Mineralogy Database

Mcbirneyite Mineral Data

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General Mcbirneyite Information

Help on Chemical  Formula: Chemical Formula: Cu3(VO4)2
Help on Composition: Composition: Molecular Weight = 420.52 gm
   Vanadium  24.23 %  V    43.25 % V2O5
   Copper    45.33 %  Cu   56.75 % CuO
   Oxygen    30.44 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Cu3(VO4)2
Help on Environment: Environment: Sulfate zone of sublimates around a fumarole in a composite volcano, likely formed between 100 deg C-200 deg C.
Help on IMA Status: IMA Status: Approved IMA 1984
Help on Locality: Locality: Fumarole "Y", Izalco Volcano, El Salvador. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Alexander Robert McBirney (1924-), Volcanologist, University of Oregon, Corvallis, Oregon, USA.
Help on Name Pronunciation: Name Pronunciation: Mcbirneyite + Pronunciation Say MCBIRNEYITE
Help on Synonym: Synonym: ICSD 27184
  PDF 44-1480

Mcbirneyite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.8205:1:0.7956
Help on Cell Dimensions: 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
Help on Crystal System: Crystal System: Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.82(1), 3.12(1), 4.01(0.8),

Physical Properties of Mcbirneyite

Help on Color: Color: Dark gray, Black.
Help on Diaphaneity: Diaphaneity: Opaque
Help on Luster: Luster: Metallic
Help on Streak: Streak: grayish black

Optical Properties of Mcbirneyite

Help on Optical Data: Optical Data: NCalc= 2.1 - from Gladstone-Dale relationship (KC = 0.2435) where Ncalc=Dcalc*KC+1

Calculated Properties of Mcbirneyite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.22 gm/cc
note: Specific Gravity of Mcbirneyite =4.50 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0007518027
Boson Index = 0.9992481973
Help on Photoelectric: Photoelectric: PEMcbirneyite = 25.11 barns/electron
U=PEMcbirneyite x rElectron Density= 105.88 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Mcbirneyite is Not Radioactive

Mcbirneyite Classification

Help on  Dana Class: Dana Class: (38)Anhydrous Phosphates, etc
  (38.03)(A+ B++)3 (XO4)2
  (38.03.10)Dana Group Mcbirneyite Cu3(VO4)2 P1 1
Help on  Strunz Class: Strunz Class: 08.AB.35 08 - PHOSPHATES, ARSENATES, VANADATES
  08.A - Phosphates, etc. without additional anions, without H2O
  08.AB -With medium-sized cations
08.AB.35 Stranskiite Zn2Cu(AsO4)2 P1 1
08.AB.35 Mcbirneyite Cu3(VO4)2 P1 1

Other Mcbirneyite Information

Help on References: References: NAME( AntBidBlaNic5) PHYS. PROP.(Am.Min.,Vol.73,p1495,1988)
Help on See Also: 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

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Dana No: Strunz No: 08.AB.35