| |
 |
Tolbachite Mineral Data
|
|
|
General Tolbachite Information
|
 Chemical Formula: |
CuCl2 |
| Composition: |
Molecular Weight = 134.45 gm |
| |
Copper 47.26 % Cu 59.16 % CuO |
| |
Chlorine 52.74 % Cl 52.74 % Cl |
| |
- % Cl -11.90 % -O=Cl2
|
| |
______ ______ |
| |
100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
CuCl2 |
| Environment: |
In fumaroles associated with melanothallite. Alters quickly to eriochalcite. |
| IMA Status: |
Approved IMA 1983 |
| Locality: |
Tolbachik volcano, Kamchatka, Russia. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the locality. |
| Name Pronunciation: |
Tolbachite + Pronunciation  |
| Synonym: |
ICSD 66645 |
| |
PDF 35-690 |
| |
Tolbachite Image |
|
Images:
|
|
Tolbachite
Comments: Small orange-brownish crystals of tolbachite.
Location: Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia.
Scale: Picture size 2.5 mm.
© Thomas Witzke / Abraxas-Verlag |
|
Tolbachite Crystallography
|
| Axial Ratios: |
a:b:c =2.0815:1:2.0604 |
| Cell Dimensions: |
a = 6.89, b = 3.31, c = 6.82, Z = 2; beta = 122.3° V = 131.47 Den(Calc)= 3.40 |
| Crystal System: |
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m |
| X Ray Diffraction: |
By Intensity(I/Io): 5.76(1), 2.915(0.35), 3.445(0.25), |
| |
Physical Properties of Tolbachite
|
| Cleavage: |
{001} Perfect |
| Color: |
Brown, Golden brown. |
| Density: |
3.42 |
| Diaphaneity: |
Opaque |
| Habit: |
Deliquescent - Crystals absorb water from the air and melt or otherwise deteriorate. |
| Habit: |
Fibrous - Crystals made up of fibers. |
| Habit: |
Mossy - Like moss in form or appearance. |
| |
Optical Properties of Tolbachite
|
| Optical Data: |
Biaxial (?) |
| Pleochroism (x): |
pale green. |
| Pleochroism (z): |
dark brown. |
| |
Calculated Properties of Tolbachite
|
| Electron Density: |
Bulk Density (Electron Density)=3.19 gm/cc
note: Specific Gravity of Tolbachite =3.40 gm/cc.
|
| Fermion Index: |
Fermion Index = 0
Boson Index = 1 |
| Photoelectric: |
PETolbachite = 24.79 barns/electron
U=PETolbachite x rElectron Density= 79.00 barns/cc.
|
| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Tolbachite is Not Radioactive |
| |
Tolbachite Classification
|
| Dana Class: |
09.02.08.02 (09)Anhydrous and Hydrated Halides |
| |
(09.02)where A (X)2 |
| |
(09.02.08)Dana Group |
| |
09.02.08.01 Eriochalcite CuCl2•2(H2O) Pbmn 2/m 2/m 2/m |
| |
09.02.08.02 Tolbachite CuCl2 C 2/m 2/m |
| Strunz Class: |
03.AB.05 03 - HALIDES |
| |
03.A - Simple Halides, Without H2O |
| |
03.AB -M:X = 1:2 |
| |
03.AB.05 Tolbachite CuCl2 C 2/m 2/m |
| |
Other Tolbachite Information
|
| References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8) |
| See Also: |
Links to other databases for Tolbachite :
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 Tolbachite using:
[AOL]
[Bing]
[Dog Pile]
[GeoScienceWorld]
[HotBot]
[Ixquick]
[Lycos]
[MAMMA]
[Scirus]
[Teoma]
[WebCrawler]
[Wikipedia]
[YAHOO]
Visit our Advertisers for Tolbachite :
Ask about Tolbachite 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 Tolbachite Specimen Label here :
|
Tolbachite
CuCl2
Dana No: 09.02.08.02 Strunz No: 03.AB.05
Locality:
Notes:
|
|
| |
| |
|
| |
Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.