Mineralogy Database

Chalcomenite Mineral Data

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General Chalcomenite Information

Help on Chemical  Formula: Chemical Formula: CuSeO3•2(H2O)
Help on Composition: 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
Help on Empirical Formula: Empirical Formula: Cu(SeO3)•2(H2O)
Help on Environment: Environment: Secondary mineral in oxidized Cu-Se-bearing deposits.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1881
Help on Locality: Locality: Sierra de Cacheuta, in the Sierra de Umango and Sierra de Famatina, La Rioja Province, Argentina. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek for copper and moon.
Help on Name Pronunciation: Name Pronunciation: Chalcomenite + Pronunciation Say CHALCOMENITE
Help on Synonym: Synonym: ICSD 64672
  PDF 17-523
 

Chalcomenite Image

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  Chalcomenite

Comments: Blue crystals of chalcomenite on matrix.
Location: El Dragón mine, Quijarro province, Potosí, Bolivia. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Chalcomenite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.7256:1:0.8032
Help on Cell Dimensions: Cell Dimensions: a = 6.671, b = 9.193, c = 7.384, Z = 4; V = 452.83 Den(Calc)= 3.32
Help on Crystal System: Crystal System: Orthorhombic - Disphenoidal H-M Symbol (2 2 2) Space Group: P 212121
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 5.39(1), 4.94(0.9), 3.35(0.8),
Help on Forms: Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

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I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 1 1 1) ( 1 2 0) ( 0 1 1) ( 1 1 0) ( 1 0 1)

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Physical Properties of Chalcomenite

Help on Cleavage: Cleavage: None
Help on Color: Color: Light blue.
Help on Density: Density: 3.312
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 2-2.5 - Gypsum-Finger Nail
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: light blue
 

Optical Properties of Chalcomenite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.046 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.044 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2185,KPDmeas= 0.219,KC= 0.2093
Ncalc = 1.69
Help on Optical Data: Optical Data: Biaxial (-), a=1.712, b=1.732, g=1.732, bire=0.0200, 2V(Calc)=0, 2V(Meas)=0.
 

Calculated Properties of Chalcomenite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.14 gm/cc
note: Specific Gravity of Chalcomenite =3.32 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEChalcomenite = 38.53 barns/electron
U=PEChalcomenite x rElectron Density= 120.85 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Chalcomenite is Not Radioactive
 

Chalcomenite Classification

Help on  Dana Class: Dana Class: 34.02.02.01 (34)Selenites - Tellurites - Sulfites
  (34.02)as A++ XO3 � x(H2O)
  (34.02.02)Chalcomenite Group (Orthorhombic)
 
34.02.02.01 Chalcomenite CuSeO3•2(H2O) P 212121 2 2 2
 
34.02.02.02 Teineite CuTeO3•2(H2O) P 212121 2 2 2
Help on  Strunz Class: Strunz Class: 04.JH.05 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.05 Chalcomenite CuSeO3•2(H2O) P 212121 2 2 2
 

Other Chalcomenite Information

Help on References: References: NAME( AntBidBlaNic5) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Chalcomenite :
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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Chalcomenite

CuSeO3•2(H2O)
Dana No: 34.02.02.01 Strunz No: 04.JH.05
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