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Fingerite Mineral Data
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General Fingerite Information
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 Chemical Formula: |
Cu11(VO4)6O2 |
| Composition: |
Molecular Weight = 1,420.64 gm |
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Vanadium 21.51 % V 38.41 % V2O5 |
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Copper 49.20 % Cu 61.59 % CuO |
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Oxygen 29.28 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Cu11(VO4)6O2 |
| Environment: |
Component of vanadium-bearing sublimates in fumaroles on a basaltic volcanic cone, formed between 100 deg C and 200 deg C. |
| IMA Status: |
Approved IMA 1985 |
| Locality: |
Izalco volcano, El Salvador. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Larry W. Finger (1940- ), American mineralogist, Carnegie Institution, Washington, D.C., USA. |
| Name Pronunciation: |
Fingerite + Pronunciation  |
| Synonym: |
ICSD 201626 |
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PDF 38-378 |
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Fingerite Image |
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Images:
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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 |
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Fingerite Crystallography
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| Axial Ratios: |
a:b:c =0.9865:1:0.9727 |
| 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 |
| Crystal System: |
Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1 |
| X Ray Diffraction: |
By Intensity(I/Io): 6.48(1), 3.042(0.8), 2.822(0.7), |
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Physical Properties of Fingerite
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| Color: |
Black. |
| Diaphaneity: |
Opaque |
| Luster: |
Metallic |
| Streak: |
dark red brown |
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Optical Properties of Fingerite
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| Optical Data: |
NCalc= 2.12 - from Gladstone-Dale relationship (KC = 0.2353) where Ncalc=Dcalc*KC+1
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Calculated Properties of Fingerite
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| Electron Density: |
Bulk Density (Electron Density)=4.48 gm/cc
note: Specific Gravity of Fingerite =4.78 gm/cc.
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| Fermion Index: |
Fermion Index = 0.0006784234
Boson Index = 0.9993215766 |
| Photoelectric: |
PEFingerite = 26.34 barns/electron
U=PEFingerite x rElectron Density= 117.86 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Fingerite is Not Radioactive |
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Fingerite Classification
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| Dana Class: |
41.11.03.01 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen |
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(41.11)with miscellaneous formulae |
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(41.11.03)Dana Group |
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41.11.03.01 Fingerite Cu11(VO4)6O2 P1 1 |
| Strunz Class: |
08.BB.80 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.80 Fingerite Cu11(VO4)6O2 P1 1 |
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Other Fingerite Information
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| References: |
NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) |
| 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:
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