Pushcharovskite Mineral Data

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General Pushcharovskite Information

Chemical Formula:

Cu(AsO3OH)•1.5(H2O)

Composition:

Molecular Weight = 230.50 gm

Copper 27.57 % Cu 34.51 % CuO

Arsenic 32.50 % As 49.86 % As₂O₅

Hydrogen 1.75 % H 15.63 % H₂O

Oxygen 38.18 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Cu(AsO₃OH)•1.5(H₂O)

Environment:

A polymorph of germinite.

IMA Status:

Approved IMA 1996 (Dana # Added)

Locality:

The Cap Garonne mine, near Le Pradet, Var, France. Link to MinDat.org Location Data.

Name Origin:

Named after Dmitry Yurievich Pushcharovsky (b. 1944), crystallographer, Moscow State University, Russia.

Name Pronunciation:

Pushcharovskite + Pronunciation

Synonym:

ICSD 411236

IMA1995-048

PDF 51-1590

Pushcharovskite Image

Images:

Pushcharovskite

Comments: Light bluish, acicular crystals of pushcharovskite.
Location: Salsigne Mine, Montagne Noire, Aude, Languedoc-Roussillon, France. Scale: Picture size 1.2 mm.
© Thomas Witzke / Abraxas-Verlag

Pushcharovskite Crystallography

Axial Ratios:

a:b:c =0.8691:1:1.2246

Cell Dimensions:

a = 13.6164, b = 15.6672, c = 19.1869, Z = 32; alpha = 106.933°, beta = 91.531°, gamma = 98.4° V = 3,872.31 Den(Calc)= 3.16

Crystal System:

TriclinicSpace Group: P1 or P1

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

By Intensity(I/I_o): 11(1), 18.3(0.25), 3.878(0.2),3.389(0.15), 5.79(0.15),

Crystal Structure:

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Pushcharovsky D Y , Teat S J , Zaitsev V N , Zubkova N V , Sarp H , European Journal of Mineralogy , 12 (2000) p.95-104, Crystal structure of pushcharovskite

Physical Properties of Pushcharovskite

Color:

Very light green, Colorless.

Density:

3.35

Diaphaneity:

Transparent

Fracture:

Fibrous - Thin, elongated fractures produced by crystal forms or intersecting cleavages (e.g. asbestos).

Habit:

Acicular - Occurs as needle-like crystals.

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Pushcharovskite

Gladstone-Dale:

CI meas= -0.017 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.075 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.207,KPDmeas= 0.1959,KC= 0.1926
Ncalc = 1.61 - 1.65

Optical Data:

Biaxial (+), a=1.602, b=1.642, g=1.725, bire=0.1230, 2V(Calc)=74, 2V(Meas)=70. Dispersion r > v medium.

Calculated Properties of Pushcharovskite

Electron Density:

Bulk Density (Electron Density)=3.20 gm/cc
note: Specific Gravity of Pushcharovskite =3.35 gm/cc.

Fermion Index:

Fermion Index = 0.0001858738
Boson Index = 0.9998141262

Photoelectric:

PE_{Pushcharovskite}= 34.26 barns/electron
U=PE_{Pushcharovskite} x rElectron Density= 109.56 barns/cc.

Radioactivity:

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

Pushcharovskite Classification

Dana Class:

40.05.12.02 (40)Hydrated Phosphates, etc

(40.05)with miscellaneous formulae

(40.05.12)Dana Group

40.05.12.01 Geminite Cu2As2O7•3(H2O) P1 or P1 Tri

40.05.12.02 Pushcharovskite! Cu(AsO3OH)•1.5(H2O) P1 or P1 Tri

Strunz Class:

08.CA.55 08 - PHOSPHATES, ARSENATES, VANADATES

08.C - Phosphates without Additional Anions, with H2O

08.CA -With small and large/medium cations

08.CA.55 Pushcharovskite! Cu(AsO3OH)•1.5(H2O) P1 or P1 Tri

Other Pushcharovskite Information

References:

NAME( MinRec) PHYS. PROP.(AmMin Vol. 85, p 1847) OPTIC PROP.(MinRec)

See Also:

Links to other databases for Pushcharovskite :
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 Pushcharovskite Specimen Label here :

Pushcharovskite

Cu(AsO3OH)•1.5(H2O)
Dana No: 40.05.12.02 Strunz No: 08.CA.55
Locality:

Notes: