Jolliffeite Mineral Data

General Jolliffeite Information

Chemical Formula:

(Ni,Co)AsSe

Composition:

Molecular Weight = 212.63 gm

Cobalt 6.93 % Co

Nickel 20.70 % Ni

Arsenic 35.24 % As

Selenium 37.13 % Se

______

100.00 %

Empirical Formula:

Ni_0.75Co_0.25AsSe

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

IMA1989-011

PDF 45-1383

Jolliffeite Image

Images:

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

Jolliffeite Crystallography

Cell Dimensions:

a = 5.831, Z = 4; V = 198.26 Den(Calc)= 7.12

Crystal System:

Isometric - DiploidalH-M Symbol (2/m 3) Space Group: P a3

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.602(1), 1.757(0.8), 2.378(0.8),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Foecker A J , Jeitschko W , Journal of Solid State Chemistry , 162 (2001) p.69-78, The atomic order of the pnictogen and chalcogen atoms in equiatomic ternary

Physical Properties of Jolliffeite

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

Calculated Properties of Jolliffeite

Electron Density:

Bulk Density (Electron Density)=6.35 gm/cc
note: Specific Gravity of Jolliffeite =7.12 gm/cc.

Fermion Index:

Fermion Index = 0.03
Boson Index = 0.97

Photoelectric:

PE_Jolliffeite= 66.27 barns/electron
U=PE_Jolliffeite x rElectron Density= 420.48 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Jolliffeite is Not Radioactive

Jolliffeite Classification

Dana Class:

02.12.03.09 (02)Sulfides - Including Selenides and Tellurides

(02.12)where Am Bn Xp, with (m+n):p=1:2

(02.12.03)Cobaltite Group (Cubic or pseudocubic crystals)

02.12.03.01 Cobaltite CoAsS P ca2₁ mm2

02.12.03.02 Gersdorffite NiAsS P 2₁3 2 3

02.12.03.03 Ullmannite NiSbS P 2₁3 2 3

02.12.03.04 Willyamite (Co,Ni)SbS P 2₁3 2 3

02.12.03.05 Tolovkite IrSbS P 2₁3 2 3

02.12.03.06 Platarsite (Pt,Rh,Ru)AsS P a3 2/m 3

02.12.03.07 Irarsite (Ir,Ru,Rh,Pt)AsS P a3 2/m 3

02.12.03.08 Hollingworthite (Rh,Pt,Pd)AsS P a3 2/m 3

02.12.03.09 Jolliffeite (Ni,Co)AsSe P a3 2/m 3

02.12.03.10 Padmaite PdBiSe P 2₁3 2 3

02.12.03.11 Michenerite (Pd,Pt)BiTe P 2₁3 2 3

02.12.03.12 Maslovite PtBiTe P 2₁3 2 3

02.12.03.13 Testibiopalladite PdTe(Sb,Te) P 2₁3 2 3

02.12.03.14 Changchengite! IrBiS P 2₁3 2 3

02.12.03.15 Milotaite! PdSbSe P 2₁/3 2 3

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

02.E - Metal Sulfides, M:S £ 1:2

02.EB -M:S = 1:2, with Fe, Co, Ni, PGE, etc.

02.EB.25 Cobaltite CoAsS P ca2₁ mm2

02.EB.25 Changchengite! IrBiS P 2₁3 2 3

02.EB.25 Hollingworthite (Rh,Pt,Pd)AsS P a3 2/m 3

02.EB.25 Gersdorffite NiAsS P 2₁3 2 3

02.EB.25 Irarsite (Ir,Ru,Rh,Pt)AsS P a3 2/m 3

02.EB.25 Jolliffeite (Ni,Co)AsSe P a3 2/m 3

02.EB.25 Krutovite NiAs2 P a3 2/m 3

02.EB.25 Michenerite (Pd,Pt)BiTe P 2₁3 2 3

02.EB.25 Maslovite PtBiTe P 2₁3 2 3

02.EB.25 Mayingite IrBiTe P a3 2/m 3

02.EB.25 Padmaite PdBiSe P 2₁3 2 3

02.EB.25 Platarsite (Pt,Rh,Ru)AsS P a3 2/m 3

02.EB.25 Ullmannite NiSbS P 2₁3 2 3

02.EB.25 Tolovkite IrSbS P 2₁3 2 3

02.EB.25 Testibiopalladite PdTe(Sb,Te) P 2₁3 2 3

02.EB.25 Willyamite (Co,Ni)SbS P 2₁3 2 3

02.EB.25 Kalungaite! PdAsSe Pa3 2/m 3

02.EB.25 Milotaite! PdSbSe P 2₁/3 2 3

Other Jolliffeite Information

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

Search for Jolliffeite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Jolliffeite :

A Bijoux Google Search for Jolliffeite
Adam's Minerals Google Search for Jolliffeite
Cape Minerals Google Search for Jolliffeite
Dakota Matrix Minerals Google Search for Jolliffeite
Excalibur Mineral Corp. Google Search for Jolliffeite
Exceptional Minerals Google Search for Jolliffeite
John Betts Fine Minerals Search for Jolliffeite
McDougall Minerals Google Search for Jolliffeite
Mineral News Website Link
Rock and Mineral Shows Google Search for Jolliffeite
Weinrich Minerals, Inc. Google Search for Jolliffeite

Ask about Jolliffeite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Jolliffeite Specimen Label here :

Jolliffeite

(Ni,Co)AsSe
Dana No: 02.12.03.09 Strunz No: 02.EB.25
Locality:

Notes: