Mineralogy Database

Trippkeite Mineral Data

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General Trippkeite Information

Help on Chemical  Formula: Chemical Formula: CuAs+++2O4
Help on Composition: Composition: Molecular Weight = 277.39 gm
   Copper   22.91 %  Cu   28.68 % CuO
   Arsenic  54.02 %  As   71.32 % As2O3
   Oxygen   23.07 %  O
           ______        ______ 
           100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CuAs2O4
Help on Environment: Environment: In a copper deposit.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1880
Help on Locality: Locality: Copiapo, Atacama, Chile. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Paul Trippke (1851-1880), Polish mineralogist, who discovered the mineral.
Help on Name Pronunciation: Name Pronunciation: Trippkeite + Pronunciation Say TRIPPKEITE
Help on Synonym: Synonym: ICSD 4287
  PDF 31-451

Trippkeite Image

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Comments: Tiny bluegreen crystals of trippkeite, maximum size about 1 mm in volcanic rock. Type specimen for trippkeite.
Location: Copiapo, Atacama, Chile. Scale: Specimen Size 14x6 mm.
© German Type Specimen Catalogue

Trippkeite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.64862
Help on Cell Dimensions: Cell Dimensions: a = 8.592, c = 5.573, Z = 4; V = 411.41 Den(Calc)= 4.48
Help on Crystal System: Crystal System: Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: P 41/mbc
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.16(1), 6.07(0.55), 3.04(0.45),
Help on Forms: Forms:

Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 1 2 1) ( 0 1 1) ( 0 2 1) ( 1 1 0) ( 1 0 0) ( 0 0 1)

Warning: this java applet does not work in some browsers because of security restrictions.


Physical Properties of Trippkeite

Help on Cleavage: Cleavage: {100} Perfect, {110} Good
Help on Color: Color: Greenish blue.
Help on Density: Density: 4.8
Help on Diaphaneity: Diaphaneity: Subopaque
Help on Hardness: Hardness: 4 - Fluorite
Help on Luster: Luster: Adamantine

Optical Properties of Trippkeite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.027 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.042 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2254,KPDmeas= 0.2104,KC= 0.2164
Ncalc = 1.97 - 2.04
Help on Optical Data: Optical Data: Uniaxial (+), w=1.9, e=2.12, bire=0.2200.

Calculated Properties of Trippkeite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.40 gm/cc
note: Specific Gravity of Trippkeite =4.80 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0001107437
Boson Index = 0.9998892563
Help on Photoelectric: Photoelectric: PETrippkeite = 48.66 barns/electron
U=PETrippkeite x rElectron Density= 213.87 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Trippkeite is Not Radioactive

Trippkeite Classification

Help on  Dana Class: Dana Class: (45)Acid and normal Antimonites, Arsenites and Phosphites
  (45.01)with miscellaneous formulae
  (45.01.05)Dana Group Trippkeite CuAs2O4 P 41/mbc 4/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 04.JA.20 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.J - Arsenites, Antimonites, Bismuthites, Sulfites,
  04.JA -Arsenites, antimonites, bismuthites; without additional anions, without H2O
04.JA.20 Kusachiite CuBi2O4 P 4/ncc 4/m 2/m 2/m
04.JA.20 Schafarzikite FeSb2O4 P 41/mbc 4/m 2/m 2/m
04.JA.20 Trippkeite CuAs2O4 P 41/mbc 4/m 2/m 2/m

Other Trippkeite Information

Help on References: References: NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Trippkeite :
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: 04.JA.20





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