Clinochalcomenite Mineral Data

General Clinochalcomenite Information

Chemical Formula:

CuSeO3•2(H2O)

Composition:

Molecular Weight = 226.53 gm

Copper 28.05 % Cu 35.11 % CuO

Hydrogen 1.78 % H 15.91 % H₂O

Selenium 34.86 % Se 48.98 % SeO₂

Oxygen 35.31 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Cu(SeO₃)•2(H₂O)

Environment:

Secondary mineral in the oxidized zone of a uranium deposit in brecciated carbonaceous slate. Dimorphous with chalcomenite.

IMA Status:

Approved IMA 1980

Locality:

Undisclosed locality in Gansu Province, China. Link to MinDat.org Location Data.

Name Origin:

Named as the monoclinic dimorph of chalcomenite.

Clinochalcomenite Image

Images:

Clinochalcomenite

Comments: Blue-green crystalline coating of clinochalcomenite on sulfide ore.
Location: Mina El Dragon, Potosi, Bolivia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Images:

Kerstenite Clinochalcomenite Krutaite

Comments: Tan opaque fibrous kerstenite with possible blue clinochalcomenite on dark krutaite.
Location: Mina El Dragon, Potosi, Bolivia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Clinochalcomenite Crystallography

Axial Ratios:

a:b:c =0.9495:1:0.7304

Cell Dimensions:

a = 8.177, b = 8.611, c = 6.29, Z = 4; beta = 97.267° V = 439.33 Den(Calc)= 3.42

Crystal System:

Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 2₁/n

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

By Intensity(I/I_o): 5.89(1), 3.66(0.9), 2.926(0.8),

Physical Properties of Clinochalcomenite

Cleavage:

{110} Perfect

Color:

Bluish green.

Density:

3.28

Diaphaneity:

Transparent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Hardness:

2 - Gypsum

Luster:

Vitreous (Glassy)

Streak:

light green

Optical Properties of Clinochalcomenite

Gladstone-Dale:

CI meas= -0.05 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.007 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2108,KPDmeas= 0.2198,KC= 0.2093
Ncalc = 1.69 - 1.72

Optical Data:

Biaxial (-), a=1.675, b=1.723, g=1.765, bire=0.0900, 2V(Calc)=82, 2V(Meas)=78.

Calculated Properties of Clinochalcomenite

Electron Density:

Bulk Density (Electron Density)=3.23 gm/cc
note: Specific Gravity of Clinochalcomenite =3.42 gm/cc.

Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Photoelectric:

PE_{Clinochalcomenite}= 38.53 barns/electron
U=PE_{Clinochalcomenite} x rElectron Density= 124.49 barns/cc.

Radioactivity:

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

Clinochalcomenite Classification

Dana Class:

34.02.03.01 (34)Selenites - Tellurites - Sulfites

(34.02)as A++ XO3 ï¿½ x(H2O)

(34.02.03)Chalcomenite Group (Monoclinic)

34.02.03.01 Clinochalcomenite CuSeO3•2(H2O) P 2₁/n 2/m

34.02.03.02 Cobaltomenite CoSeO3•2(H2O) P 2₁/n 2/m

34.02.03.03 Ahlfeldite (Ni,Co)SeO3•2(H2O) P 2₁/m 2/m

Strunz Class:

04.JH.10 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.J - Arsenites, Antimonites, Bismuthites, Sulfites,

04.JH -Selenites without additional anions, with H2O

04.JH.10 Ahlfeldite (Ni,Co)SeO3•2(H2O) P 2₁/m 2/m

04.JH.10 Clinochalcomenite CuSeO3•2(H2O) P 2₁/n 2/m

04.JH.10 Cobaltomenite CoSeO3•2(H2O) P 2₁/n 2/m

Other Clinochalcomenite Information

References:

NAME( AntBidBlaNic5) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Clinochalcomenite :
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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Clinochalcomenite

CuSeO3•2(H2O)
Dana No: 34.02.03.01 Strunz No: 04.JH.10
Locality:

Notes:

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