| |
 |
Cuprostibite Mineral Data
|
|
|
General Cuprostibite Information
|
 Chemical Formula: |
Cu2(Sb,Tl) |
| Composition: |
Molecular Weight = 265.37 gm |
| |
Thallium 15.40 % Tl |
| |
Copper 47.89 % Cu |
| |
Antimony 36.70 % Sb |
| |
______ |
| |
100.00 % |
| Empirical Formula: |
Cu2Sb0.8Tl0.2 |
| Environment: |
In a vein in sodalite syenite and in mineralized dolomite. |
| IMA Status: |
Approved IMA 1969 |
| Locality: |
Mt. Nakalak, near Narssaq, Greenland. Langban and Langsjon, Sweden. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the composition. |
| Synonym: |
ICSD 42323 |
| |
PDF 22-601 |
| |
Cuprostibite Image |
|
Images:
|
|
Cuprostibite Ussingite
Comments: Massive ussingite hosting grains of the very rare copper antimony-thallium bearing cuprostibite.
Location: Ilimaussaq, Tasseq, Greenland.
Scale: 4.8 x3.4 cm.
© John Veevaert |
|
Cuprostibite Crystallography
|
| Axial Ratios: |
a:c = 1:1.52631 |
| Cell Dimensions: |
a = 3.99, c = 6.09, Z = 2; V = 96.95 Den(Calc)= 9.09 |
| Crystal System: |
Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: P 4/nmm |
| X Ray Diffraction: |
By Intensity(I/Io): 2.07(1), 2.56(0.5), 2.82(0.4), |
| |
Physical Properties of Cuprostibite
|
| Cleavage: |
{???} Indistinct |
| Color: |
Steel gray. |
| Density: |
8.42 |
| Diaphaneity: |
Opaque |
| Fracture: |
Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. |
| Habit: |
Aggregates - Made of numerous individual crystals or clusters. |
| Hardness: |
4 - Fluorite |
| Luster: |
Metallic |
| |
Optical Properties of Cuprostibite
|
| RL Anisotrophism: |
Strong. |
| RL Color: |
Violet -rose. |
| RL Pleochroism: |
Creamy white to dark rose-violet. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Cuprostibite in Air
| λ |
R1 |
R2 |
 |
∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
56.00 |
60.80 |
|
|
|
| 420 nm |
54.90 |
59.40 |
|
| 440 nm |
53.80 |
58.00 |
|
| 460 nm |
51.10 |
55.10 |
|
| 480 nm |
48.70 |
52.80 |
|
| 500 nm |
46.40 |
50.50 |
|
| 520 nm |
42.90 |
48.30 |
|
| 540 nm |
38.70 |
45.50 |
|
| 560 nm |
36.70 |
43.90 |
|
| 580 nm |
37.90 |
44.00 |
|
| 600 nm |
42.20 |
45.90 |
|
| 620 nm |
47.60 |
48.60 |
|
| 640 nm |
52.90 |
51.90 |
|
| 660 nm |
57.70 |
54.50 |
|
| 680 nm |
61.30 |
56.90 |
|
| 700 nm |
65.00 |
57.60 |
|
Calculated Relative Intensity Colors of Cuprostibite in Air
Relative
Intensity |
0% |
30% |
60% |
90% |
100% |
120% |
150% |
180% |
210% |
| R1 |
|
|
|
|
|
|
|
|
|
| R2 |
|
|
|
|
|
|
|
|
|
|
| |
Calculated Properties of Cuprostibite
|
| Electron Density: |
Bulk Density (Electron Density)=7.88 gm/cc
note: Specific Gravity of Cuprostibite =9.09 gm/cc.
|
| Fermion Index: |
Fermion Index = 0
Boson Index = 1 |
| Photoelectric: |
PECuprostibite = 409.08 barns/electron
U=PECuprostibite x rElectron Density=3,222.96 barns/cc.
|
| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Cuprostibite is Not Radioactive |
| |
Cuprostibite Classification
|
| Dana Class: |
02.04.11.01 (02)Sulfides - Including Selenides and Tellurides |
| |
(02.04)where Am Bn Xp, with (m+n):p=2:1 |
| |
(02.04.11)Dana Group |
| |
02.04.11.01 Cuprostibite Cu2(Sb,Tl) P 4/nmm 4/m 2/m 2/m |
| Strunz Class: |
02.AA.20 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
| |
02.A - Simple Sulfides, Selenides, etc |
| |
02.AA -Alloys of metalloids with Cu, Ag, Sn, Au |
| |
02.AA.20 Cuprostibite Cu2(Sb,Tl) P 4/nmm 4/m 2/m 2/m |
| |
Other Cuprostibite Information
|
| References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Cuprostibite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Franklin Minerals(Dunn)
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info
Search for Cuprostibite using:
[AOL]
[Bing]
[Dog Pile]
[GeoScienceWorld]
[HotBot]
[Ixquick]
[Lycos]
[MAMMA]
[Scirus]
[Teoma]
[WebCrawler]
[Wikipedia]
[YAHOO]
Visit our Advertisers for Cuprostibite :
Ask about Cuprostibite 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 Cuprostibite Specimen Label here :
|
Cuprostibite
Cu2(Sb,Tl)
Dana No: 02.04.11.01 Strunz No: 02.AA.20
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.