Paratacamite Mineral Data

Paratacamite Mineral Data
Search Webmineral :
   
Home Crystal jmol jPOWD Chem X Ray Dana Strunz Properties A to Z Images       News Help About



[New Updates] [Gallery 1] [Gallery 2] [Gallery 3] [Rock Shop Gallery]
Serving the mineral collector and educator community since 1970
Over 900,000 mineral specimens in stock
New minerals acquired weekly - Wright's Rock Shop


General Paratacamite Information

Help on Chemical Formula: Chemical Formula: (Cu,Zn)2(OH)3Cl
Help on Composition: Composition: Molecular Weight = 214.49 gm
   Zinc      15.24 %  Zn   18.97 % ZnO
   Copper    44.44 %  Cu   55.63 % CuO
   Hydrogen   1.41 %  H    12.60 % H2O
   Chlorine  16.53 %  Cl   16.53 % Cl
               -   %   Cl   -3.73 % -O=Cl2   
   Oxygen    22.38 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Cu1.5Zn0.5(OH)3Cl
Help on Environment: Environment: Alteration of copper minerals by chloride waters under cold conditions.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1873
Help on Locality: Locality: Generosa and Herminia mines, Sierra Gorda, Chile. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the dimorphous relationship with atacamite.
Help on Name Pronunciation: Name Pronunciation: Paratacamite + Pronunciation Say PARATACAMITE
Help on Synonym: Synonym: ICSD 64956
  PDF 25-325
 

Paratacamite Image

Click Here for Larger Paratacamite Image in a New Browser Window Images:
Click Here for Larger Paratacamite Image

Paratacamite   Christelite

Comments: Robins-egg blue christelite with dark green paratacamite on matrix.
Location: San Francisco mine, Sierra Gorda, Chile. Scale: 3 cm.
© John Veevaert
Click Here for Larger Paratacamite Image in a New Browser Window Images:
Click Here for Larger Paratacamite Image

Paratacamite

Comments: Deep green crystal paratacamite rosettes on rusty quartz.
Location: Churchill Butte, Lyon County, Nevada, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Paratacamite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:1.02834
Help on Cell Dimensions: Cell Dimensions: a = 13.654, c = 14.041, Z = 24; V = 2,266.98 Den(Calc)= 3.77
Help on Crystal System: Crystal System: Trigonal - RhombohedralH-M Symbol ( 3) Space Group: R 3
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 5.44(1), 2.27(0.8), 2.74(0.6),2.76(0.6), 2.78(0.5), 1.71(0.5), 2.9(0.3),
Click Here for Large Paratacamite Structure Window Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
 Help on Above


Fleet M E , Acta Crystallographica, Section B , 31 (1975) p.183-187, The crystal structure of paratacamite, Cu2(OH)3Cl, Sample: Ordered structure, considered to be the true structure

View Additional jPOWD Structure files for Paratacamite
[1] [2]
 

Physical Properties of Paratacamite

Help on Cleavage: Cleavage: {1011} Good
Help on Color: Color: Greenish black, Dark green.
Help on Density: Density: 3.74
Help on Diaphaneity: Diaphaneity: Translucent to Subopaque
Help on Fracture: Fracture: Conchoidal - Uneven - Uneven fracture producing small, conchoidal fragments.
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Habit: Habit: Massive - Granular - Common texture observed in granite and other igneous rock.
Help on Habit: Habit: Rhombohedral Crystals - Occurs as well-formed crystals showing rhobohedral crystals.
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Vitreous - Dull
Help on Streak: Streak: light green
 

Optical Properties of Paratacamite

Help on Dichroism (e): Dichroism (e): none.
Help on Dichroism (w): Dichroism (w): none.
Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.029 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.021 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2243,KPDmeas= 0.2261,KC= 0.2196
Ncalc = 1.82 - 1.83
Help on Optical Data: Optical Data: Uniaxial (+), w=1.843, e=1.848, bire=0.0050.
 

Calculated Properties of Paratacamite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.60 gm/cc
note: Specific Gravity of Paratacamite =3.77 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0063592515
Boson Index = 0.9936407485
Help on Photoelectric: Photoelectric: PEParatacamite = 28.34 barns/electron
U=PEParatacamite x rElectron Density= 102.10 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Paratacamite is Not Radioactive
 

Paratacamite Classification
Help on Dana Class: Dana Class: 10.01.02.01 (10)Oxyhalides and Hydroxyhalides
  (10.01)where (A)2 (O,OH)3 Xq
  (10.01.02)Paratacamite Group
 
10.01.02.01 Paratacamite (Cu,Zn)2(OH)3Cl R 3 3
 
10.01.02.02 Clinoatacamite! Cu2(OH)3Cl P 21/n 2/m
 
10.01.02.03 Herbertsmithite! Cu3Zn(OH)6Cl2 R 3m 3 2/m
 
10.01.02.04 Kapellasite! Cu3Zn(OH)6Cl2 P 3m1 3 2/m
Help on Strunz Class: Strunz Class: 03.DA.10c 03 - HALIDES
  03.D - Oxyhalides, Hydroxyhalides and Related Double Halides
  03.DA -With Cu, etc., without Pb
 
03.DA.10c Paratacamite (Cu,Zn)2(OH)3Cl R 3 3
 
03.DA.10c Gillardite! Cu3NiCl2(OH)6 R 3m 3
 
03.DA.10c Herbertsmithite! Cu3Zn(OH)6Cl2 R 3m 3 2/m
 
03.DA.10c Kapellasite! Cu3Zn(OH)6Cl2 P 3m1 3 2/m
 
03.DA.10c Haydeeite! Cu3Mg(OH)6Cl2 R 3m 3
 

Other Paratacamite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(AntBidBlaNic3) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Paratacamite :
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

Search for Paratacamite using:

Google
 
Web webmineral.com
[ALTAVISTA] [AOL] [bing] [GeoScienceWorld] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Paratacamite :

B & L Fine Minerals

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Excalibur Minerals

Exceptional Minerals

Fabre Minerals

John Betts Fine Minerals

Lapis Mineral Journal

Mineral News

UV Tools

Wrights Rock Shop

Translate Paratacamite Mineral Data :

Ask about Paratacamite 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 Espaņol

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

Paratacamite

(Cu,Zn)2(OH)3Cl
Dana No: 10.01.02.01 Strunz No: 03.DA.10c
Locality:

 

Notes: