[Newest Minerals] [Minerals for Sale] [Educational Articles] [About Us] [Image Gallery] John Betts - Fine Minerals Classic minerals, out-of-print books & magazines, plus informative articles for collectors General Namibite InformationCu++Bi2(VO4)O2 |
Molecular Weight = 628.44 gm |
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Vanadium 8.11 % V 14.47 % V2O5 |
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Copper 10.11 % Cu 12.66 % CuO |
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Bismuth 66.51 % Bi 74.14 % Bi2O3 |
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Oxygen 15.28 % O |
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______ ______ |
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100.00 % 101.27 % = TOTAL OXIDE |
CuBi2(VO4)O2 |
Approved IMA 1981 |
Khorixas (formerly Welwitschia), northwestern Namibia. Link to MinDat.org Location Data. |
Named for the country in which it is found. |
Namibite |
ICSD 89724 |
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PDF 47-1773 |
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Namibite Crystallographya:b:c =3.2099:1:2.0073 |
a = 11.864, b = 3.696, c = 7.419, Z = 2; beta = 109.7° V = 306.28 Den(Calc)= 6.81 |
MonoclinicSpace Group: C 2/m,Cm,C 2 |
By Intensity(I/Io): 3.018(1), 3.574(0.75), 5.58(0.7), |
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Mouse
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| Physical Properties of Namibite{100} Good |
Dark green. |
6.86 |
Translucent |
Platy - Sheet forms (e.g. micas). |
4.5-5 - Near Apatite |
pistachio green |
| Optical Properties of NamibiteCI meas= 0.129 (Poor) - where the CI = (1-KPDmeas/KC) |
CI calc= 0.123 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1615,KPDmeas= 0.1603,KC= 0.1842 Ncalc = 2.25 - 2.26 Biaxial (-), a=2.1, 2V(Meas)=moderate. |
yellow green. |
pistachio green. |
dark green. |
| Calculated Properties of NamibiteBulk Density (Electron Density)=5.76 gm/cc |
note: Specific Gravity of Namibite =6.81 gm/cc. Fermion Index = 0.0002766353 |
Boson Index = 0.9997233647 PENamibite =1,271.11 barns/electron |
U=PENamibite x rElectron Density=7,327.83 barns/cc. GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Namibite is Not Radioactive | Namibite Classification38.05.09.01 (38)Anhydrous Phosphates, etc |
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(38.05)with miscellaneous formulae |
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(38.05.09)Dana Group |
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08.BB.50 08 - PHOSPHATES, ARSENATES, VANADATES |
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08.B - Phosphates, etc. with Additional Anions, without H2O |
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08.BB -With only medium-sized cations, (OH, etc.):RO4 £ 1:1 |
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| Other Namibite InformationNAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8) |
Links to other databases for Namibite : |
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 Namibite using: Visit our Advertisers for Namibite : 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 Namibite Mineral Data : Ask about Namibite here : Print or Cut-and-Paste your Namibite Specimen Label here :
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