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Mcbirneyite Mineral Data
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General Mcbirneyite Information
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 Chemical Formula: |
Cu3(VO4)2 |
| Composition: |
Molecular Weight = 420.52 gm |
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Vanadium 24.23 % V 43.25 % V2O5 |
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Copper 45.33 % Cu 56.75 % CuO |
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Oxygen 30.44 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Cu3(VO4)2 |
| Environment: |
Sulfate zone of sublimates around a fumarole in a composite volcano, likely formed between 100 deg C-200 deg C. |
| IMA Status: |
Approved IMA 1984 |
| Locality: |
Fumarole "Y", Izalco Volcano, El Salvador. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Alexander Robert McBirney (1924-), Volcanologist, University of Oregon, Corvallis, Oregon, USA. |
| Name Pronunciation: |
Mcbirneyite + Pronunciation  |
| Synonym: |
ICSD 27184 |
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PDF 44-1480 |
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Mcbirneyite Crystallography
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| Axial Ratios: |
a:b:c =0.8205:1:0.7956 |
| Cell Dimensions: |
a = 5.3418, b = 6.51, c = 5.1798, Z = 1; alpha = 88.61°, beta = 68.11°, gamma = 69.22° V = 156.22 Den(Calc)= 4.47 |
| Crystal System: |
Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1 |
| X Ray Diffraction: |
By Intensity(I/Io): 2.82(1), 3.12(1), 4.01(0.8), |
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Physical Properties of Mcbirneyite
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| Color: |
Dark gray, Black. |
| Diaphaneity: |
Opaque |
| Luster: |
Metallic |
| Streak: |
grayish black |
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Optical Properties of Mcbirneyite
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| Optical Data: |
NCalc= 2.1 - from Gladstone-Dale relationship (KC = 0.2435) where Ncalc=Dcalc*KC+1
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Calculated Properties of Mcbirneyite
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| Electron Density: |
Bulk Density (Electron Density)=4.22 gm/cc
note: Specific Gravity of Mcbirneyite =4.50 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0007518027
Boson Index = 0.9992481973 |
| Photoelectric: |
PEMcbirneyite = 25.11 barns/electron
U=PEMcbirneyite x rElectron Density= 105.88 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Mcbirneyite is Not Radioactive |
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Mcbirneyite Classification
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| Dana Class: |
38.03.10.01 (38)Anhydrous Phosphates, etc |
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(38.03)(A+ B++)3 (XO4)2 |
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(38.03.10)Dana Group |
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38.03.10.01 Mcbirneyite Cu3(VO4)2 P1 1 |
| Strunz Class: |
08.AB.35 08 - PHOSPHATES, ARSENATES, VANADATES |
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08.A - Phosphates, etc. without additional anions, without H2O |
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08.AB -With medium-sized cations |
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08.AB.35 Stranskiite Zn2Cu(AsO4)2 P1 1 |
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08.AB.35 Mcbirneyite Cu3(VO4)2 P1 1 |
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Other Mcbirneyite Information
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| References: |
NAME( AntBidBlaNic5) PHYS. PROP.(Am.Min.,Vol.73,p1495,1988) |
| See Also: |
Links to other databases for Mcbirneyite :
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 Mcbirneyite Specimen Label here :
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Mcbirneyite
Cu3(VO4)2
Dana No: 38.03.10.01 Strunz No: 08.AB.35
Locality:
Notes:
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