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Stoiberite Mineral Data
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General Stoiberite Information
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 Chemical Formula: |
Cu5V+++++2O10 |
| Composition: |
Molecular Weight = 579.61 gm |
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Vanadium 17.58 % V 31.38 % V2O5 |
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Copper 54.82 % Cu 68.62 % CuO |
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Oxygen 27.60 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Cu5V5+2O10 |
| Environment: |
Rare mineral, deposited in vanadium-bearing sublimates in fumaroles on a basaltic volcanic cone. |
| IMA Status: |
Approved IMA 1979 |
| Locality: |
Izalco volcano, El Salvador. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Richard Edwin Stoiber (1911-2001), Emeritus Professor of Geology and Vulcanology, Dartmouth College, Hanover, New Hampshire, USA. |
| Name Pronunciation: |
Stoiberite + Pronunciation  |
| Synonym: |
ICSD 2557 |
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PDF 33-504 |
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Stoiberite Crystallography
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| Axial Ratios: |
a:b:c =2.5857:1:1.385 |
| Cell Dimensions: |
a = 15.654, b = 6.054, c = 8.385, Z = 4; beta = 102.29° V = 776.43 Den(Calc)= 4.96 |
| Crystal System: |
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/n |
| X Ray Diffraction: |
By Intensity(I/Io): 7.92(1), 2.095(0.8), 2.755(0.8), |
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Physical Properties of Stoiberite
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| Color: |
Black, Reddish brown. |
| Density: |
4.96 |
| Diaphaneity: |
Opaque |
| Luster: |
Metallic |
| Streak: |
red brown |
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Optical Properties of Stoiberite
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| Optical Data: |
NCalc= 2.11 - from Gladstone-Dale relationship (KC = 0.2233) where Ncalc=Dcalc*KC+1
NCalc= 2.11 - from Gladstone-Dale relationship (KC = 0.2233) where Ncalc=Dmeas*KC+1
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Calculated Properties of Stoiberite
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| Electron Density: |
Bulk Density (Electron Density)=4.64 gm/cc
note: Specific Gravity of Stoiberite =4.96 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0005719472
Boson Index = 0.9994280528 |
| Photoelectric: |
PEStoiberite = 28.12 barns/electron
U=PEStoiberite x rElectron Density= 130.43 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Stoiberite is Not Radioactive |
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Stoiberite Classification
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| Dana Class: |
41.04.05.01 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen |
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(41.04)where (A B)5 (XO4)2 Zq |
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(41.04.05)Dana Group |
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41.04.05.01 Stoiberite Cu5V2O10 P 21/n 2/m |
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41.04.05.02 Averievite! Cu5(VO4)2O2•CuCl2 P 3 3 |
| Strunz Class: |
08.BB.75 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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08.BB.75 Stoiberite Cu5V2O10 P 21/n 2/m |
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Other Stoiberite Information
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| References: |
NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) |
| See Also: |
Links to other databases for Stoiberite :
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
15 - WWW-MINCRYST
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Print or Cut-and-Paste your Stoiberite Specimen Label here :
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Stoiberite
Cu5V+++++2O10
Dana No: 41.04.05.01 Strunz No: 08.BB.75
Locality:
Notes:
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