Claraite Mineral Data

(Translated by https://www.hiragana.jp/)
Claraite Mineral Data

General Claraite Information

Chemical Formula:

(Cu,Zn)3(CO3)(OH)4•4(H2O)

Composition:

Molecular Weight = 392.58 gm

Zinc 16.66 % Zn 20.73 % ZnO

Copper 32.37 % Cu 40.52 % CuO

Hydrogen 3.08 % H 27.53 % H₂O

Carbon 3.06 % C 11.21 % CO₂

Oxygen 44.83 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Cu₂Zn(CO₃)(OH)₄•4(H₂O)

Environment:

Secondary mineral.

IMA Status:

Approved IMA 1982

Locality:

Clara Mine, Black Forest, Wolfach, Schwarzwald, Baden-Württemberg, Germany. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Claraite Image

Images:

Claraite

Comments: Green, round spherical grain of claraite on fluorite.
Location: Clara Mine, Oberwolfach, Wolfach Valley, Black Forest, Baden-WÃ¼rttemberg, Germany. Scale: Picture size 1.5 mm.
© Thomas Witzke / Abraxas-Verlag

Claraite Crystallography

Axial Ratios:

a:b:c =1.7783:1:0.9053

Cell Dimensions:

a = 14.28, b = 8.03, c = 7.27, Z = 4; alpha = 79.16°, beta = 107.9°, gamma = 99.68° V = 768.04 Den(Calc)= 3.39

Crystal System:

TriclinicSpace Group: P1 or P1

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

By Intensity(I/I_o): 13.47(1)(100), 7.84(0.9)(010), 3.65(0.8)(120,021),2.96(0.6)(410,211,4115.17(0.6)(2

Physical Properties of Claraite

Cleavage:

{1010} Perfect

Color:

Blue.

Density:

3.35

Diaphaneity:

Transparent

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Fibrous - Crystals made up of fibers.

Habit:

Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)

Hardness:

2 - Gypsum

Luster:

Vitreous (Glassy)

Optical Properties of Claraite

Dichroism (e):

colorless or colorless.

Dichroism (w):

pale green or bluish green.

Gladstone-Dale:

CI meas= 0.048 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.054 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2071,KPDmeas= 0.2084,KC= 0.2189
Ncalc = 1.73 - 1.74

Optical Data:

Uniaxial (-), e=1.645, w=1.751, bire=0.1060.

Calculated Properties of Claraite

Electron Density:

Bulk Density (Electron Density)=3.31 gm/cc
note: Specific Gravity of Claraite =3.35 gm/cc.

Fermion Index:

Fermion Index = 0.0073854748
Boson Index = 0.9926145252

Photoelectric:

PE_Claraite= 21.99 barns/electron
U=PE_Claraite x rElectron Density= 72.80 barns/cc.

Radioactivity:

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

Claraite Classification

Dana Class:

16b.04.03.01 (16b)Carbonates - Hydroxyl or Halogen

(16b.04)where (A)m (B)n (XO3)p Zq · x(H2O), with (m+n):p=8:1

(16b.04.03)Dana Group

16b.04.03.01 Claraite (Cu,Zn)3(CO3)(OH)4•4(H2O) P1 or P1 Tri

Strunz Class:

05.DA.30 05 - CARBONATES (NITRATES)

05.D - Carbonates with Additional Anions, with H2O

05.DA -With medium-sized cations

05.DA.30 Claraite (Cu,Zn)3(CO3)(OH)4•4(H2O) P1 or P1 Tri

Other Claraite Information

References:

NAME( Dana8) PHYS. PROP.(AmMin, Vol 88, p 254) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Claraite :
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

Search for Claraite using:

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

Visit our Advertisers for Claraite :

A Bijoux Google Search for Claraite
Adam's Minerals Google Search for Claraite
Cape Minerals Google Search for Claraite
Dakota Matrix Minerals Google Search for Claraite
Excalibur Mineral Corp. Google Search for Claraite
Exceptional Minerals Google Search for Claraite
John Betts Fine Minerals Search for Claraite
McDougall Minerals Google Search for Claraite
Mineral News Website Link
Rock and Mineral Shows Google Search for Claraite
Weinrich Minerals, Inc. Google Search for Claraite

Ask about Claraite 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 Claraite Specimen Label here :

Claraite

(Cu,Zn)3(CO3)(OH)4•4(H2O)
Dana No: 16b.04.03.01 Strunz No: 05.DA.30
Locality:

Notes: