Ponomarevite Mineral Data

General Ponomarevite Information

Chemical Formula:

K4Cu++4OCl10

Composition:

Molecular Weight = 781.10 gm

Potassium 20.02 % K 24.12 % K₂O

Copper 32.54 % Cu 40.73 % CuO

Chlorine 45.39 % Cl 45.39 % Cl

- % Cl -10.24 % -O=Cl₂

Oxygen 2.05 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

K₄Cu₄OCl₁₀

Environment:

Fracture filling and in fumaroles, deposited from 280-400 deg C.

IMA Status:

Approved IMA 1988

Locality:

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

Name Origin:

Named for Vasilii Vasilï¿½evich Ponomarev (1940-1976), Russian vulcanologist, Institute of Volcanology, Petropavlovsk-Kamchatskii, Russia.

Name Pronunciation:

Ponomarevite + Pronunciation

Synonym:

ICSD 27260

PDF 45-1417

Ponomarevite Image

Images:

Ponomarevite

Comments: Orange ponomarevite. The sample stored in a closed vial. The photo was made through the vial.
Location: Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia. Scale: Picture size 3 mm.
© Thomas Witzke / Abraxas-Verlag

Ponomarevite Crystallography

Axial Ratios:

a:b:c =0.9912:1:0.6009

Cell Dimensions:

a = 14.73, b = 14.86, c = 8.93, Z = 4; beta = 104.9° V = 1,888.94 Den(Calc)= 2.75

Crystal System:

Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/c

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

By Intensity(I/I_o): 2.801(1), 2.787(0.8), 7.31(0.8),

Physical Properties of Ponomarevite

Color:

Orange red.

Density:

2.78

Diaphaneity:

Transparent

Hardness:

2.5 - Finger Nail

Luster:

Vitreous - Resinous

Streak:

orange

Optical Properties of Ponomarevite

Optical Data:

Biaxial (-), a=1.686, b=1.718, g=1.72, bire=0.0340, 2V(Calc)=26, 2V(Meas)=28.

Calculated Properties of Ponomarevite

Electron Density:

Bulk Density (Electron Density)=2.61 gm/cc
note: Specific Gravity of Ponomarevite =2.75 gm/cc.

Fermion Index:

Fermion Index = 0.0000338584
Boson Index = 0.9999661416

Photoelectric:

PE_Ponomarevite= 19.57 barns/electron
U=PE_Ponomarevite x r_electron= 51.00 barns/cc.

Radioactivity:

GRapi = 273.70 (Gamma Ray American Petroleum Institute Units)
Concentration of Ponomarevite per GRapi unit = 0.37 (%)

Estimated Radioactivity from Ponomarevite - barely detectable

Ponomarevite Classification

Dana Class:

10.06.12.01 (10)Oxyhalides and Hydroxyhalides

(10.06)where Am Bn (O,OH)p Xq

(10.06.12)Dana Group

10.06.12.01 Ponomarevite K4Cu4OCl10 C 2/c 2/m

Strunz Class:

03.DA.35 03 - HALIDES

03.D - Oxyhalides, Hydroxyhalides and Related Double Halides

03.DA -With Cu, etc., without Pb

03.DA.35 Ponomarevite K4Cu4OCl10 C 2/c 2/m

Other Ponomarevite Information

References:

NAME( AntBidBlaNic3) PHYS. PROP.(Am.Min.,Vol.75,p709,1990) OPTIC PROP.(Am.Min.,Vol.75,p709,1990)

See Also:

Links to other databases for Ponomarevite :
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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Ponomarevite

K4Cu++4OCl10
Dana No: 10.06.12.01 Strunz No: 03.DA.35
Locality:

Notes:

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