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
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
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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:
PECoparsite = 33.56 barns/electron U=PECoparsite 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
Chemical Formula: