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Willyamite Mineral Data
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General Willyamite Information
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 Chemical Formula: |
(Co,Ni)SbS |
| Composition: |
Molecular Weight = 212.69 gm |
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Cobalt 20.78 % Co |
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Nickel 6.90 % Ni |
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Antimony 57.24 % Sb |
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Sulfur 15.08 % S |
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______ |
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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. |
| Name Pronunciation: |
Willyamite + Pronunciation  |
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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 - Tetartoidal H-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), |
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Physical Properties of Willyamite
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| Cleavage: |
{001} Perfect |
| Color: |
Steel gray, Silver white. |
| Density: |
6.76 |
| Diaphaneity: |
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 |
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Calculated Properties of Willyamite
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| Electron Density: |
Bulk Density (Electron Density)=6.22 gm/cc
note: Specific Gravity of Willyamite =7.02 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0019102793
Boson Index = 0.9980897207 |
| Photoelectric: |
PEWillyamite = 201.45 barns/electron
U=PEWillyamite x rElectron Density=1,253.33 barns/cc.
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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: |
02.12.03.04 (02)Sulfides - Including Selenides and Tellurides |
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(02.12)where Am Bn Xp, with (m+n):p=1:2 |
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(02.12.03)Cobaltite Group (Cubic or pseudocubic crystals) |
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02.12.03.01 Cobaltite CoAsS P ca21 mm2 |
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02.12.03.02 Gersdorffite NiAsS P 213 2 3 |
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02.12.03.03 Ullmannite NiSbS P 213 2 3 |
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02.12.03.04 Willyamite (Co,Ni)SbS P 213 2 3 |
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02.12.03.05 Tolovkite IrSbS P 213 2 3 |
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02.12.03.06 Platarsite (Pt,Rh,Ru)AsS P a3 2/m 3 |
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02.12.03.07 Irarsite (Ir,Ru,Rh,Pt)AsS P a3 2/m 3 |
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02.12.03.08 Hollingworthite (Rh,Pt,Pd)AsS P a3 2/m 3 |
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02.12.03.09 Jolliffeite (Ni,Co)AsSe P a3 2/m 3 |
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02.12.03.10 Padmaite PdBiSe P 213 2 3 |
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02.12.03.11 Michenerite (Pd,Pt)BiTe P 213 2 3 |
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02.12.03.12 Maslovite PtBiTe P 213 2 3 |
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02.12.03.13 Testibiopalladite PdTe(Sb,Te) P 213 2 3 |
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02.12.03.14 Changchengite! IrBiS P 213 2 3 |
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02.12.03.15 Milotaite! PdSbSe P 21/3 2 3 |
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02.12.03.16 Kalungaite! PdAsSe Pa3 2/m 3 |
| Strunz Class: |
02.EB.25 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.E - Metal Sulfides, M:S � 1:2 |
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02.EB -M:S = 1:2, with Fe, Co, Ni, PGE, etc. |
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02.EB.25 Cobaltite CoAsS P ca21 mm2 |
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02.EB.25 Changchengite! IrBiS P 213 2 3 |
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02.EB.25 Hollingworthite (Rh,Pt,Pd)AsS P a3 2/m 3 |
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02.EB.25 Gersdorffite NiAsS P 213 2 3 |
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02.EB.25 Irarsite (Ir,Ru,Rh,Pt)AsS P a3 2/m 3 |
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02.EB.25 Jolliffeite (Ni,Co)AsSe P a3 2/m 3 |
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02.EB.25 Krutovite NiAs2 P a3 2/m 3 |
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02.EB.25 Michenerite (Pd,Pt)BiTe P 213 2 3 |
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02.EB.25 Maslovite PtBiTe P 213 2 3 |
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02.EB.25 Mayingite IrBiTe P a3 2/m 3 |
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02.EB.25 Padmaite PdBiSe P 213 2 3 |
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02.EB.25 Platarsite (Pt,Rh,Ru)AsS P a3 2/m 3 |
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02.EB.25 Ullmannite NiSbS P 213 2 3 |
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02.EB.25 Tolovkite IrSbS P 213 2 3 |
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02.EB.25 Testibiopalladite PdTe(Sb,Te) P 213 2 3 |
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02.EB.25 Willyamite (Co,Ni)SbS P 213 2 3 |
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02.EB.25 Kalungaite! PdAsSe Pa3 2/m 3 |
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02.EB.25 Milotaite! PdSbSe P 21/3 2 3 |
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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 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST
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Print or Cut-and-Paste your Willyamite Specimen Label here :
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Willyamite
(Co,Ni)SbS
Dana No: 02.12.03.04 Strunz No: 02.EB.25
Locality:
Notes:
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