMn3+2(Si4O10)O2Mon. 2/m : B2/m
9.EC.20PhlogopiteKMg3(AlSi3O10)(OH)2Mon. 2/m : B2/m
9.EC.20PolylithioniteKLi2Al(Si4O10)(F,OH)2Mon. 2/m : B2/b
9.EC.20PreiswerkiteNaMg2Al(Al2Si2O10)(OH)2Mon.
9.EC.20SiderophylliteKFe2+2Al(Al2Si2O10)(OH)2Mon.
9.EC.20TetraferriphlogopiteKMg3(Fe3+Si3O10)(OH,F)2
9.EC.20FluorotetraferriphlogopiteKMg3(Fe3+Si3O10)F2Mon. 2/m : B2/m
9.EC.20Wonesite(Na,K)(Mg,Fe,Al)6((Al,Si)4O10)2(OH,F)4Mon. 2/m : B2/m
9.EC.20EastoniteKMg2Al(Al2Si2O10)(OH)2Mon.
9.EC.20TetraferrianniteKFe2+3(Si3Fe3+)O10(OH)2Mon.
9.EC.20TrilithioniteK(Li1.5Al1.5)(AlSi3O10)(F,OH)2Mon. 2/m : B2/b
9.EC.20FluoranniteKFe2+3(Si3Al)O10F2Mon.
9.EC.20ShirokshiniteKNaMg2(Si4O10)F2Mon. 2/m : B2/m
9.EC.20ShirozuliteKMn2+3(Si3Al)O10(OH)2Mon. 2/m : B2/m
9.EC.20SokolovaiteCsLi2Al(Si4O10)F2Mon.
9.EC.20AspidoliteNaMg3(AlSi3O10)(OH)2Mon. 2/m : B2/m
9.EC.20FluorophlogopiteKMg3(Si3Al)O10F2Mon. 2/m : B2/m
9.EC.20UM2004-49-SiO:AlCsFHKLi(Cs,K)(Al,Li)2.6((Si,Al)4O10)(F,OH)2
9.EC.20Suhailite(NH4)Fe2+3(AlSi3O10)(OH)2Mon. 2/m : B2/m
9.EC.20YangzhumingiteKMg2.5(Si4O10)F2Mon. 2/m : B2/m
9.EC.20OrloviteKLi2Ti(Si4O10)OFMon. 2 : B2
9.EC.20OxyphlogopiteK(Mg,Ti,Fe)3[(Si,Al)4O10](O,F)2Mon. 2/m : B2/m
9.EC.30MargariteCaAl2(Al2Si2O10)(OH)2Mon.
9.EC.35Anandite(Ba,K)(Fe2+,Mg)3((Si,Al,Fe)4O10)(S,OH)2Mon. 2/m : B2/b
9.EC.35BityiteLiCaAl2(AlBeSi2O10)(OH)2Mon. 2/m : B2/b
9.EC.35ClintoniteCa(Mg,Al)3(Al3SiO10)(OH)2Mon. 2/m : B2/m
9.EC.35Kinoshitalite(Ba,K)(Mg,Mn2+,Al)3(Al2Si2O10)(OH)2Mon.
9.EC.35Ferrokinoshitalite(Ba,K)(Fe2+,Mg)3(Al2Si2O10)(OH,F)2Mon.
9.EC.35Oxykinoshitalite(Ba,K)(Mg,Ti,Fe3+,Fe2+)3((Si,Al)4O10)(O,OH,F)2Mon. 2/m : B2/m
9.EC.35FluorokinoshitaliteBaMg3(Al2Si2O10)F2Mon. 2/m : B2/m
9.EC.40Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2OMon.
9.EC.40Kurumsakite(Zn,Ni,Cu)8Al8V5+2Si5O35 · 27H2O (?)Orth.
9.EC.40Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2OMon. 2/m : B2/m
9.EC.40NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2OMon.
9.EC.40VolkonskoiteCa0.3(Cr,Mg,Fe)2((Si,Al)4O10)(OH)2 · 4H2OMon.
9.EC.40Yakhontovite(Ca,Na)0.5(Cu,Fe,Mg)2(Si4O10)(OH)2 · 3H2OMon.
9.EC.45HectoriteNa0.3(Mg,Li)3(Si4O10)(F,OH)2Mon.
