Coparsite Mineral Data

General Coparsite Information

Chemical Formula:

Cu4O2[(As,V)O4]Cl

Composition:

Molecular Weight = 446.55 gm

Vanadium 4.56 % V 8.15 % V₂O₅

Copper 55.50 % Cu 69.47 % CuO

Arsenic 10.07 % As 15.44 % As₂O₅

Chlorine 8.73 % Cl 8.73 % Cl

- % Cl -1.97 % -O=Cl₂

Oxygen 21.14 % O

______ ______

100.00 % 99.82 % = TOTAL OXIDE

Empirical Formula:

Cu_3.9O_1.9(AsO₄)_0.6(VO₄)_0.4Cl_1.1

Environment:

Microscopic inclusions in euchlorine. Volcanic fumaroles.

IMA Status:

Approved IMA 1999 (Dana # Added)

Locality:

Found in the Yadovitaya (= poisonous) Fumarole in the North Breach of the Main Tolbachik fissure eruption of 1975-1976, Kamchatka Peninsula, Russia. Link to MinDat.org Location Data.

Name Origin:

The name recalls the mineral’s constituents: copper and arsenic.

Synonym:

IMA1996-064

IMA1996-064a

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Coparsite Crystallography

Axial Ratios:

a:b:c =0.4877:1:0.9263

Cell Dimensions:

a = 5.44, b = 11.154, c = 10.333, Z = 4; V = 626.98 Den(Calc)= 4.73

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pbcm

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.62(1), 3.03(0.6), 2.39(0.4),4.69(0.4), 3.7(0.3), 5.31(0.3), 1.67(0.2),

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

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Physical Properties of Coparsite

Cleavage:

{100} Perfect

Color:

Black, Dark gray.

Diaphaneity:

Opaque

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Inclusions - Generally found as inclusions in other minerals.

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Luster:

Metallic

Streak:

brown

Optical Properties of Coparsite

Optical Data:

NCalc= 1.94 - from Gladstone-Dale relationship (KC = 0.1984) where Ncalc=Dcalc*KC+1

Calculated Properties of Coparsite

Electron Density:

Bulk Density (Electron Density)=4.41 gm/cc
note: Specific Gravity of Coparsite =4.73 gm/cc.

Fermion Index:

Fermion Index = 0.0002155438
Boson Index = 0.9997844562

Photoelectric:

PE_Coparsite= 33.56 barns/electron
U=PE_Coparsite x rElectron Density= 147.88 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Coparsite is Not Radioactive

Coparsite Classification

Dana Class:

41.11.07.01 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen

(41.11)with miscellaneous formulae

(41.11.07)Dana Group

41.11.07.01 Coparsite! Cu4O2[(As,V)O4]Cl Pbcm 2/m 2/m 2/m

Strunz Class:

08.BE.80 08 - PHOSPHATES, ARSENATES, VANADATES

08.B - Phosphates, etc. with Additional Anions, without H2O

08.BE -With only medium-sized cations, (OH, etc.):RO4 > 2:1

08.BE.80 Coparsite! Cu4O2[(As,V)O4]Cl Pbcm 2/m 2/m 2/m

Other Coparsite Information

References:

NAME( CanMin 8/99) PHYS. PROP.(MinRec, Vol 31, No 4)

See Also:

Links to other databases for Coparsite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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Print or Cut-and-Paste your Coparsite Specimen Label here :

Coparsite

Cu4O2[(As,V)O4]Cl
Dana No: 41.11.07.01 Strunz No: 08.BE.80
Locality:

Notes: