Pushcharovskite Mineral Data

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.

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

Diaphaniety:

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= -0.078 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2077,KPDmeas= 0.1959,KC= 0.1926

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:

r_electron=3.20 gm/cc
note: r_{Pushcharovskite}=3.35 gm/cc.

Fermion Index

Fermion Index = 0.00018
Boson Index = 0.99982

Photoelectric:

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

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Pushcharovskite is Not Radioactive

Pushcharovskite Classification

Dana Class:

40.5.12.2 (40)Hydrated Phosphates, etc

(40.5)with miscellaneous formulae

(40.5.12)Dana Group

40.5.12.1 Geminite Cu2As2O7·3(H2O) P1 or P1 Tri

40.5.12.2 Pushcharovskite ! Cu(AsO3OH)·1.5(H2O) P1 or P1 Tri

Strunz Class:

VII/C.06-32 VII - Phosphates, Arsenates and Vanadates

VII/C - Water-bearing phosphates without unfamiliar anions. cations of medium and small size: Be and Mn, Fe, Cu, Zn, Mg

VII/C.06 - Cobaltkoritnigite - Geigerite series

VII/C.06-10 Cobaltkoritnigite (Co,Zn)(AsO3OH)·(H2O) P1 1

VII/C.06-20 Koritnigite ZnHAsO4·(H2O) P1 1

VII/C.06-30 Geminite Cu2As2O7·3(H2O) P1 or P1 Tri

VII/C.06-32 Pushcharovskite Cu(AsO3OH)·1.5(H2O) P1 or P1 Tri

VII/C.06-35 Yvonite! Cu(AsO3OH)·2(H2O) P1 1

VII/C.06-37 Rollandite! Cu3(AsO4)2·4(H2O) P nma 2/m 2/m 2/m

VII/C.06-40 Chudobaite (Mg,Zn)5(AsO3OH)2(AsO4)2·10(H2O) P1 1

VII/C.06-50 Lindackerite CuCu4(AsO4)2(AsO3OH)2·~9(H2O) P1 1

VII/C.06-60 Geigerite Mn5(AsO3OH)2(AsO4)2·10(H2O) P1 1

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 -Google Images 4 -Google Scholar 5 -Handbook of Mineralogy (UofA) 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas

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

Pushcharovskite

Cu(AsO3OH)·1.5(H2O)
Dana No: 40.5.12.2 Strunz No: VII/C.06-32
Locality:

Notes: