| |
 |
Horsfordite Mineral Data
|
|
|
General Horsfordite Information
|
 Chemical Formula: |
Cu5Sb |
| Composition: |
Molecular Weight = 503.03 gm |
| |
Copper 75.80 % Cu |
| |
Antimony 24.20 % Sb |
| |
______ |
| |
100.00 % |
| Empirical Formula: |
Cu6Sb |
| Environment: |
A questionable species. Horsfordite (1888) is now considered a metallurgical product. |
| IMA Status: |
Discredited IMA 2006 - Valid Species (Pre-IMA) 1855 |
| Locality: |
Mytilene, Lesbos Island, Greece. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Eben N. Horsford, (1818-1893), U.S. chemist. |
| Name Pronunciation: |
Horsfordite + Pronunciation  |
| |
Horsfordite Crystallography
|
| Crystal System: |
Isometric Space Group: Unk |
| |
Physical Properties of Horsfordite
|
| Cleavage: |
None |
| Color: |
Gray, Silver white. |
| Density: |
8.8 |
| Diaphaneity: |
Opaque |
| Fracture: |
Brittle - Uneven - Very brittle fracture producing uneven fragments. |
| Habit: |
Massive - Uniformly indistinguishable crystals forming large masses. |
| Habit: |
Tarnishes - Freshly fractured surfaces form a surface oxidation film |
| Hardness: |
4-5 - Fluorite-Apatite |
| Luster: |
Metallic |
| Streak: |
silver white |
| |
Optical Properties of Horsfordite
|
| RL Color: |
Slightly cream colored to silver-blue and grayish white. |
| |
Calculated Properties of Horsfordite
|
| Electron Density: |
Bulk Density (Electron Density)=7.87 gm/cc
note: Specific Gravity of Horsfordite =8.80 gm/cc.
|
| Fermion Index: |
Fermion Index = 0
Boson Index = 1 |
| Photoelectric: |
PEHorsfordite = 115.10 barns/electron
U=PEHorsfordite x rElectron Density= 906.09 barns/cc.
|
| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Horsfordite is Not Radioactive |
| |
Horsfordite Classification
|
| Dana Class: |
02.01.02.01 (02)Sulfides - Including Selenides and Tellurides |
| |
(02.01)where Am Xp, with m:p>3:1 |
| |
(02.01.02)Dana Group |
| |
02.01.02.01 Horsfordite? Cu5Sb Unk Cubic |
| Strunz Class: |
02.XX.00 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
| |
02.X - Unclassified Strunz SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarse |
| |
02.XX -Antimonide |
| |
02.XX.00 Isochalcopyrite? Cu8Fe9S16 Unk Cubic |
| |
02.XX.00 Bayankhanite? Cu6HgS4 Unk Hex |
| |
02.XX.00 Bravoite? (Fe,Ni,Co)S2 P a3 2/m 3 |
| |
02.XX.00 Dzhezkazganite* (Pb,Cu,Rh)S2(?) P a3? 2/m 3 |
| |
02.XX.00 Dilithium* Li2Te P 222 2 2 2 |
| |
02.XX.00 Horobetsuite* (Bi,Sb)2S3 Pbnm 2/m 2/m 2/m |
| |
02.XX.00 Horsfordite? Cu5Sb Unk Cubic |
| |
02.XX.00 Kurilite? (Ag,Au)2(Te,Se,S) P m3n,P 43n Cubic |
| |
02.XX.00 Imgreite? NiTe P 63/mmc 6/m 2/m 2/m |
| |
02.XX.00 Matraite? ZnS R 3m 3m |
| |
02.XX.00 Iridisite* (Ir,Cu,Rh,Ni,Pt)S2 Unk Cubic |
| |
02.XX.00 Kitaibelite? Ag10PbBi30S51 Mono ? Mono |
| |
02.XX.00 Jeromite? As(S,Se)2 None |
| |
02.XX.00 Parajamesonite? Pb4FeSb6S14 Unk Ortho |
| |
02.XX.00 Volfsonite* Cu10CuFeFe2Sn3S16 P 42m-,P 4212 Tetra |
| |
02.XX.00 Prassoite Rh17S15(?) P m3m 4/m 3 2/m |
| |
02.XX.00 Sakharovaite? (Pb,Fe)(Bi,Sb)2S4 Mono |
| |
02.XX.00 Samaniite Cu2Fe5Ni2S8 P 41/mmm 4mm |
| |
02.XX.00 Tazieffite! Pb20Cd2(As,Bi)22S50Cl10 C 2/c 2/m |
| |
02.XX.00 Horomanite Fe6Ni3S8 P 4/mmm 4mm |
| |
Other Horsfordite Information
|
| References: |
NAME( Dana8) PHYS. PROP.(Ford32) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Horsfordite :
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 Horsfordite using:
[AOL]
[Bing]
[Dog Pile]
[GeoScienceWorld]
[HotBot]
[Ixquick]
[Lycos]
[MAMMA]
[Scirus]
[Teoma]
[WebCrawler]
[Wikipedia]
[YAHOO]
Visit our Advertisers for Horsfordite :
Ask about Horsfordite 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 Horsfordite Specimen Label here :
|
Horsfordite
Cu5Sb
Dana No: 02.01.02.01 Strunz No: 02.XX.00
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.