9.EC.45SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2OMon.
9.EC.45SauconiteNa0.3Zn3((Si,Al)4O10)(OH)2 · 4H2OMon.
9.EC.45SpadaiteMgSiO2(OH)2 · H2O (?)
9.EC.45Stevensite(Ca,Na)xMg3-x(Si4O10)(OH)2Mon.
9.EC.45SwineforditeLi(Al,Li,Mg)4((Si,Al)4O10)2(OH,F)4 · nH2OMon.
9.EC.45ZincsiliteZn3Si4O10(OH)2 · 4H2O (?)Mon.
9.EC.45FerrosaponiteCa0.3(Fe2+,Mg,Fe3+)3((Si,Al)4O10)(OH)2 · 4H2OMon.
9.EC.50VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2OMon. 2/m
9.EC.55Baileychlore(Zn,Fe2+,Al,Mg)6(Si,Al)4O10(OH)8Tric. 1
9.EC.55Chamosite(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8Mon.
9.EC.55ClinochloreMg5Al(AlSi3O10)(OH)8Mon. 2/m : B2/m
9.EC.55Cookeite(Al2Li)Al2(AlSi3O10)(OH)8Mon. 2/m
9.EC.55FranklinfurnaceiteCa2Fe3+Mn2+3Mn3+(Zn2Si2O10)(OH)8Mon. 2 : B2
9.EC.55Gonyerite(Mn2+,Mg)5Fe3+(Fe3+Si3O10)(OH)8Orth.
9.EC.55Nimite(Ni,Mg,Al)6((Si,Al)4O10)(OH)8Mon.
9.EC.55Orthochamosite(Fe2+,Mg,Fe3+)5Al(AlSi3O10)(OH,O)8
9.EC.55PennantiteMn2+5Al(AlSi3O10)(OH)8Tric.
9.EC.55SudoiteMg2Al3(Si3Al)O10)(OH)8Mon.
9.EC.55DonbassiteAl4.33(AlSi3O10)(OH)8Mon. 2 : B2
9.EC.55GlagoleviteNa(Mg,Al)6(AlSi3O10)(OH,O)8Tric. 1 : P1
9.EC.55BorocookeiteLi1+3xAl4-x(BSi3O10)(OH)8
9.EC.60AliettiteCa0.2Mg6((Si,Al)8O20)(OH)4 · 4H2OMon.
9.EC.60Corrensite(Mg,Fe)9((Si,Al)8O20)(OH)10 · nH2OOrth.
9.EC.60DozyiteMg7Al2(Al2Si4O15)(OH)12Mon.
9.EC.60HydrobiotiteK(Mg,Fe2+)6((Si,Al)8O20)(OH)4 · nH2OMon.
9.EC.60Karpinskite(Ni,Mg)2Si2O5(OH)2 (?)Mon.
9.EC.60KulkeiteMg8Al(AlSi7O20)(OH)10Mon.
9.EC.60LunijianlaiteLi0.7Al6.2(AlSi7O20)(OH,O)10Mon.
9.EC.60Rectorite(Na,Ca)Al4((Si,Al)8O20)(OH)4 · 2H2OMon.
9.EC.60Saliotite(Li,Na)Al3(AlSi3O10)(OH)5Mon.
9.EC.60TosuditeNa0.5(Al,Mg)6((Si,Al)8O18)(OH)12 · 5H2OMon. 2 : B2
9.EC.60BrinrobertsiteNa0.3Al4(Si4O10)2(OH)4 · 3.5 H2OMon.
9.EC.65Macaulayite(Fe,Al)24Si4O43(OH)2Mon.
9.EC.70BurckhardtitePb2(Fe3+Te6+)[AlSi3O8]O6Trig. 3m (3 2/m) : P3 1m
9.EC.75Ferrisurite(Pb,Ca)2.4Fe3+2(Si4O10)(CO3)1.7(OH)3 · nH2OMon.
9.EC.75Surite(Pb,Ca)3(Al,Fe2+,Mg)2((Si,Al)4O10)(CO3)2(OH)2Mon.
9.EC.75Niksergievite(Ba,Ca)2Al3(AlSi3O10)(CO3)(OH)6 · nH2OMon.
9.EC.80KegelitePb8Al4(Si8O20)(SO4)2(CO3)4(OH)8Mon.

