Willyamite Mineral Data + 
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- 2.12.3.1 Cobaltite CoAsS P ca21 mm2
- 2.12.3.2 Gersdorffite NiAsS P 213 2 3
- 2.12.3.3 Ullmannite NiSbS P 213 2 3
- 2.12.3.4 Willyamite (Co,Ni)SbS P 213 2 3
- 2.12.3.5 Tolovkite IrSbS P 213 2 3
- 2.12.3.6 Platarsite (Pt,Rh,Ru)AsS P a3 2/m 3
- 2.12.3.7 Irarsite (Ir,Ru,Rh,Pt)AsS P a3 2/m 3
- 2.12.3.8 Hollingworthite (Rh,Pt,Pd)AsS P a3 2/m 3
- 2.12.3.9 Jolliffeite (Ni,Co)AsSe P a3 2/m 3
- 2.12.3.10 Padmaite PdBiSe P 213 2 3
- 2.12.3.11 Michenerite (Pd,Pt)BiTe P 213 2 3
- 2.12.3.12 Maslovite PtBiTe P 213 2 3
- 2.12.3.13 Testibiopalladite PdTe(Sb,Te) P 213 2 3
- 2.12.3.14 Changchengite! IrBiS P 213 2 3
- 2.12.3.15 Milotaite! PdSbSe P 21/3 2 3
- 2.12.3.16 IMA2004-047! PdAsSe Pa3 4/m 2/m 2/m
- II/D.18-10 Cobaltite CoAsS P ca21 mm2
- II/D.18-20 Gersdorffite NiAsS P 213 2 3
- II/D.18-25 Jolliffeite (Ni,Co)AsSe P a3 2/m 3
- II/D.18-30 Willyamite (Co,Ni)SbS P 213 2 3
- II/D.18-40 Ullmannite NiSbS P 213 2 3
- II/D.18-50 Hollingworthite (Rh,Pt,Pd)AsS P a3 2/m 3
- II/D.18-60 Irarsite (Ir,Ru,Rh,Pt)AsS P a3 2/m 3
- II/D.18-70 Platarsite (Pt,Rh,Ru)AsS P a3 2/m 3
- II/D.18-80 Tolovkite IrSbS P 213 2 3
General Willyamite Information |
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 Chemical Formula: |
(Co,Ni)SbS | ||
| Composition: |
Molecular Weight = 212.69 gm | ||
| Cobalt 20.78 % Co | |||
| Nickel 6.90 % Ni | |||
| Antimony 57.24 % Sb | |||
| Sulfur 15.08 % S | |||
| ______ | |||
| 100.00 % | |||
| Empirical Formula: |
Co0.75Ni0.25SbS | ||
| Environment: |
In calcite-siderite veins. Forms a series with ullmannite. | ||
| IMA Status: |
Valid Species (Pre-IMA) 1896 | ||
| Locality: |
A.B.H. Consols mine, Broken Hill, Willyama Township, New South Wales, Australia. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for the locality. | ||
Willyamite Image | |||
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Images:
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Willyamite Crystallography |
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| Cell Dimensions: |
a = 5.86, Z = 4; V = 201.23 Den(Calc)= 7.02 | ||
| Crystal System: |
Isometric - TetartoidalH-M Symbol (2 3) Space Group: P 213 | ||
| X Ray Diffraction: |
By Intensity(I/Io): 2.621(1), 2.39(0.7), 1.767(0.6), | ||
Physical Properties of Willyamite |
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| Cleavage: |
[001] Perfect | ||
| Color: |
Steel gray, Silver white. | ||
| Density: |
6.76 | ||
| Diaphaniety: |
Opaque | ||
| Fracture: |
Brittle - Uneven - Very brittle fracture producing uneven fragments. | ||
| Habit: |
Pseudo Cubic - Crystals show a cubic outline. | ||
| Hardness: |
5.5 - Knife Blade | ||
| Luster: |
Metallic | ||
| Streak: |
grayish black | ||
Calculated Properties of Willyamite |
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| Electron Density: |
relectron=6.22 gm/cc |
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| Fermion Index |
Fermion Index = 0.00191 Boson Index = 0.99809 |
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| Photoelectric: |
PEWillyamite = 201.45 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Willyamite is Not Radioactive |
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Willyamite Classification |
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| Dana Class: |
2.12.3.4 (2)Sulfides - Including Selenides and Tellurides | ||
| (2.12)where Am Bn Xp, with (m+n):p=1:2 | |||
| (2.12.3)Cobaltite Group (Cubic or pseudocubic crystals) | |||
| Strunz Class: |
II/D.18-30 II - Sulfides and sulphosalts | ||
| II/D - Sulfides with metal: sulfur, selenium and tellurium < 1:1, Tellurides with Copper, Silver, Gold | |||
| II/D.18 - Cobaltite group, Cobaltite - Ullmannite - Tolovkite series | |||
Other Willyamite Information |
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| References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) | ||
| See Also: |
Links to other databases for Willyamite : 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 - WWW-MINCRYST 14 -École des Mines de Paris Search for Willyamite using: Visit our Advertisers for Willyamite : AA Mineral SpecimensB & L Fine Minerals Crystal Vaults Dan Weinrich Fine Minerals Dan Weinrich Auctions e-Rocks Auctions Excalibur Minerals Exceptional Minerals Fabre Minerals Greenside Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club MineralsWeb Fine Minerals Rockshop.cz T G Fine Minerals Wrights Rock Shop Translate Willyamite Mineral Data : Ask about Willyamite here : Print or Cut-and-Paste your Willyamite Specimen Label here :
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