Mineralogy Database

Clinoclase Mineral Data

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General Clinoclase Information

Help on Chemical  Formula: Chemical Formula: Cu3(AsO4)(OH)3
Help on Composition: Composition: Molecular Weight = 380.58 gm
   Copper    50.09 %  Cu   62.70 % CuO
   Arsenic   19.69 %  As   30.20 % As2O5
   Hydrogen   0.79 %  H     7.10 % H2O
   Oxygen    29.43 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Cu3(AsO4)(OH)3
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1868
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek, klineis - "to incline" and klas - "to break."
Help on Name Pronunciation: Name Pronunciation: Clinoclase + Pronunciation Say CLINOCLASE
Help on Synonym: Synonym: ICSD 68456
  PDF 42-1357

Clinoclase Image

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Comments: Acicular, radiating crystals of clinoclase.
Location: Majuba Hill mine, Pershing County, Nevada, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

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Comments: Divergent, elongated, bladed blue crystals of clinoclase to 1mm on matrix.
Location: Majuba Hill mine, Pershing Co., Nevada, USA. Scale: Picture size 5x7 mm.
© Tom Loomis / Dakota Matrix

Clinoclase Crystallography

Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.587(1), 3.139(0.25), 7.21(0.2),
Help on Forms: Forms:

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

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

Help on Above

Forms: ( 2 0 1) ( 1 1 1) ( 3 0 2) ( 1 1 0) ( 1 0 0) ( 0 0 1)

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Physical Properties of Clinoclase

Help on Color: Color: Dark verdigris green, Blackish blue green, Blackish green.

Optical Properties of Clinoclase

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.084 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.068 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1919,KPDmeas= 0.1948,KC= 0.1797
Ncalc = 1.75 - 1.79

Calculated Properties of Clinoclase

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.10 gm/cc
note: Specific Gravity of Clinoclase =4.36 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0001424449
Boson Index = 0.9998575551
Help on Photoelectric: Photoelectric: PEClinoclase = 35.98 barns/electron
U=PEClinoclase x rElectron Density= 147.59 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Clinoclase is Not Radioactive

Clinoclase Classification

Help on  Dana Class: Dana Class: (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
  (41.03)where (A B)3 (XO4) Zq
  (41.03.01)Clinoclase Group Clinoclase Cu3(AsO4)(OH)3 P 21/a 2/m Gilmarite! Cu3(AsO4)(OH)3 P1 1 Lapeyreite! Cu3O[AsO3(OH)]2•H2O C 2/m 2/m
Help on  Strunz Class: Strunz Class: 08.BE.20 08 - PHOSPHATES, ARSENATES, VANADATES
  08.B - Phosphates, etc. with Additional Anions, without H2O
  08.BE -With only medium-sized cations, (OH, etc.):RO4 > 2:1
08.BE.20 Clinoclase Cu3(AsO4)(OH)3 P 21/a 2/m

Other Clinoclase Information

Help on See Also: See Also: Links to other databases for Clinoclase :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - Franklin Minerals(Dunn)
7 - GeoScienceWorld
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - MinDAT
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - QUT Mineral Atlas
16 - Ruff.Info
18 - theimage

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Dana No: Strunz No: 08.BE.20




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