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Mackayite

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About MackayiteHide

08230480014947046892203.jpg
John William Mackay
Formula:
Fe3+(Te4+2O5)(OH)
Colour:
Pale bottle-green, olive green, brownish green, greenish black; greenish yellow to yellowish green in transmitted light.
Lustre:
Vitreous
Hardness:
Specific Gravity:
4.86
Crystal System:
Tetragonal
Name:
For John William Mackay (1831-1902), Irish-American financier and mine operator on the Comstock lode, Nevada, who endowed the School of Mines of the University of Nevada (also honored by naming the school the Mackay School of Mines).
This page provides mineralogical data about Mackayite.


Classification of MackayiteHide

Approved, 'Grandfathered' (first described prior to 1959)
4.JL.10

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
L : Tellurites with additional anions, without H2O
34.6.1.1

34 : SELENITES, TELLURITES AND SULFITES
6 : Anhydrous Selenites, Tellurites and Sulfites containing Hydroxyl or Halogen
28.3.23

28 : Selenites, Selenates, Tellurites, and Tellurates
3 : Tellurites

Physical Properties of MackayiteHide

Vitreous
Transparency:
Transparent
Colour:
Pale bottle-green, olive green, brownish green, greenish black; greenish yellow to yellowish green in transmitted light.
Streak:
Pale green
Hardness:
4½ on Mohs scale
Tenacity:
Brittle
Fracture:
Sub-Conchoidal
Density:
4.86 g/cm3 (Measured)    5.32 g/cm3 (Calculated)

Optical Data of MackayiteHide

Type:
Uniaxial (+)
RI values:
nω = 2.190(2) nε = 2.210(2)
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
Pleochroism:
Visible
Comments:
Dichroic:
O = Green
E = Yellowish green

Chemical Properties of MackayiteHide

Formula:
Fe3+(Te4+2O5)(OH)
IMA Formula:
Fe3+Te4+2O5(OH)

Crystallography of MackayiteHide

Crystal System:
Tetragonal
Class (H-M):
4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:
I41/acd
Cell Parameters:
a = 11.704 Å, c = 14.895 Å
Ratio:
a:c = 1 : 1.273
Unit Cell V:
2,040.37 ų (Calculated from Unit Cell)
Z:
16
Morphology:
Short prismatic [001] to pyramidal {112}; pseudocubic, pseudododecahedral.

Type Occurrence of MackayiteHide

Place of Conservation of Type Material:
Harvard University, Boston Massachusetts 97444, 97950
Associated Minerals at Type Locality:

Other Language Names for MackayiteHide

German:Mackayit
Spanish:Mackayita

Common AssociatesHide

Associated Minerals Based on Photo Data:
8 photos of Mackayite associated with EmmonsiteFe3+2(TeO3)3 · 2H2O
3 photos of Mackayite associated with BlakeiteFe3+2[TeO3]3 (?)
2 photos of Mackayite associated with JarositeKFe3+3(SO4)2(OH)6
1 photo of Mackayite associated with GoldAu
1 photo of Mackayite associated with ParatelluriteTeO2
1 photo of Mackayite associated with Cliffordite(UO2)Te4+3O7
1 photo of Mackayite associated with TelluriteTeO2
1 photo of Mackayite associated with TelluriumTe
1 photo of Mackayite associated with ChlorargyriteAgCl
1 photo of Mackayite associated with PoughiteFe3+2(TeO3)2(SO4)(H2O)2 · H2O

Related Minerals - Nickel-Strunz GroupingHide

4.JL.05RodalquilariteFe2(TeO2OH)3(TeO3)ClTric. 1 : P1
4.JL.15MroseiteCaTe4+(CO3)O2Orth. mmm (2/m 2/m 2/m) : Pbca
4.JL.20PingguiteBi6Te4+2O13Orth.
4.JL.25Tlapallite(Ca,Pb)3CaCu6[Te4+3Te6+O12]2(Te4+O3)2(SO4)2·3H2OTrig. 3 2 : P3 2 1
4.JL.30GirditeH2Pb3(Te4+O3)(Te6+O6)Mon. m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

