Kimrobinsonite Mineral Data + 
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- 6.4.8.1 Kimrobinsonite Ta(OH)3(O,CO3) Unk Cubic
- IV/F.19-10 Kimrobinsonite Ta(OH)3(O,CO3) Unk Cubic
General Kimrobinsonite Information |
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 Chemical Formula: |
Ta(OH)3(O,CO3) | ||
| Composition: |
Molecular Weight = 258.97 gm | ||
| Tantalum 69.87 % Ta 85.32 % Ta2O5 | |||
| Hydrogen 1.17 % H 10.43 % H2O | |||
| Carbon 1.16 % C 4.25 % CO2 | |||
| Oxygen 27.80 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
Ta(OH)3O0.75(CO3)0.25 | ||
| Environment: |
Deeply weathered granite. | ||
| IMA Status: |
Approved IMA 1985 | ||
| Locality: |
Mt. Holland, Western Australia. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for Kim Robertson, (1951-), Autralian geologist of Perth, Western Autralia, who found the first specimen. | ||
Search for Kimrobinsonite Images | |||
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Images:
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Kimrobinsonite Crystallography |
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| Cell Dimensions: |
a = 3.812, Z = 1; V = 55.39 Den(Calc)= 7.76 | ||
| Crystal System: |
IsometricSpace Group: Unk | ||
| X Ray Diffraction: |
By Intensity(I/Io): 3.808(1), 2.696(0.7), 1.907(0.3), | ||
Physical Properties of Kimrobinsonite |
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| Color: |
Lemon white. | ||
| Diaphaniety: |
Translucent | ||
| Habit: |
Cryptocrystalline - Occurs as crystals too small to distinguish with the naked eye. | ||
| Habit: |
Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite). | ||
| Habit: |
Friable - Loosley cohesive material that granulates with your fingers. | ||
| Hardness: |
2.5 - Finger Nail | ||
| Luster: |
Earthy (Dull) | ||
| Streak: |
white | ||
Optical Properties of Kimrobinsonite |
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| Gladstone-Dale: |
CI calc= 0.085 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1585,KC= 0.1733 |
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| Optical Data: |
Isotropic, n=2.23. | ||
Calculated Properties of Kimrobinsonite |
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| Electron Density: |
relectron=6.80 gm/cc |
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| Fermion Index |
Fermion Index = 0.00034 Boson Index = 0.99966 |
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| Photoelectric: |
PEKimrobinsonite = 820.93 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Kimrobinsonite is Not Radioactive |
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Kimrobinsonite Classification |
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| Dana Class: |
6.4.8.1 (6)Hydroxides and Oxides Containing Hydroxyl | ||
| (6.4)containing multiple cations | |||
| (6.4.8)Dana Group | |||
| Strunz Class: |
IV/F.19-10 IV - Oxides | ||
| IV/F - Hydroxides and oxidic hydrates, water-bearing oxides with layered structure | |||
| IV/F.19 - Stottite group, Kimrobinsonite series | |||
Other Kimrobinsonite Information |
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| References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | ||
| See Also: |
Links to other databases for Kimrobinsonite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 -École des Mines de Paris Search for Kimrobinsonite using: Visit our Advertisers for Kimrobinsonite : Translate Kimrobinsonite Mineral Data : Ask about Kimrobinsonite here : Print or Cut-and-Paste your Kimrobinsonite Specimen Label here :
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