Chalcopyrite-Eskebornite Series
A solid-solution series between two end-member minerals
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About Chalcopyrite-Eskebornite Series
Crystal System:
Tetragonal
Series Formula:
CuFeS2 to CuFeSe2
Unique Identifiers
Mindat ID:
8734
Long-form identifier:
mindat:1:1:8734:2
Age distribution
Recorded ages:
Phanerozoic : 299.7 ± 1.8 Ma to 57 Ma - based on 10 recorded ages.
Sample ages:
| Sample ID | Recorded age | Geologic Time | Dating method |
|---|---|---|---|
| 1 | 57 Ma | Paleocene | K-Ar |
| 2 | 57 Ma | Paleocene | K-Ar |
| 3 | 211 Ma | Late/Upper Triassic | K-Ar |
| 4 | 228.7 ± 1.4 Ma | Late/Upper Triassic | Re-Os |
| 5 | 229.9 ± 1.7 Ma | Late/Upper Triassic | Re-Os |
| 6 | 275.2 ± 4.2 Ma | Cisuralian | Re-Os |
| 7 | 299.7 ± 1.8 Ma | Pennsylvanian | Re-Os |
Sample references:
Chemical Analysis
Oxide wt%:
| 1 | |
|---|---|
| Fe | 30.45 % |
| Cu | 33.46 % |
| S | 33.46 % |
| Total: | 97.37 % |
wt%
| 2 | 3 | |
|---|---|---|
| Cu | 23.0 % | 23.62 % |
| Fe | 19.7 % | 19.75 % |
| Se | 57.5 % | 55.96 % |
| Total: | 100.2 % | 99.33 % |
Empirical formulas:
| Sample ID | Empirical Formula |
|---|---|
| 2 | Cu0.99Fe0.97Se2.00 |
| 3 | Cu1.06Fe1.01Se2.00 |
Sample references:
| ID | Locality | Reference | Notes |
|---|---|---|---|
| 1 | Kudremukh, Western Ghat region, Chikkamagaluru District, Karnataka, India | EMPA analysis of chalkopyrite found in association with a BIF. | |
| 2 | Eagle Claims U-Cu-Se occurrence, Beaverlodge Lake area, Saskatchewan, Canada | EMPA analysis of 200 micron grain embedded in and partly replaced by umangite. | |
| 3 | Martin Lake mine, Beaverlodge Lake area, Saskatchewan, Canada | EMPA analysis of a ca 100 micron grain in umangite. |
Crystallography of Chalcopyrite-Eskebornite Series
Crystal System:
Tetragonal
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0014365 | Eskebornite | Delgado J M, Diaz de Delgado G, Quintero M, Woolley J C (1992) The crystal structure of copper iron selenide, CuFeSe2 Materials Research Bulletin 27 367-373 | 1992 | synthetic | 0 | 293 | |
| 0018622 | Chalcopyrite | Knight K S, Marshall W G, Zochowski S W (2011) The low-temperature and high-pressure thermoelastic and structural properties of chalcopyrite, CuFeS2 The Canadian Mineralogist 49 1015-1034 | 2011 | Palabora mine, South Africa | 0 | 300 | |
| 0018623 | Chalcopyrite | Knight K S, Marshall W G, Zochowski S W (2011) The low-temperature and high-pressure thermoelastic and structural properties of chalcopyrite, CuFeS2 The Canadian Mineralogist 49 1015-1034 | 2011 | Palabora mine, South Africa | 0 | 4.2 | |
| 0009476 | Chalcopyrite | Hall S R, Stewart J M (1973) The crystal structure refinement of chalcopyrite, CuFeS2 Acta Crystallographica B29 579-585 |  | 1973 | 0 | 293 | |
| 0017661 | Chalcopyrite | Pauling L, Brockway L (1932) The Crystal Structure of Chalkopyrite Cu Fe S2 _cod_database_code 1010940 Zeitschrift fur Kristallographie 82 188-194 | 1932 | 0 | 293 | ||
| 0017651 | Chalcopyrite | Burdick C, Ellis J (1917) The Crystal Structure of Chalcopyrite Determined by X-Rays _cod_database_code 1010929 Journal of the American Chemical Society 39 2519-2525 | 1917 | 0 | 293 |
CIF Raw Data - click here to close
Common Associates
Associations Based on Photo Data:
| 3 photos of Chalcopyrite-Eskebornite Series associated with Clausthalite | PbSe |
| 3 photos of Chalcopyrite-Eskebornite Series associated with Calcite | CaCO3 |
| 2 photos of Chalcopyrite-Eskebornite Series associated with Hakite-(Hg) | Cu6(Cu4Hg2)Sb4Se12Se |
| 2 photos of Chalcopyrite-Eskebornite Series associated with Berzelianite | Cu2-xSe (x ≈ 0.12) |
| 2 photos of Chalcopyrite-Eskebornite Series associated with Tiemannite | HgSe |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Chalcopyrite-Eskebornite Series in petrology
An essential component of rock names highlighted in red, an accessory component in rock names highlighted in green.
