| |
 |
Nickeltalmessite Mineral Data
|
|
|
General Nickeltalmessite Information
|
 Chemical Formula: |
Ca2Ni(AsO4)2•2H2O |
| Composition: |
Molecular Weight = 452.71 gm |
| |
Calcium 17.71 % Ca 24.77 % CaO |
| |
Nickel 12.96 % Ni 16.50 % NiO |
| |
Arsenic 33.10 % As 50.77 % As2O5 |
| |
Hydrogen 0.89 % H 7.96 % H2O |
| |
Oxygen 35.34 % O |
| |
______ ______ |
| |
100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Ca2Ni(AsO4)2•2(H2O) |
| Environment: |
Fairfieldite group |
| IMA Status: |
Proposed IMA 2008 (Dana # Added) |
| Locality: |
A�t Ahmane mine, Bou Azzer district, Anti-Atlas, Morocco Link to MinDat.org Location Data. |
| Name Origin: |
Commission on New Minerals, Nomenclature and Classification (CNMNC) |
| Synonym: |
IMA2008-051 |
| |
Nickeltalmessite Crystallography
|
| Axial Ratios: |
a:b:c =0.8271:1:0.786 |
| Cell Dimensions: |
a = 5.858, b = 7.082, c = 5.567, Z = 1; alpha = 97.2°, beta = 109.11°, gamma = 109.78° V = 203.73 Den(Calc)= 3.69 |
| Crystal System: |
Triclinic - Pedial H-M Symbol (1) Space Group: P |
| X Ray Diffraction: |
By Intensity(I/Io): 3.202(1), 2.772(0.68), 3.099(0.64),2.813(0.6), 3.358(0.58), 3.57(0.43), 1.714(0.39), 5.05(0.27), |
| |
Optical Properties of Nickeltalmessite
|
| Optical Data: |
NCalc= 1.72 - from Gladstone-Dale relationship (KC = 0.1904) where Ncalc=Dcalc*KC+1
|
| |
Calculated Properties of Nickeltalmessite
|
| Electron Density: |
Bulk Density (Electron Density)=3.66 gm/cc
note: Specific Gravity of Nickeltalmessite =3.80 gm/cc.
|
| Fermion Index: |
Fermion Index = 0.0018749314
Boson Index = 0.9981250686 |
| Photoelectric: |
PENickeltalmessite = 29.75 barns/electron
U=PENickeltalmessite x rElectron Density= 108.87 barns/cc.
|
| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Nickeltalmessite is Not Radioactive |
| |
Nickeltalmessite Classification
|
| Dana Class: |
40.02.02.10 (40)Hydrated Phosphates, etc |
| |
(40.02)where A++ (B++)2 (XO4) � x(H2O) |
| |
(40.02.02)Fairfieldite Subgroup (Triclinic: P-1�) |
| |
40.02.02.01 Fairfieldite Ca2(Mn,Fe)(PO4)2•2(H2O) P1 1 |
| |
40.02.02.02 Messelite Ca2(Fe,Mn)(PO4)2•2(H2O) P1 1 |
| |
40.02.02.03 Collinsite Ca2(Mg,Fe)(PO4)2•2(H2O) P1 1 |
| |
40.02.02.04 Cassidyite Ca2(Ni,Mg)(PO4)2•2(H2O) P1 1 |
| |
40.02.02.05 Talmessite Ca2Mg(AsO4)2•2(H2O) P1 1 |
| |
40.02.02.06 Gaitite Ca2Zn(AsO4)2•2(H2O) P1 1 |
| |
40.02.02.07 Roselite-beta Ca2(Co,Mg)(AsO4)2•2(H2O) P 1 or P1 Tri |
| |
40.02.02.08 Parabrandtite Ca2Mn(AsO4)•2(H2O) P1,P 1 Tri |
| |
40.02.02.09 Hillite! Ca2(Zn,Mg)[PO4]2•2(H2O) P1 1 |
| |
40.02.02.10 Nickeltalmessite! Ca2Ni(AsO4)2•2H2O P 1 |
| Strunz Class: |
08.CG.35 08 - PHOSPHATES, ARSENATES, VANADATES |
| |
08.C - Phosphates without Additional Anions, with H2O |
| |
08.CG -With large and medium-sized cations, RO4:H2O = 1:1 |
| |
08.CG.35 Nickeltalmessite! Ca2Ni(AsO4)2•2H2O P 1 |
| |
Other Nickeltalmessite Information
|
| See Also: |
Links to other databases for Nickeltalmessite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info
Search for Nickeltalmessite using:
[AOL]
[Bing]
[Dog Pile]
[GeoScienceWorld]
[HotBot]
[Ixquick]
[Lycos]
[MAMMA]
[Scirus]
[Teoma]
[WebCrawler]
[Wikipedia]
[YAHOO]
Visit our Advertisers for Nickeltalmessite :
Ask about Nickeltalmessite 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 Nickeltalmessite Specimen Label here :
|
Nickeltalmessite
Ca2Ni(AsO4)2•2H2O
Dana No: 40.02.02.10 Strunz No: 08.CG.35
Locality:
Notes:
|
|
| |
| |
|
| |
Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.