| Cuprotungstite Mineral Data |
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- 48.3.2.1 Cuprotungstite Cu3(WO4)2(OH)2 Unk Tetra
- VI/G.02-05 Biehlite! (Sb,As)2MoO6 C 2/c 2/m
- VI/G.02-10 Lindgrenite Cu3(MoO4)2(OH)2 P 21/n 2/m
- VI/G.02-15 Szenicsite Cu3MoO4(OH)4 Pnnm, Pnn2 Ortho
- VI/G.02-20 Cuprotungstite Cu3(WO4)2(OH)2 Unk Tetra
- VI/G.02-25 Vergasovaite! Cu3O[(Mo,S)O4][SO4] P nma 2/m 2/m 2/m
- VI/G.02-30 Ferrimolybdite Fe2(MoO4)3·8(H2O) Unk Ortho
- VI/G.02-40 Phyllotungstite CaFe3H(WO4)6·10(H2O) P 222,Pmm2,P mmm Ortho
General Cuprotungstite Information |
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 Chemical Formula: |
Cu++3(WO4)2(OH)2 | ||
| Composition: |
Molecular Weight = 720.35 gm | ||
| Copper 26.46 % Cu 33.13 % CuO | |||
| Hydrogen 0.28 % H 2.50 % H2O | |||
| Tungsten 51.04 % W 64.37 % WO3 | |||
| Oxygen 22.21 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
Cu3(WO4)2(OH)2 | ||
| Environment: |
Common mineral in the oxidized zone of scheelite deposits containing primary copper sulfides. | ||
| IMA Status: |
Valid Species (Pre-IMA) 1869 | ||
| Locality: |
La Paz, Baja California Sur, Mexico. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for its composition. | ||
Cuprotungstite Image | |||
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Cuprotungstite Crystallography |
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| Axial Ratios: |
a:c = 1:1.6215 | ||
| Cell Dimensions: |
a = 8.93, c = 14.48, Z = 7; V = 1,154.71 Den(Calc)= 7.25 | ||
| Crystal System: |
TetragonalSpace Group: Unk | ||
| X Ray Diffraction: |
By Intensity(I/Io): 3.07(1), 1.24(0.9), 1.91(0.8), | ||
Physical Properties of Cuprotungstite |
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| Color: |
Brown green, Olive green, Yellowish green. | ||
| Density: |
7.06 | ||
| Fracture: |
Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments. | ||
| Habit: |
Crystalline - Fine - Occurs as well-formed fine sized crystals. | ||
| Habit: |
Massive - Fibrous - Distinctly fibrous fine-grained forms. | ||
| Hardness: |
4-5 - Fluorite-Apatite | ||
| Luminescence: |
None. | ||
| Luster: |
Vitreous - Waxy | ||
| Magnetism: |
Nonmagnetic | ||
| Streak: |
green | ||
Optical Properties of Cuprotungstite |
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| Dichroism (e): |
none. | ||
| Dichroism (w): |
none. | ||
| Gladstone-Dale: |
CI meas= 0.077 (Fair) - where the CI = (1-KPDmeas/KC) CI calc= 0.101 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1572,KPDmeas= 0.1615,KC= 0.1749 |
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| Optical Data: |
Uniaxial (-), e=2.1, w=2.18, bire=0.0800. | ||
Calculated Properties of Cuprotungstite |
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| Electron Density: |
relectron=6.21 gm/cc |
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| Fermion Index |
Fermion Index = 0.07299 Boson Index = 0.92701 |
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| Photoelectric: |
PECuprotungstite = 638.45 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Cuprotungstite is Not Radioactive |
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Cuprotungstite Classification |
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| Dana Class: |
48.3.2.1 (48)Anhydrous Molybdates and Tungstates | ||
| (48.3)(Basic Anhydrous) | |||
| (48.3.2)Dana Group | |||
| Strunz Class: |
VI/G.02-20 VI - Sulfates,Chromates,Molybdates and Tungstates | ||
| VI/G - Molybdates [MoO4]2- and wolframates [WO4]2- | |||
| VI/G.02 - Lindgrenite - Phyllotungstite series | |||
Other Cuprotungstite Information |
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| References: |
NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Ford32) | ||
| See Also: |
Links to other databases for Cuprotungstite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 -École des Mines de Paris Search for Cuprotungstite using: Visit our Advertisers for Cuprotungstite : Translate Cuprotungstite Mineral Data : Ask about Cuprotungstite here : Print or Cut-and-Paste your Cuprotungstite Specimen Label here :
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