Fingerite Mineral Data

Fingerite Mineral Data
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General Fingerite Information

Help on Chemical Formula: Chemical Formula: Cu11(VO4)6O2
Help on Composition: Composition: Molecular Weight = 1,420.64 gm
   Vanadium  21.51 %  V    38.41 % V2O5
   Copper    49.20 %  Cu   61.59 % CuO
   Oxygen    29.28 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Cu11(VO4)6O2
Help on Environment: Environment: Component of vanadium-bearing sublimates in fumaroles on a basaltic volcanic cone, formed between 100 deg C and 200 deg C.
Help on IMA Status: IMA Status: Approved IMA 1985
Help on Locality: Locality: Izalco volcano, El Salvador. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Larry W. Finger (1940- ), American mineralogist, Carnegie Institution, Washington, D.C., USA.
Help on Name Pronunciation: Name Pronunciation: Fingerite + Pronunciation Say FINGERITE
Help on Synonym: Synonym: ICSD 201626
  PDF 38-378
 

Fingerite Image

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Fingerite

Comments: Black submetallic well-formed prismatic crystals on matrix with black, poorly-formed ziesite.
Location: Izalco Volcano, Sonsonate Department, El Salvador. Scale: See Image.
© Rruff Database

Fingerite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.9865:1:0.9727
Help on Cell Dimensions: Cell Dimensions: a = 8.1576, b = 8.2691, c = 8.0437, Z = 1; alpha = 107.144°, beta = 91.389°, gamma = 106.441° V = 497.14 Den(Calc)= 4.74
Help on Crystal System: Crystal System: Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 6.48(1), 3.042(0.8), 2.822(0.7),
Click Here for Large Fingerite Structure Window Crystal Structure:

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Finger L W , American Mineralogist , 70 (1985) p.197-199, Fingerite Cu11O2(VO4)6: a new vanadium sublimate from Izalco Volcano, El, Salvador: crystal structure

 

Physical Properties of Fingerite

Help on Color: Color: Black.
Help on Diaphaneity: Diaphaneity: Opaque
Help on Luster: Luster: Metallic
Help on Streak: Streak: dark red brown
 

Optical Properties of Fingerite

Help on Optical Data: Optical Data: NCalc= 2.12 - from Gladstone-Dale relationship (KC = 0.2353) where Ncalc=Dcalc*KC+1
 

Calculated Properties of Fingerite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.48 gm/cc
note: Specific Gravity of Fingerite =4.78 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0006784234
Boson Index = 0.9993215766
Help on Photoelectric: Photoelectric: PEFingerite = 26.34 barns/electron
U=PEFingerite x rElectron Density= 117.86 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Fingerite is Not Radioactive
 

Fingerite Classification
Help on Dana Class: Dana Class: 41.11.03.01 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
  (41.11)with miscellaneous formulae
  (41.11.03)Dana Group
 
41.11.03.01 Fingerite Cu11(VO4)6O2 P1 1
Help on Strunz Class: Strunz Class: 08.BB.80 08 - PHOSPHATES, ARSENATES, VANADATES
  08.B - Phosphates, etc. with Additional Anions, without H2O
  08.BB -With only medium-sized cations, (OH, etc.):RO4 £ 1:1
 
08.BB.80 Fingerite Cu11(VO4)6O2 P1 1
 

Other Fingerite Information
Help on References: References: NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Fingerite :
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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Fingerite

Cu11(VO4)6O2
Dana No: 41.11.03.01 Strunz No: 08.BB.80
Locality:

 

Notes: