Clinoclase Mineral Data

General Clinoclase Information

Chemical Formula:

Cu3(AsO4)(OH)3

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

Empirical Formula:

Cu₃(AsO₄)(OH)₃

IMA Status:

Valid Species (Pre-IMA) 1868

Locality:

Link to MinDat.org Location Data.

Name Origin:

From the Greek, klineis - "to incline" and klas - "to break."

Name Pronunciation:

Clinoclase + Pronunciation

Synonym:

ICSD 68456

PDF 42-1357

Clinoclase Image

Images:

Clinoclase

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

Images:

Clinoclase

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/I_o): 3.587(1), 3.139(0.25), 7.21(0.2),

Forms:

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

Warning: this java applet does not work in some browsers because of security restrictions.

Physical Properties of Clinoclase

Color:

Dark verdigris green, Blackish blue green, Blackish green.

Optical Properties of Clinoclase

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

Electron Density:

Bulk Density (Electron Density)=4.10 gm/cc
note: Specific Gravity of Clinoclase =4.36 gm/cc.

Fermion Index:

Fermion Index = 0.0001424449
Boson Index = 0.9998575551

Photoelectric:

PE_Clinoclase= 35.98 barns/electron
U=PE_Clinoclase x rElectron Density= 147.59 barns/cc.

Radioactivity:

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

Clinoclase Classification

Dana Class:

41.03.01.01 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen

(41.03)where (A B)3 (XO4) Zq

(41.03.01)Clinoclase Group

41.03.01.01 Clinoclase Cu3(AsO4)(OH)3 P 2₁/a 2/m

41.03.01.02 Gilmarite! Cu3(AsO4)(OH)3 P1 1

41.03.01.03 Lapeyreite! Cu3O[AsO3(OH)]2•H2O C 2/m 2/m

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

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
17 - WWW-MINCRYST
18 - theimage

Search for Clinoclase using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Clinoclase :

Ask about Clinoclase here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Clinoclase

Cu3(AsO4)(OH)3
Dana No: 41.03.01.01 Strunz No: 08.BE.20
Locality:

Notes:

\n'; var printWin = window.open("","printSpecial", 'toolbar=n

Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.