Horsfordite Mineral Data + 
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- 2.1.2.1 Horsfordite Cu5Sb Unk Cubic
- II/A.01-10 Algodonite Cu6As P 63/mmc 6/m 2/m 2/m
- II/A.01-20 Domeykite Cu3As I 43d 4 3m
- II/A.01-30 Horsfordite Cu5Sb Unk Cubic
- II/A.01-40 Kutinaite Cu14Ag6As7 P m3m 4/m 3 2/m
- II/A.01-50 Koutekite Cu5As2 P 63/mmc 6/m 2/m 2/m
- II/A.01-60 Novakite (Cu,Ag)21As10 C 2/m ? 2/m
- II/A.01-70 Cuprostibite Cu2(Sb,Tl) P 4/nmm 4/m 2/m 2/m
General Horsfordite Information |
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 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. | ||
| IMA Status: |
Valid Species (Pre-IMA) 1888 | ||
| Locality: |
Mytilene, Lesbos Island, Greece. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for Eben N. Horsford, (1818-1893), U.S. chemist. | ||
Search for Horsfordite Images | |||
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Images:
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Horsfordite Crystallography |
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| Crystal System: |
IsometricSpace Group: Unk | ||
Physical Properties of Horsfordite |
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| Cleavage: |
None | ||
| Color: |
Gray, Silver white. | ||
| Density: |
8.8 | ||
| Diaphaniety: |
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 |
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| RL Color: |
Slightly cream colored to silver-blue and grayish white. | ||
Calculated Properties of Horsfordite |
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| Electron Density: |
relectron=7.87 gm/cc |
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| Fermion Index |
Fermion Index = 0 Boson Index = 1 |
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| Photoelectric: |
PEHorsfordite = 115.10 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Horsfordite is Not Radioactive |
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Horsfordite Classification |
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| Dana Class: |
2.1.2.1 (2)Sulfides - Including Selenides and Tellurides | ||
| (2.1)where Am Xp, with m:p>3:1 | |||
| (2.1.2)Dana Group | |||
| Strunz Class: |
II/A.01-30 II - Sulfides and sulphosalts | ||
| II/A - Alloys and alloylike compounds, with Copper, Silver, Gold and Nickel | |||
| II/A.01 - Algodonite - Cuprostibite series | |||
Other Horsfordite Information |
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| 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 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris Search for Horsfordite using: Visit our Advertisers for Horsfordite : Translate Horsfordite Mineral Data : Ask about Horsfordite here : Print or Cut-and-Paste your Horsfordite Specimen Label here :
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