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Meurigite-K

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About Meurigite-KHide

06270410014948374494962.jpg
John Meurig Thomas
Formula:
KFe3+8(PO4)6(OH)7 · 6.5H2O
Colour:
Yellowish brown, cream to white, pale to canary yellow
Lustre:
Sub-Vitreous, Waxy, Silky
Hardness:
3
Specific Gravity:
2.96
Crystal System:
Monoclinic
Name:
Named in 1996 by William D. Birch, Allan Pring, P. G. Self, R. B. Gibbs, E. Kleck, Martin C. Jensen, Eugene Edward Foord in honor of John Meurig Thomas [born December 15, 1932 Llanelli, South Wales, United Kingdom], a prolific reasearcher and crystal chemist known for his work on heterogeneous catalysis, solid-state chemistry, and surface and materials science, University of Cambridge, Cambridge, England, UK.
Possibly identical to phosphofibrite (Kolitsch, 1999; Kampf & Kolitsch, 2008 and Kampf et al., 2009), although the latter appears to be K-deficient (K < 0.5 pfu).
See also the sodium analogue meurigite-Na.

Previously called meurigite (renamed in 2009).


Classification of Meurigite-KHide

Approved
Approval Year:
1995
8.DJ.20

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
J : With large and medium-sized cations, (OH, etc.):RO4 = 1:1
42.13.14.1

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
13 : Miscellaneous

Physical Properties of Meurigite-KHide

Sub-Vitreous, Waxy, Silky
Transparency:
Translucent
Comment:
depending on the packing of the fibers
Colour:
Yellowish brown, cream to white, pale to canary yellow
Streak:
White
Hardness:
Hardness Data:
Estimated
Tenacity:
Brittle
Cleavage:
Perfect
{001}
Fracture:
None observed
Density:
2.96 g/cm3 (Measured)    2.86 g/cm3 (Calculated)

Optical Data of Meurigite-KHide

Type:
Biaxial (+)
RI values:
nα = 1.780(5) nβ = 1.785(5) nγ = 1.800(5)
2V:
Calculated: 60°
Birefringence:
0.020
Max Birefringence:
δ = 0.020
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r > v distinct
Pleochroism:
Non-pleochroic

Chemical Properties of Meurigite-KHide

Formula:
KFe3+8(PO4)6(OH)7 · 6.5H2O

Crystallography of Meurigite-KHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Cell Parameters:
a = 29.018(5) Å, b = 5.1892(6) Å, c = 19.695(3) Å
β = 106.987(1)°
Ratio:
a:b:c = 5.592 : 1 : 3.795
Unit Cell V:
2836.3 ų
Z:
4
Morphology:
tabular on [001] and elongated parallel to [010]

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
9.41 Å(60)
4.84 Å(90)
4.32 Å(70)
4.25 Å(50)
3.470 Å(60)
3.216 Å(100)
3.116 Å(80)

Type Occurrence of Meurigite-KHide

General Appearance of Type Material:
Drusy coating of fibrous yellow rosettes
Geological Setting of Type Material:
Oxide zone of a copper deposit
Associated Minerals at Type Locality:

Synonyms of Meurigite-KHide

Other Language Names for Meurigite-KHide

German:Meurigit-K
Spanish:Meurigita-K

Common AssociatesHide

Associated Minerals Based on Photo Data:
7 photos of Meurigite-K associated with LeucophosphiteKFe3+2(PO4)2(OH) · 2H2O
4 photos of Meurigite-K associated with WavelliteAl3(PO4)2(OH,F)3 · 5H2O
4 photos of Meurigite-K associated with StrengiteFePO4 · 2H2O
3 photos of Meurigite-K associated with RuifrancoiteCa2(◻,Mn)2(Fe3+,Mn,Mg)4Be4(PO4)6(OH)4(OH,H2O)2 · 4H2O
3 photos of Meurigite-K associated with QuartzSiO2
3 photos of Meurigite-K associated with VarisciteAlPO4 · 2H2O
3 photos of Meurigite-K associated with TurquoiseCu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O
3 photos of Meurigite-K associated with RockbridgeiteFe2+Fe3+4(PO4)3(OH)5
3 photos of Meurigite-K associated with CyriloviteNaFe3+3(PO4)2(OH)4 · 2H2O
2 photos of Meurigite-K associated with CacoxeniteFe3+24AlO6(PO4)17(OH)12 · 75H2O

Related Minerals - Nickel-Strunz GroupingHide

8.DJ.05JohnwalkiteK(Mn2+,Fe2+,Fe3+)2(Nb5+,Ta5+)(PO4)2O2 · 2(H2O,OH)Orth.
8.DJ.05OlmsteaditeKFe2+2(Nb5+,Ta5+)(PO4)2O2 · 2H2OOrth.
8.DJ.10GatumbaiteCaAl2(PO4)2(OH)2 · H2OMon. 2/m : P2/m
8.DJ.15CamgasiteCaMg(AsO4)(OH) · 5H2OMon. 2/m : P21/m
8.DJ.20Phosphofibrite(H2O,K)3.5Fe8(PO4)6(OH)7 · 5H2OMon. 2/m
8.DJ.20Meurigite-NaNaFe3+8(PO4)6(OH)7 · 6.5H2OMon. 2/m : B2/b
8.DJ.25JungiteCa2Zn4Fe3+8(PO4)9(OH)9 · 16H2OOrth.
8.DJ.30WycheproofiteNaAlZr(PO4)2(OH) · H2OTric.
8.DJ.35ErcititeNa2Mn3+2(PO4)2(OH)2 · 4H2OMon.
8.DJ.40MrázekiteBi2Cu3(PO4)2O2(OH)2 · H2OMon. 2/m
8.DJ.45AttikaiteCa3Cu2Al2(AsO4)4(OH)4 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pban

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

42.13.14.2Meurigite-NaNaFe3+8(PO4)6(OH)7 · 6.5H2OMon. 2/m : B2/b
42.13.14.3Phosphofibrite(H2O,K)3.5Fe8(PO4)6(OH)7 · 5H2OMon. 2/m

Fluorescence of Meurigite-KHide

Not fluorescent in UV

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.

