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Bokite Mineral Data + |
General Bokite Information |
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| (Al,Fe+++)1.3(V++++,Fe)8O20·4.7(H2O) | |||
| Molecular Weight = 858.38 gm | |||
| Aluminum 3.14 % Al 5.94 % Al2O3 | |||
| Vanadium 44.51 % V 79.46 % V2O5 | |||
| Iron 5.20 % Fe 7.44 % Fe2O3 | |||
| Hydrogen 1.10 % H 9.86 % H2O | |||
| Oxygen 46.04 % O | |||
| ______ ______ | |||
| 100.00 % 102.70 % = TOTAL OXIDE | |||
| AlFe3+0.3V5+7.5Fe3+0.5O20·4.7(H2O) | |||
| Approved IMA 1963 | |||
| Kurumsak area, Kazakhstan. Link to MinDat.org Location Data. | |||
| Named for Ivan I. Bok, (1898-), Kazakh mineralogist. | |||
Bokite Image | |||
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Bokite Crystallography |
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| a:b:c =3.2495:1:3.0584 | |||
| a = 11.838, b = 3.643, c = 11.142, Z = 1; beta = 110.58° V = 449.84 Den(Calc)= 3.17 | |||
| Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m | |||
| By Intensity(I/Io): 10.47(1), 3.452(0.3), 2.907(0.12), | |||
Physical Properties of Bokite |
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| [???] Perfect | |||
| Black. | |||
| 2.97 - 3.1, Average = 3.03 | |||
| Opaque | |||
| Encrustations - Forms crust-like aggregates on matrix. | |||
| Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite) | |||
| Reniform - "Kidney like" in shape (e.g.. hematite). | |||
| 3 - Calcite | |||
| Metallic - Dull | |||
| brownish black | |||
Optical Properties of Bokite |
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| CI meas= -0.005 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.038 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.3265,KPDmeas= 0.341,KC= 0.3394 |
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| Biaxial (?), a=2.01, g=2.06, bire=0.0500 | |||
| dirty olive green. | |||
| deep red brown. | |||
| deep red brown. | |||
Calculated Properties of Bokite |
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relectron=2.92 gm/cc |
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| Fermion Index = 0.00243 Boson Index = 0.99757 |
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PEBokite = 10.19 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Bokite is Not Radioactive |
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Bokite Classification |
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| 47.3.2.5 (47)Vanadium Oxysalts | |||
| (47.3)(Hydrated) | |||
| (47.3.2)Dana Group | |||
| IV/G.11-20 IV - Oxides | |||
| IV/G - Vanadiumoxides (with V4+/5+) Layered vanadates. Typical Vanadiumbronzes | |||
| IV/G.11 - Bariandite - Corvusite-? series | |||
Other Bokite Information |
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| NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8) | |||
| Links to other databases for Bokite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris Search for Bokite using: Visit our Advertisers for Bokite : Translate Bokite Mineral Data : Ask about Bokite here : Print or Cut-and-Paste your Bokite Specimen Label here :
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