Internet Links for Chalcopyrite-Eskebornite Series
mindat.org URL:
https://www.mindat.org/min-8734.html
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References for Chalcopyrite-Eskebornite Series
Reference List:
Significant localities for Chalcopyrite-Eskebornite Series
Showing 37 significant localities out of 34,446 recorded on mindat.org.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Australia | |
| [Chalcopyrite] CuDECO |
| [Chalcopyrite] RB94/00041 +1 other reference |
Bolivia | |
| [Chalcopyrite] Petrov (n.d.) |
Bulgaria | |
| [Chalcopyrite] King et al. (1989) |
Canada | |
| [Chalcopyrite] Oscar Jose Tessari (1979) |
China | |
| [Chalcopyrite] Jingye Jiang et al. (1998) +1 other reference |
France | |
| [Chalcopyrite] Dana 7:I:222. |
| [Chalcopyrite] Alain Steinmetz and Thierry Brunsperger ... |
Germany | |
| [Chalcopyrite] Mineralogical Collection of the ... |
| [Eskebornite] Johan (1988) |
Ireland | |
| [Chalcopyrite] Flannery (n.d.) +2 other references |
Italy | |
| [Chalcopyrite] Bonazzi et al. (1992) |
Kazakhstan | |
| [Chalcopyrite] RWMW specimen +2 other references |
Kosovo | |
| [Chalcopyrite] Féraud J. (1979) +5 other references |
Mexico | |
| [Chalcopyrite] Panczner (1987) |
Peru | |
| [Chalcopyrite] - (1997) +2 other references |
| [Chalcopyrite] Imai et al. (1985) +2 other references |
| [Chalcopyrite] - (1997) |
| [Chalcopyrite] Crowley et al. (1997) |
| [Chalcopyrite] - (1997) +1 other reference |
| [Chalcopyrite] Crowley et al. (1997) +3 other references |
Romania | |
| [Chalcopyrite] Mineral News 14:12 p 1 |
Russia | |
| [Chalcopyrite] Dobovol'skaya et al. (1990) +3 other references |
Spain | |
| [Chalcopyrite] Calvo Rebollar (2003) |
| [Chalcopyrite] Calvo Rebollar (2003) +2 other references |
| [Chalcopyrite] Victor Pais Collection |
UK | |
| [Chalcopyrite var: Blistered Copper] |
| [Chalcopyrite] Henwood (1843) +4 other references |
USA | |
| [Chalcopyrite, Chalcopyrite var: Blistered Copper] Jones (2001) |
| [Chalcopyrite] Rocks and Minerals Magazine Vol. 69 No. 4 (jul/aug 1994) +1 other reference |
| [Chalcopyrite] Rocks & Min.: 22&26. +5 other references |
| [Chalcopyrite] M Massis collection +1 other reference |
| [Chalcopyrite] Dana 7:I:592. +1 other reference |
| [Chalcopyrite] Koschmann et al. (1968) |
| [Chalcopyrite] Rocks & Min.:64:7. +1 other reference |
| [Chalcopyrite] Eric He's Collection |
Tincroft Mine, Pool, Carn Brea, Cornwall, England, UK