UM2005-16-O:CaFe
Valid as an unnamed mineral
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Formula:
CaFe4O7
Colour:
Grey
Lustre:
Metallic
Crystal System:
Trigonal
Sometimes called "grandiferrite".
A substance of anthropogenic origin (burning coal mine dump). Current IMA regulations do not allow such substances to be approved as valid mineral species.
Originates, along with hematite, during decomposition of superferrite.
Magnetic.
See also Unnamed (Mg analogue of grandiferrite) and Unnamed (Fe(II)-dominant analogue of grandiferrite).
A substance of anthropogenic origin (burning coal mine dump). Current IMA regulations do not allow such substances to be approved as valid mineral species.
Originates, along with hematite, during decomposition of superferrite.
Magnetic.
See also Unnamed (Mg analogue of grandiferrite) and Unnamed (Fe(II)-dominant analogue of grandiferrite).
Unique Identifiers
Mindat ID:
32130
Long-form identifier:
mindat:1:1:32130:7
Similar Names
| UM1983-05-E:CoFe | Fe2Co | |
| UM2000-22-O:AgFeH | Valid as an unnamed mineral | ~Ag4Fe9O16 · 8H2O |
| UM2003-10-O:CrFe | A synonym of Xieite | Fe2+Cr2O4 |
| UM2003-11-O:CrFe | A synonym of Chenmingite | FeCr2O4 |
| UM2005-15-O:BaFe | A synonym of Barioferrite | BaFe123+O19 |
IMA Classification of UM2005-16-O:CaFe
IMA status notes:
Unnamed (probably valid)
Approval history:
Unnamed, but probably valid.
Physical Properties of UM2005-16-O:CaFe
Chemistry of UM2005-16-O:CaFe
Mindat Formula:
CaFe4O7
Element Weights:
Elements listed:
Crystallography of UM2005-16-O:CaFe
Crystal System:
Trigonal
Synonyms of UM2005-16-O:CaFe
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.
Internet Links for UM2005-16-O:CaFe
mindat.org URL:
https://www.mindat.org/min-32130.html
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References for UM2005-16-O:CaFe
Localities for UM2005-16-O:CaFe
Showing 7 localities.
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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.
Czech Republic | |
| Žáček et al. (2005) |
France | |
| publication date: November 2018 +1 other reference |
Poland | |
| Ł. Kruszewski EPMA/PXRD data +1 other reference |
| Ł. Kruszewski PXRD and EPMA data |
Russia | |
| Cesnokov et al. (1998) |
| Pekov (1998) | |
| Exotic Minerals of Russia. |
