Rooseveltite Mineral Data + 
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- 38.4.4.1 Rooseveltite BiAsO4 P 2/m 2/m
- VII/A.18-10 Gasparite-(Ce) CeAsO4 P 21/n 2/m
- VII/A.18-20 Rooseveltite BiAsO4 P 2/m 2/m
- VII/A.18-30 Tetrarooseveltite BiAsO4 I 41/a 4/m
- VII/A.18-40 Ximengite BiPO4 P 3121 3 2
General Rooseveltite Information |
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 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) | ||
| IMA Status: |
Valid Species (Pre-IMA) 1946 | ||
| Locality: |
Link to MinDat.org Location Data. | ||
| Synonym: |
ICSD 27199 | ||
| PDF 25-89 | |||
Rooseveltite Image | |||
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Images:
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Rooseveltite Crystallography |
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| Axial Ratios: |
a:b:c =0.9606:1:0.9399 | ||
| Cell Dimensions: |
a = 6.882, b = 7.164, c = 6.734, Z = 4; beta = 104.83° V = 320.94 Den(Calc)= 7.20 | ||
| Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2/m | ||
| X Ray Diffraction: |
By Intensity(I/Io): 3.15(1), 2.96(0.7), 4.82(0.4), | ||
Physical Properties of Rooseveltite |
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| Color: |
Gray, Gray white. | ||
| Density: |
6.86 | ||
| Diaphaniety: |
Translucent | ||
| Fracture: |
Brittle - Generally displayed by glasses and most non-metallic minerals. | ||
| Hardness: |
4-4.5 - Between Fluorite and Apatite | ||
| Luster: |
Adamantine | ||
| Streak: |
white | ||
Optical Properties of Rooseveltite |
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| Gladstone-Dale: |
CI meas= -0.081 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= -0.03 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1606,KPDmeas= 0.1686,KC= 0.156 |
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| Optical Data: |
Biaxial (+), a=2.14, b=2.15, g=2.18, bire=0.0400, 2V(Calc)=62, 2V(Meas)=50. | ||
Calculated Properties of Rooseveltite |
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| Electron Density: |
relectron=6.13 gm/cc |
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| Fermion Index |
Fermion Index = 0.00008 Boson Index = 0.99992 |
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| Photoelectric: |
PERooseveltite =1,152.58 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Rooseveltite is Not Radioactive |
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Rooseveltite Classification |
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| Dana Class: |
38.4.4.1 (38)Anhydrous Phosphates, etc | ||
| (38.4)A+ XO4 | |||
| (38.4.4)Dana Group | |||
| Strunz Class: |
VII/A.18-20 VII - Phosphates, Arsenates and Vanadates | ||
| VII/A - Waterfree phosphates [PO4]3- without unfamiliar anions, cations of very big size: Ca, Na and andre | |||
| VII/A.18 - Gasparite series | |||
Other Rooseveltite Information |
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| References: |
PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | ||
| See Also: |
Links to other databases for Rooseveltite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris Search for Rooseveltite using: Visit our Advertisers for Rooseveltite : Translate Rooseveltite Mineral Data : Ask about Rooseveltite here : Print or Cut-and-Paste your Rooseveltite Specimen Label here :
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