28.3.1BalyakiniteCu(TeO3)Orth.
28.3.2RajiteCu(Te4+2O5)Mon. 2/m : P21/b
28.3.3GraemiteCu[TeO3] · H2OOrth. mmm (2/m 2/m 2/m) : Pmma
28.3.4TeineiteCu2+(Te4+O3) · 2H2OOrth. mmm (2/m 2/m 2/m)
28.3.5CesbroniteCu2+3Te6+O4(OH)4Orth. mmm (2/m 2/m 2/m) : Cmcm
28.3.6MroseiteCaTe4+(CO3)O2Orth. mmm (2/m 2/m 2/m) : Pbca
28.3.7QuetzalcoatliteZn6Cu3(TeO6)2(OH)6 · AgxPbyClx+2yTrig. 3m (3 2/m) : P3m1
28.3.8ZemanniteMg0.5ZnFe3+(Te4+O3)3 · 4.5H2OHex. 6/m : P63/m
28.3.9KinichiliteMg0.5Mn2+Fe3+(Te4+O3)3 · 4.5H2OHex. 6/m : P63/m
28.3.10Denningite(Mn2+,Ca,Zn)Te4+2O5Tet.
28.3.11SpiroffiteMn2+2Te4+3O8Mon. 2/m : B2/b
28.3.12WinstanleyiteTiTe4+3O8Iso. m3 (2/m 3) : Ia3
28.3.13FairbankitePb(TeO3)Tric.
28.3.14PlumbotelluritePb(TeO3)Orth.
28.3.15Choloalite(Cu,Sb)3(Pb,Ca)3(TeO3)6ClIso. 4 3 2 : P41 3 2
28.3.16SmirniteBi2Te4+O5Orth. mm2
28.3.17ChekhovichiteBi2Te4+4O11Mon. 2/m
28.3.18Cliffordite(UO2)Te4+3O7Iso. m3 (2/m 3) : Pa3
28.3.19Schmitterite(UO2)(TeO3)Orth.
28.3.20MoctezumitePb(UO2)(TeO3)2Mon.
28.3.21EmmonsiteFe3+2(TeO3)3 · 2H2OTric. 1 : P1
28.3.22BlakeiteFe3+2[TeO3]3 (?)
28.3.24PoughiteFe3+2(TeO3)2(SO4)(H2O)2 · H2OOrth.
28.3.25SonoraiteFe3+(TeO3)(OH) · H2OMon.
28.3.26RodalquilariteFe2(TeO2OH)3(TeO3)ClTric. 1 : P1
28.3.27EztlitePb2+2Fe3+3(Te4+ O3)3(SO4)O2ClMon. m : Bm
28.3.28KeystoneiteMg0.5Ni2+Fe3+(Te4+O3)3 · 4.5H2OHex.

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 MackayiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Frondel, C. & F.H. Pough (1944), Two new tellurites of iron: Mackayite and blakeite, with new data on emmonsite and "durdenite". American Mineralogist: 29: 211-225.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 642-643.
Pertlik, F. (1969): Hydrothermal Synthesis, Chemical Formula and Crystal Structure of Mackayite, Fe(OH)[Te2O5]. Tschermaks Mineralogische und Petrographische Mitteilungen 13, 219-232 (in German with English abstract).
American Mineralogist (1970): 55: 1072.
Universidad Nacional Autónoma de México, Instituto de Geología Boletin: 82, part 2: 25-35.
Neues Jahrbuch für Mineralogie, Monatshefte (1977): 145-153.
Frost, R.L., and Dickfos, M.J. (2009): Raman spectroscopic study of the tellurite minerals: Mackayite and quetzalcoatlite. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 72(2), 445-448.

Internet Links for MackayiteHide

Localities for MackayiteHide

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.
Chile
 
  • Coquimbo
    • Elqui Province
      • El Indio deposit
        • Tambo Mine
Handbook of Mineralogy - Anthony, Bideaux, Bladh, Nichols; Back, M.E., Grice, J.D., Gault, R.A., Criddle, A.J. & Mandarino, J.A. (1999): Walfordite, a new tellurite from the Wendy open pit, El Indio - Tambo mining property, Chile. Canadian Mineralogist 37, 1261-1268.
Finland
 
  • North Karelia
    • Joensuu
Lips, ALW (2006) A review of non-ferrous mineral deposits in Europe - Finalised initial database BRGM/RP -54957 - FR
Mexico
 
  • Sonora
    • Moctezuma Municipality
      • Moctezuma
Handbook of Mineralogy - Anthony, Bideaux, Bladh, Nichols
Panczner(1987):108-401.
No reference listed
Lapis 2001(1), 11-40
USA
 
  • Arizona
    • Cochise County
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 389-390; Bideaux, R.A., et al (1960), Some new occurrences of minerals of Arizona, AZ Geol. Soc. Digest: 3: 53-56.
        • Tombstone
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 212, 281; Bideaux, R.A., et al (1960), Some new occurrences of minerals of Arizona, AZ Geol. Soc. Digest: 3: 53-56.
  • Colorado
    • Saguache Co.
      • Bonanza Mining District (Kerber Creek Mining District; Blake Mining District)
Minerals of Colorado (1997) E.B. Eckel
  • Nevada
    • Esmeralda Co.
      • Goldfield Mining District
        • Goldfield
NBMG Spec. Pub. 31 Minerals of Nevada
NBMG Spec. Pub. 31 Minerals of Nevada
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 642; Rocks & Minerals, Nov. 1999
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 642; NBMG Spec. Pub. 31 Minerals of Nevada.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 642.
  • New Mexico
    • Catron Co.
      • Wilcox Mining District
        • Lone Pine Hill area
Northrop, Minerals of New Mexico, 3rd Rev. Ed., 1996
 
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