|
|
Tetrarooseveltite Mineral Data
|
|
|
General Tetrarooseveltite Information
|
Chemical Formula: |
BiAsO4 |
Composition: |
Molecular Weight = 347.90 gm |
|
Bismuth 60.07 % Bi 66.97 % Bi2O3 |
|
Arsenic 21.54 % As 33.03 % As2O5 |
|
Oxygen 18.40 % O |
|
______ ______ |
|
100.00 % 100.00 % = TOTAL OXIDE |
Empirical Formula: |
Bi(AsO4) |
Environment: |
Oxidation product found on fluorite-barite gange. |
IMA Status: |
Approved IMA 1994 |
Locality: |
Josef mine, Moldava deposit, Krune Hory Mountains, norhtwestern Bohemia, Czech Republic. Link to MinDat.org Location Data. |
Name Origin: |
Named as the tetragonal analog of rooseveltite. |
Name Pronunciation: |
Tetrarooseveltite + Pronunciation |
Synonym: |
IMA1993-006 |
|
Tetrarooseveltite Image |
Images:
|
|
Tetrarooseveltite
Comments: Light-yellow, earthy tetrarooseveltite.
Location: Moldava, Teplice (Teplitz), Krusné Hory (Erzgebirge), Severoceský Kraj, Bohemia, Czech Republic.
Scale: Picture size 4.5 mm.
© Thomas Witzke / Abraxas-Verlag |
|
Tetrarooseveltite Crystallography
|
Axial Ratios: |
a:c = 1:2.29891 |
Cell Dimensions: |
a = 5.085, c = 11.69, Z = 4; V = 302.27 Den(Calc)= 7.64 |
Crystal System: |
Tetragonal - Dipyramidal H-M Symbol (4/m) Space Group: I 41/a |
X Ray Diffraction: |
By Intensity(I/Io): 3.066(1), 1.933(0.55), 2.546(0.12), |
|
Physical Properties of Tetrarooseveltite
|
Color: |
Yellowish white, White. |
Diaphaneity: |
Translucent |
Habit: |
Aggregates - Made of numerous individual crystals or clusters. |
Habit: |
Powdery - Forms a loose, poorly-coherent pulverulent mass. |
Hardness: |
2.5 - Finger Nail |
Luminescence: |
Non-fluorescent. |
Luster: |
Earthy (Dull) |
Streak: |
white |
|
Optical Properties of Tetrarooseveltite
|
Gladstone-Dale: |
CI calc= -0.007 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1571,KC= 0.156 Ncalc = 2.19 |
Optical Data: |
Uniaxial (+), w=2.2, e=2.2, bire=0.0000. |
|
Calculated Properties of Tetrarooseveltite
|
Electron Density: |
Bulk Density (Electron Density)=6.50 gm/cc note: Specific Gravity of Tetrarooseveltite =7.64 gm/cc. |
Fermion Index: |
Fermion Index = 0.0000888987 Boson Index = 0.9999111013 |
Photoelectric: |
PETetrarooseveltite =1,152.58 barns/electron U=PETetrarooseveltite x rElectron Density=7,492.05 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Tetrarooseveltite is Not Radioactive |
|
Tetrarooseveltite Classification
|
Dana Class: |
38.04.05.01 (38)Anhydrous Phosphates, etc |
|
(38.04)A+ XO4 |
|
(38.04.05)Dana Group |
|
38.04.05.01 Tetrarooseveltite BiAsO4 I 41/a 4/m |
Strunz Class: |
08.AD.55 08 - PHOSPHATES, ARSENATES, VANADATES |
|
08.A - Phosphates, etc. without additional anions, without H2O |
|
08.AD -With only large cations |
|
08.AD.55 Tetrarooseveltite BiAsO4 I 41/a 4/m |
|
Other Tetrarooseveltite Information
|
References: |
NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.79,p1211,1994) OPTIC PROP.(Am.Min.,Vol.79,p1211,1994) |
See Also: |
Links to other databases for Tetrarooseveltite :
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 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info
Search for Tetrarooseveltite using:
[AOL]
[Bing]
[Dog Pile]
[GeoScienceWorld]
[HotBot]
[Ixquick]
[Lycos]
[MAMMA]
[Scirus]
[Teoma]
[WebCrawler]
[Wikipedia]
[YAHOO]
Visit our Advertisers for Tetrarooseveltite :
Ask about Tetrarooseveltite 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
Espa�ol
Print or Cut-and-Paste your Tetrarooseveltite Specimen Label here :
Tetrarooseveltite
BiAsO4
Dana No: 38.04.05.01 Strunz No: 08.AD.55
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.