[Mineral Galleries] [About Me] [e-Bay Items] [Latest News] [How to Order] A Diverse Selection of Beautifully Unique Gem & Mineral Specimens Desert Winds Gems & Minerals • For All Levels of Collectors Worldwide Aesthetic & Rare Mineral Specimens • Regular Updates General Kimrobinsonite InformationTa(OH)3(O,CO3) |
Molecular Weight = 258.97 gm |
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Tantalum 69.87 % Ta 85.32 % Ta2O5 |
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Hydrogen 1.17 % H 10.43 % H2O |
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Carbon 1.16 % C 4.25 % CO2 |
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Oxygen 27.80 % O |
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100.00 % 100.00 % = TOTAL OXIDE |
Ta(OH)3O0.75(CO3)0.25 |
Deeply weathered granite. |
Approved IMA 1985 |
Mt. Holland, Western Australia. Link to MinDat.org Location Data. |
Named for Kim Robertson, (1951-), Autralian geologist of Perth, Western Autralia, who found the first specimen. |
Kimrobinsonite + Pronunciation |
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| | Kimrobinsonite Crystallographya = 3.812, Z = 1; V = 55.39 Den(Calc)= 7.76 |
IsometricSpace Group: Unk |
By Intensity(I/Io): 3.808(1), 2.696(0.7), 1.907(0.3), |
| Physical Properties of KimrobinsoniteLemon white. |
Translucent |
Cryptocrystalline - Occurs as crystals too small to distinguish with the naked eye. |
Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite). |
Friable - Loosley cohesive material that granulates with your fingers. |
2.5 - Finger Nail |
Earthy (Dull) |
white |
| Optical Properties of Kimrobinsonite CI calc= 0.085 (Poor) - where the CI = (1-KPDcalc/KC) |
KPDcalc= 0.1585,KC= 0.1733 Ncalc = 2.34 Isotropic, n=2.23. |
| Calculated Properties of KimrobinsoniteBulk Density (Electron Density)=6.80 gm/cc |
note: Specific Gravity of Kimrobinsonite =7.76 gm/cc. Fermion Index = 0.0003465871 |
Boson Index = 0.9996534129 PEKimrobinsonite = 820.93 barns/electron |
U=PEKimrobinsonite x rElectron Density=5,583.94 barns/cc. GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Kimrobinsonite is Not Radioactive | Kimrobinsonite Classification06.04.08.01 (06)Hydroxides and Oxides Containing Hydroxyl |
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(06.04)containing multiple cations |
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(06.04.08)Dana Group |
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04.FG.15 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate |
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04.F - Hydroxides (without V or U) |
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04.FG -Hydroxides with OH, without H2O; unclassified |
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| Other Kimrobinsonite InformationNAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
Links to other databases for Kimrobinsonite : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - Google Images 6 - Google Scholar 7 - Handbook of Mineralogy (MinSocAm) 8 - Handbook of Mineralogy (UofA) 9 - MinDAT 10 - MinMax(Deutsch) 11 - MinMax(English) 12 - Mineralienatlas (Deutsch) 13 - QUT Mineral Atlas 14 - Ruff.Info Search for Kimrobinsonite using: Visit our Advertisers for Kimrobinsonite : AA Mineral SpecimensB & L Fine Minerals Crystalarium.com Dan Weinrich Fine Minerals Dan Weinrich Auctions Dakota Matrix Desert Winds Gems and Minerals Excalibur Minerals Exceptional Minerals Fabre Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club Wrights Rock Shop Translate Kimrobinsonite Mineral Data : Ask about Kimrobinsonite here : Print or Cut-and-Paste your Kimrobinsonite Specimen Label here :
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