[About Us] [Products] [Fluorescent Mineals] [Contact Us] UVTools is a supplier of affordable ultraviolet lamps and fluorescent minerals Our customers include mineral dealers, gift shops, and museums worldwide We provide an array of shortwave, midwave, and longwave lamps at the best price! General Schumacherite InformationBi3[(V,As,P)O4]2O(OH) |
Molecular Weight = 900.22 gm |
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Vanadium 6.79 % V 12.12 % V2O5 |
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Bismuth 69.64 % Bi 77.64 % Bi2O3 |
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Arsenic 4.99 % As 7.66 % As2O5 |
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Phosphorus 0.69 % P 1.58 % P2O5 |
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Hydrogen 0.11 % H 1.00 % H2O |
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Oxygen 17.77 % O |
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100.00 % 100.00 % = TOTAL OXIDE |
Bi3(VO4)1.2(AsO4)0.6(PO4)0.2O(OH) |
Probable series with preisingerite. |
Approved IMA 1983 |
Schneeberg, Germany Link to MinDat.org Location Data. |
Named for Friedrich Schumacher, professor, University of Freiberg and Bonn, Germany |
Schumacherite + Pronunciation |
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Schumacherite Crystallographya:b:c =1.3471:1:0.9249 |
a = 10.05, b = 7.46, c = 6.9, Z = 2; alpha = 87.7°, beta = 115.3°, gamma = 111.5° V = 434.80 Den(Calc)= 6.88 |
Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1 |
By Intensity(I/Io): 3.28(1), 3.09(0.8), 3.19(0.8), |
| Physical Properties of SchumacheriteNone |
Yellow, Yellow brown. |
6.9 |
Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz). |
Tabular - Form dimensions are thin in one direction. |
3 - Calcite |
Adamantine |
light yellow |
| Optical Properties of SchumacheriteCI meas= -0.038 (Excellent) - where the CI = (1-KPDmeas/KC) |
CI calc= -0.032 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1844,KPDmeas= 0.1855,KC= 0.1787 Ncalc = 2.23 - 2.24 Biaxial (+), a=2.2, g=2.3-2.42, bire=0.1000-0.2200, 2V(Meas)=~90. |
| Calculated Properties of SchumacheriteBulk Density (Electron Density)=5.87 gm/cc |
note: Specific Gravity of Schumacherite =6.94 gm/cc. Fermion Index = 0.000255937 |
Boson Index = 0.999744063 PESchumacherite =1,331.50 barns/electron |
U=PESchumacherite x rElectron Density=7,809.47 barns/cc. GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Schumacherite is Not Radioactive | Schumacherite Classification41.10.09.02 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen |
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(41.10)where (A++ B++)3 (XO4)2 Zq |
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(41.10.09)Preisingerite Group |
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08.BO.10 08 - PHOSPHATES, ARSENATES, VANADATES |
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08.B - Phosphates, etc. with Additional Anions, without H2O |
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08.BO -With only large cations, (OH, etc.):RO4 ³ 1:1 |
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| Other Schumacherite InformationNAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8) |
Links to other databases for Schumacherite : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - GeoScienceWorld 6 - Google Images 7 - Google Scholar 8 - Handbook of Mineralogy (MinSocAm) 9 - Handbook of Mineralogy (UofA) 10 - MinDAT 11 - Mineralienatlas (Deutsch) 12 - Online Mineral Museum 13 - QUT Mineral Atlas 14 - Ruff.Info Search for Schumacherite using: Visit our Advertisers for Schumacherite : B & L Fine MineralsDan Weinrich Fine Minerals Dan Weinrich Auctions Dakota Matrix Excalibur Minerals Exceptional Minerals Fabre Minerals John Betts Fine Minerals Lapis Mineral Journal Mineral News UV Tools Wrights Rock Shop Translate Schumacherite Mineral Data : Ask about Schumacherite here : Print or Cut-and-Paste your Schumacherite Specimen Label here :
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