Related Minerals - Dana Grouping (8th Ed.)Hide

71.2.2a.2ParagoniteNaAl2(AlSi3O10)(OH)2Mon.
71.2.2a.3Chernykhite(Ba,Na)(V3+,Al,Mg)2((Si,Al)4O10)(OH)2Mon.
71.2.2a.4RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2Mon. 2/m : B2/b
71.2.2a.5Glauconite(K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2Mon. 2/m : B2/m
71.2.2a.6CeladoniteK(Mg,Fe2+)Fe3+(Si4O10)(OH)2Mon. 2/m : B2/m
71.2.2a.7Tobelite(NH4,K)Al2(AlSi3O10)(OH)2Mon.
71.2.2a.8NanpingiteCsAl2(AlSi3O10)(OH,F)2Mon.
71.2.2a.9BoromuscoviteKAl2(BSi3O10)(OH)2Mon.
71.2.2a.10Montdorite(K,Na)2(Fe2+,Mn2+,Mg)5(Si4O10)2(OH,F)4Mon. 2/m : B2/m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

16.3.1LithositeK6Al4Si8O25 · 2H2OMon.
16.3.2KaliophiliteKAlSiO4Trig. 3 : P3
16.3.3KalsiliteKAlSiO4Hex. 6 2 2 : P63 2 2
16.3.4LeuciteK(AlSi2O6)Tet. 4/m : I41/a
16.3.5MicroclineK(AlSi3O8)Tric. 1
16.3.6OrthoclaseK(AlSi3O8)Mon. 2/m : B2/m
16.3.7SanidineK(AlSi3O8)Mon. 2/m : B2/m

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Muscovite in petrologyHide

References for MuscoviteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Woodard, H.H. (1951) The Geology and Paragenesis of the Lord Hill pegmatite, Stoneham, Maine. American Mineralogist: 36: 869-883.
Heinrich, E.W., Levinson, A.A. (1953) Studies in the mica group: mineralogy of the rose muscovites. American Mineralogist: 38: 25-49.
Yoder, H.S., Eugster, H.P. (1955) Synthetic and natural muscovites. Geochimica et Cosmochimica Acta: 8: 225-280.
Yoder, H.S., jr. (1957): Experimental studies on micas: A synthesis. Clays and Clay Minerals 6, 42-60.
Nicol, A.W. (1964) Topotactic transformation of muscovite under mild hydrothermal conditions. Clays and Clay Minerals: 12: 11-19.
Güven, N. (1967) The crystal structure of 2M1 phengite and 2M1 muscovite. Carnegie Inst. Washington Year Book: 66: 487-492.
Güven, N., Burnham, C. W. (1967): The crystal structure of 3T muscovite. Zeitschrift für Kristallographie, 125, 163-183.
Brearley, A.J. (1986) An electron optical study of muscovite breakdown in pelitic xenoliths during pyrometamorphism. Mineralogical Magazine: 50: 385-397.
Guggenheim, S., Chang, Y.-H., and Koster van Groos, A.F. (1987) Muscovite dehydroxylation: High-temperature studies. American Mineralogist: 72: 537-550.
Guidotti, C.V., Mazzoli, C., Sassi, F.P., Blencoe, J.G. (1992) Compositional controls on the cell dimensions of 2M1 muscovite and paragonite. European Journal of Mineralogy: 4: 283-292.
Gaines, R.V., Skinner, H.C.W., Foord, E.E., Mason, B., Rosenzweig, A. (1997) Dana's New Mineralogy: The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana: 1448.
Rieder, M., Cavazzani, G., D'Yakonov, Y.S., Frank-Kamenetskii, V.A., Gottardi, G., Guggenheim, S., Koval, P.V., Müller, G., Neiva, A.M.R., Radaslovich, E.W., Robert, J.-L., Sassi, F.P., Takeda, H., Weiss, Z., Wones, D.R. (1998) Nomenclature of the micas. The Canadian Mineralogist: 36: 905-912.
Guidotti, C.V., Sassi, F.P., Comodi, P., Zanazzi, P.F., Blencoe, J.G. (2000): The contrasting responses of muscovite and paragonite to increasing pressure: petrological implications. Canadian Mineralogist 38, 707-712.
Busigny, V., Cartigny, P., Philippot, P., Javoy, M. (2003) Ammonium quantification in muscovite by infrared spectroscopy. Chemical Geology: 198: 21-31.

Internet Links for MuscoviteHide

Significant localities for MuscoviteHide

Showing 21 significant localities out of 29,598 recorded on mindat.org.

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Canada
 
  • Québec
    • Abitibi-Témiscamingue
      • La Vallée-de-l'Or RCM
        • Réservoir-Dozois
Olivier Langelier Collection
Peru
 
  • Áncash
    • Pallasca Province
      • Pampas District
Mineralogical Record 28, No. 4 (1997); collections of Rock Currier, Jack Crowley, Jaroslav Hyrsl and Alfredo Petrov.
Switzerland
 
  • Valais
    • Martigny
      • Mont Chemin mining district
USA
 
  • California
[Phengite var: Mariposite] Bowen, O.E., Jr. & C.H. Gray, Jr. (1957), Mines and mineral deposits of Mariposa County, California: California Journal of Mines and Geology: 53(1&2): 34-343; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 425.
    • San Luis Obispo Co.
      • Santa Lucia Mts (Santa Lucia Range)
        • San Simeon
Ron Layton collection
  • Connecticut
    • Fairfield County
      • Redding (Reading)
        • Branchville
Cameron et al (1954) USGS Prof Paper 255; Shainin (1946); Rocks & Minerals (1995) 70:396-409
    • Hartford Co.
      • Glastonbury
        • South Glastonbury
Rocks & Min 74:121 (1999); Rocks and Minerals (1999) 74:110-121
    • Middlesex Co.
      • East Hampton (Chatham)
LMSCC Newsletter, Sept. 2005 Harold Moritz collection, 1991-2009
      • Haddam
        • Haddam Neck
Mineralogical Magazine 1902 13 : 97-121.; Scovil, Jeffrey A. (1992): Famous Mineral Localities: the Gillette Quarry, Haddam Neck, Connecticut. (Mineralogical Record, 23(1):19-28.); Cameron, Eugene N. and others. (1954) PEGMATITE INVESTIGATIONS 1942-45 NEW ENGLAND. U.S. Geological Survey, Professional Paper 255.
[var: Schernikite] Adam Berlutti collection
      • Portland
        • Collins Hill
          • Strickland pegmatite (Strickland-Cramer Quarry; Strickland-Cramer Mine; Strickland-Cramer Feldspar-Mica Quarries)
Cameron, Eugene N., Larrabee, David M., McNair, Andrew H., Page, James T., Stewart, Glenn W., and Shainin, Vincent E. (1954): Pegmatite Investigations 1942-45 New England; USGS Professional Paper 255: 333-338.; Sterrett, Douglas B. (1923), Mica Deposits Of The United States, USGS Bulletin 740: 65-67.
Januzzi, Ronald. (1976), Mineral Localities of Connecticut and Southeastern New York State. Taylor Associates/Mineralogical Press, Danbury.
    • New Haven Co.
Anthony Scalzi collection
  • Illinois
    • Calhoun Co.
      • Gilead
[var: Illite] GSA Bulletin; August 2001; v. 113; no. 8; p. 1092-1104
  • Maine
    • Sagadahoc Co.
      • Topsham
[var: Schernikite] Cliff Trebilcock collection; Clara Brennan, Samuel M. Cameron, and Mona-Liza C. Sirbescu (2016) Crystallization of the Fisher Quarry Pegmatite, Sagadahoc Co., Maine: Preliminary Insights from Fluid Inclusions. in Second Eugene E. Foord Pegmatite Symposium July 15-19, 2016 Colorado School of Mines campus, Golden, Colorado
  • North Carolina
    • Catawba Co.
      • Hickory
K. Wood collection
    • Mitchell Co.
      • Spruce Pine
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
  • Pennsylvania
    • Delaware Co.
      • Middletown Township
Gordon, Mineralogy of Pennsylvania, 1922 p. 190
  • South Dakota
    • Pennington Co.
      • Keystone Mining District
        • Keystone
Dana 6: 1088; Rocks & Minerals: 10: 121-122,146-147.; USGS Bull 380D; U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.; Norton, James J. (1964) Pegmatites and other Precambrian Rocks in the Southern Black Hills; Geology and mineral deposits of some pegmatites in the southern Black Hills, South Dakota. USGS Professional Paper 297E.
  • Texas
    • Burnet Co.
F Roberts, 2006
 
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