References for Meurigite-KHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Birch, W. D., Pring, A., Self, P. G., Gibbs, R. B., Keck, E., Jensen, M. C. and Foord, E. E. (1996): Meurigite, a new fibrous iron phosphate resembling kidwellite. Mineralogical Magazine 60, 787-793.
Kolitsch, U. (1999): Evidence for the identity of meurigite and phosphofibrite by transmission electron microscopy and X-ray powder diffraction. European Journal of Mineralogy: 11, Beih. No. 1, 132.
Mineralogical Record: 28: 143.
Kampf, A.R., J.J.Pluth, & Y. Chen (2007): The crystal structure of meurigite. American Mineralogist 92, 1518-1534.
A. R. Kampf and U. Kolitsch (2008): The relationship between phosphofibrite and meurigite. M&M6, 6th Intern. Conf. on Mineralogy & Museums, Colorado School of Mines, Golden, Colorado, USA, September 7-9, 2008; Program and Abstract Volume, 26.
A. R. Kampf, P. M. Adams, U. Kolitsch and I. M. Steele (2009): Meurigite-Na, a new species, and the relationship between phosphofibrite and meurigite. Am. Mineral. 94, 720-727.

Internet Links for Meurigite-KHide

Localities for Meurigite-KHide

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.
Australia
 
  • Victoria
    • Buloke Shire
      • Wycheproof
Mineralogical Magazine, 60, 787-793 W.D.Birch 1996. Portlandite and other recent mineral discoveries in the granites at Lake Boga, Wycheproof and Pyramid Hill, Victoria. Australian Journal of Mineralogy Vol.2, No.2, Dec. 1996
Brazil
 
  • Minas Gerais
    • Conselheiro Pena
Luiz Menezes
    • Galiléia
      • Sapucaia do Norte
Luis Menezes specimens at Denver show, 2008.
Chile
 
  • Tarapacá
    • Tamarugal Province
      • Collahuasi District
Sulphides analysed by geology dep. of company; sulphates, phosphates, analysed by Bob Jenkins (Usa) 2007
Czech Republic
 
  • Plzeň Region
    • Rokycany District
Janouš, F.: Minerály z Kněží hory u Těškova (okres Rokycany), Minerál, 1995, roč. 3, č. 6, s. 367-369.
  • South Bohemian Region
    • Písek District
Sejkora J., Cícha J., Jebavá I.: Minerální asociace fosfátů z Čížové u Písku (Česká republika). Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 2011, 19, 1, 1-26.
S. Mirete photo
France
 
  • Auvergne-Rhône-Alpes
    • Allier
      • Ébreuil
        • Échassières
Le Règne Minéral, (33), 5-25.
  • Occitanie
    • Aveyron
      • La Capelle-Bleys
Gayraud, L., Gineste, C., Bernadi, G. & Johannet, J.-M. (2011) - Bleys et Puech de Compolibat: deux localités minéralogiques remarquables du massif de leucogranite de La Capelle-Bleys (Aveyron), Le Cahier des Micromonteurs, 111(1), 7-23
    • Tarn
      • Castelnau-de-Brassac
        • Fumade
Lheur, C. & Meisser, N. (2013): Nouveautés à Fumade (Tarn): clinobisvanite, meurigite-K, sigloite et sudoite. Le Règne Minéral, 110, 52-53.
Germany
 
  • Baden-Württemberg
    • Freiburg
      • Ortenaukreis
        • Oberwolfach
WALENTA, K. and THEYE, T. (2001): Meurigit von der Grube Clara. Aufschluss 52, 243-246.
  • Bavaria
    • Upper Palatinate
      • Neustadt an der Waldnaab
        • Pleystein
Dill, H.G., Weber, B. (2009), Pleystein-City on Pegmatite, 4th International Symposium on Granitic Pegmatites, Recife, Brazil.
        • Waidhaus
          • Hagendorf
http://www.berthold-weber.de/h_miner.htm
Wittern: "Mineralfundorte in Deutschland", 2001
  • Saxony
    • Görlitz District
      • Rengersdorf
Wittern: "Mineralfundorte in Deutschland", 2001
USA
 
  • Nevada
    • Eureka Co.
      • Carlin Trend
        • Maggie Creek Mining Subdistrict
NBMG Bull 106 Geology and Mineral Resources of Elko County, Nevada
      • Lynn Mining District
NBMG Spec. Pub. 31 Minerals of Nevada
    • Humboldt Co.
      • Iron Point Mining District
        • Valmy
Dr. William S. Wise presentation to Northwest Micro Mineral Study Group on 1 May 2004, Update on Mineralogy of the Silver Coin Mine, Iron Point District, Edna Mountains, Humboldt Co., Nevada
    • Pershing Co.
      • Humboldt Range
        • Willard Mining District
[MinRec 32:297]
  • New Mexico
    • Grant Co.
      • Santa Rita Mining District
        • Santa Rita
Mineralogical Magazine 60:787-793.; Rocks & Minerals 84:492-500
  • South Dakota
    • Lawrence Co.
      • Bald Mountain Mining District (Portland Mining District)
Mineral Webzine, Dec. 2001
 
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