Kamchatkite Mineral Data

General Kamchatkite Information

Chemical Formula:

KCu++3OCl(SO4)2

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

Empirical Formula:

KCu₃OCl(SO₄)₂

Environment:

Volcanic sublimate formed between 120 deg C and 140 deg C.

IMA Status:

Approved IMA 1988

Locality:

Tolbachik fissure volcano, Kamchatka Peninsula, Russia. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Name Pronunciation:

Kamchatkite + Pronunciation

Synonym:

ICSD 66309

PDF 41-1394

Kamchatkite Image

Images:

Kamchatkite

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

Axial Ratios:

a:b:c =0.7575:1:0.5444

Cell Dimensions:

a = 9.741, b = 12.858, c = 7.001, Z = 4; V = 876.87 Den(Calc)= 3.59

Crystal System:

Orthorhombic - Pyramidal H-M Symbol (mm2) Space Group: P na2₁

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

By Intensity(I/I_o): 7.76(1), 3.501(0.65), 2.591(0.41),

Physical Properties of Kamchatkite

Cleavage:

{???} Perfect

Color:

Greenish brown.

Density:

3.48

Diaphaneity:

Transparent

Hardness:

3.5 - Copper Penny

Luster:

Vitreous (Glassy)

Streak:

yellow

Optical Properties of Kamchatkite

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

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

Electron Density:

Bulk Density (Electron Density)=3.44 gm/cc
note: Specific Gravity of Kamchatkite =3.59 gm/cc.

Fermion Index:

Fermion Index = 0.0011721549
Boson Index = 0.9988278451

Photoelectric:

PE_Kamchatkite= 19.87 barns/electron
U=PE_Kamchatkite x r_electron= 68.42 barns/cc.

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

Dana Class:

30.02.08.01 (30)Anhydrous Sulfates Containing Hydroxyl or Halogen

(30.02)where (A B)2 XO4 Zq

(30.02.08)Dana Group

30.02.08.01 Kamchatkite KCu3OCl(SO4)2 P na2₁ mm2

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

References:

NAME( AntBidBlaNic5) PHYS. PROP.(Am.Min.,Vol.75,p1210,1990) OPTIC PROP.(Am.Min.,Vol.75,p1210,1990)

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
15 - WWW-MINCRYST

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

Kamchatkite

KCu++3OCl(SO4)2
Dana No: 30.02.08.01 Strunz No: 07.BC.35
Locality:

Notes:

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