Mineralogy Database

Kamchatkite Mineral Data

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General Kamchatkite Information

Help on Chemical  Formula: Chemical Formula: KCu++3OCl(SO4)2
Help on Composition: Composition: Molecular Weight = 473.32 gm
   Potassium   8.26 %  K     9.95 % K2O
   Copper     40.28 %  Cu   50.42 % CuO
   Sulfur     13.55 %  S    33.83 % SO3
   Chlorine    7.49 %  Cl    7.49 % Cl
                -   %   Cl   -1.69 % -O=Cl2   
   Oxygen     30.42 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: KCu3OCl(SO4)2
Help on Environment: Environment: Volcanic sublimate formed between 120 deg C and 140 deg C.
Help on IMA Status: IMA Status: Approved IMA 1988
Help on Locality: Locality: Tolbachik fissure volcano, Kamchatka Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Kamchatkite + Pronunciation Say KAMCHATKITE
Help on Synonym: Synonym: ICSD 66309
  PDF 41-1394

Kamchatkite Image

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Comments: Greenish brown crystals of kamchatkite in sealed plastic box.
Location: Main Fracture Eruption (1975-1976), Tolbachik Volcano, Kamchatka, Russia. Scale: Specimen Size 2x3 cm.
© Diederik Visser

Kamchatkite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.7575:1:0.5444
Help on Cell Dimensions: Cell Dimensions: a = 9.741, b = 12.858, c = 7.001, Z = 4; V = 876.87 Den(Calc)= 3.59
Help on Crystal System: Crystal System: Orthorhombic - Pyramidal H-M Symbol (mm2) Space Group: P na21
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 7.76(1), 3.501(0.65), 2.591(0.41),

Physical Properties of Kamchatkite

Help on Cleavage: Cleavage: {???} Perfect
Help on Color: Color: Greenish brown.
Help on Density: Density: 3.48
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 3.5 - Copper Penny
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: yellow

Optical Properties of Kamchatkite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.102 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.068 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2017,KPDmeas= 0.208,KC= 0.1888
Ncalc = 1.66 - 1.68
Help on Optical Data: Optical Data: Biaxial (+), a=1.695, b=1.718, g=1.759, bire=0.0640, 2V(Calc)=76, 2V(Meas)=75.

Calculated Properties of Kamchatkite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.44 gm/cc
note: Specific Gravity of Kamchatkite =3.59 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0011721549
Boson Index = 0.9988278451
Help on Photoelectric: Photoelectric: PEKamchatkite = 19.87 barns/electron
U=PEKamchatkite x relectron= 68.42 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 114.33 (Gamma Ray American Petroleum Institute Units)
Concentration of Kamchatkite per GRapi unit = 0.87 (%)

Estimated Radioactivity from Kamchatkite - barely detectable


Kamchatkite Classification

Help on  Dana Class: Dana Class: (30)Anhydrous Sulfates Containing Hydroxyl or Halogen
  (30.02)where (A B)2 XO4 Zq
  (30.02.08)Dana Group Kamchatkite KCu3OCl(SO4)2 P na21 mm2
Help on  Strunz Class: Strunz Class: 07.BC.35 07 - SULFATES (SELENATES, TELLURATES)
  07.B - Sulfates (selenates, etc.) with Additional Anions, without H2O
  07.BC -With medium-sized and large cations
07.BC.35 Kamchatkite KCu3OCl(SO4)2 P na21 mm2

Other Kamchatkite Information

Help on References: References: NAME( AntBidBlaNic5) PHYS. PROP.(Am.Min.,Vol.75,p1210,1990) OPTIC PROP.(Am.Min.,Vol.75,p1210,1990)
Help on See Also: See Also: Links to other databases for Kamchatkite :
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: 07.BC.35





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