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Jolliffeite Mineral Data
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General Jolliffeite Information
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 Chemical Formula: |
(Ni,Co)AsSe |
| Composition: |
Molecular Weight = 212.63 gm |
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Cobalt 6.93 % Co |
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Nickel 20.70 % Ni |
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Arsenic 35.24 % As |
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Selenium 37.13 % Se |
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______ |
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100.00 % |
| Empirical Formula: |
Ni0.75Co0.25AsSe |
| Environment: |
Se analogue of gersdorffite. |
| IMA Status: |
Approved IMA 1991 |
| Locality: |
Shirley Penin., Lake Athabasca, SK, Canada. Link to MinDat.org Location Data. |
| Name Origin: |
Named in 1991 for Alfred W. Jolliffe (1907-1988), Canadian geologist. |
| Name Pronunciation: |
Jolliffeite + Pronunciation  |
| Synonym: |
ICSD 40656 |
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IMA1989-011 |
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PDF 45-1383 |
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Jolliffeite Image |
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Images:
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Jolliffeite Eskebornite
Comments: Back-scattered electron image of jolliffeite in sulfurian eskebornite. Note the cracked appearance and the different brightness of eskebornite, which is a reflection of variable ratio of selenium to sulfur. (CanMin v 42, p 844).
Location: Niederschlema-Alberoda uranium deposit, in the Erzgebirge region of Germany.
Scale: See Image.
© Canadian Mineralogist |
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Jolliffeite Crystallography
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| Cell Dimensions: |
a = 5.831, Z = 4; V = 198.26 Den(Calc)= 7.12 |
| Crystal System: |
Isometric - Diploidal H-M Symbol (2/m 3) Space Group: P a3 |
| X Ray Diffraction: |
By Intensity(I/Io): 2.602(1), 1.757(0.8), 2.378(0.8), |
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Physical Properties of Jolliffeite
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| Color: |
Tin white. |
| Density: |
7.1 |
| Diaphaneity: |
Opaque |
| Habit: |
Anhedral Grains - Granular minerals without the expression of crystal shapes |
| Hardness: |
6-6.5 - Orthoclase-Pyrite |
| Luster: |
Metallic |
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Calculated Properties of Jolliffeite
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| Electron Density: |
Bulk Density (Electron Density)=6.35 gm/cc
note: Specific Gravity of Jolliffeite =7.12 gm/cc.
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| Fermion Index: |
Fermion Index = 0.03
Boson Index = 0.97 |
| Photoelectric: |
PEJolliffeite = 66.27 barns/electron
U=PEJolliffeite x rElectron Density= 420.48 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Jolliffeite is Not Radioactive |
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Jolliffeite Classification
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| Dana Class: |
02.12.03.09 (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 Jolliffeite Information
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| References: |
NAME( Dana8) PHYS. PROP.(37th List of New Min.,Min. Mag.,1996) |
| See Also: |
Links to other databases for Jolliffeite :
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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Jolliffeite
(Ni,Co)AsSe
Dana No: 02.12.03.09 Strunz No: 02.EB.25
Locality:
Notes:
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