|
|
Melanothallite Mineral Data
|
|
|
General Melanothallite Information
|
Chemical Formula: |
Cu2OCl2 |
Composition: |
Molecular Weight = 214.00 gm |
|
Copper 59.39 % Cu 74.34 % CuO |
|
Chlorine 33.13 % Cl 33.13 % Cl |
|
- %
Cl -7.48 % -O=Cl2 |
|
Oxygen 7.48 % O |
|
______ ______ |
|
100.00 % 100.00 % = TOTAL OXIDE |
Empirical Formula: |
Cu2OCl2 |
Environment: |
Sublimed on crater walls formed in 1868 and 1906. |
IMA Status: |
Valid Species (Pre-IMA) 1870 |
Locality: |
Vesuvius, Campania, Italy. Link to MinDat.org Location Data. |
Name Origin: |
Named from the Greek for black and a young shoot, for the mineral�s property of turning green on exposure. |
Name Pronunciation: |
Melanothallite + Pronunciation |
Synonym: |
ICSD 1055 |
|
PDF 35-679 |
|
Melanothallite Image |
Images:
|
|
Images:
|
|
Melanothallite Crystallography
|
Axial Ratios: |
a:b:c =0.9898:1:0.7697 |
Cell Dimensions: |
a = 9.595, b = 9.693, c = 7.461, Z = 8; V = 693.91 Den(Calc)= 4.10 |
Crystal System: |
Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: F ddd |
X Ray Diffraction: |
By Intensity(I/Io): 5.041(1), 2.518(0.77), 2.947(0.44), |
|
Physical Properties of Melanothallite
|
Cleavage: |
{???} Perfect |
Color: |
Bluish black, Greenish black, Black. |
Density: |
4.08 |
Luster: |
Vitreous (Glassy) |
|
Calculated Properties of Melanothallite
|
Electron Density: |
Bulk Density (Electron Density)=3.83 gm/cc note: Specific Gravity of Melanothallite =4.10 gm/cc. |
Fermion Index: |
Fermion Index = 0.000035887 Boson Index = 0.999964113 |
Photoelectric: |
PEMelanothallite = 28.99 barns/electron U=PEMelanothallite x rElectron Density= 111.09 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Melanothallite is Not Radioactive |
|
Melanothallite Classification
|
Dana Class: |
10.04.04.01 (10)Oxyhalides and Hydroxyhalides |
|
(10.04)where (A)2 (O,OH) Xq |
|
(10.04.04)Dana Group |
|
10.04.04.01 Melanothallite Cu2OCl2 F ddd 2/m 2/m 2/m |
Strunz Class: |
03.DA.05 03 - HALIDES |
|
03.D - Oxyhalides, Hydroxyhalides and Related Double Halides |
|
03.DA -With Cu, etc., without Pb |
|
03.DA.05 Melanothallite Cu2OCl2 F ddd 2/m 2/m 2/m |
|
Other Melanothallite Information
|
References: |
NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) |
See Also: |
Links to other databases for Melanothallite :
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 Melanothallite using:
[AOL]
[Bing]
[Dog Pile]
[GeoScienceWorld]
[HotBot]
[Ixquick]
[Lycos]
[MAMMA]
[Scirus]
[Teoma]
[WebCrawler]
[Wikipedia]
[YAHOO]
Visit our Advertisers for Melanothallite :
Ask about Melanothallite 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
Espa�ol
Print or Cut-and-Paste your Melanothallite Specimen Label here :
Melanothallite
Cu2OCl2
Dana No: 10.04.04.01 Strunz No: 03.DA.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.