UM2000-60-Si:Fe
Valid as an unnamed mineral
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Formula:
Fe3Si7
The phase "UM" name concerns material described from the Luobusa ophiolite, as subrounded grains, up to 0.5 mm, that may possess fritted margins.
The Fe3Si7 phase (probably the same) was much earlier described by Essene & Fisher (1986) as lath-like species intergrown with FeSi (naquite?), FeTiSi2 (possibly zangboite), and Unnamed (Ti Phosphide) within a metallic globule in glass of Winans Lake fulgurite.
Possibly the Si analogue of 'Unnamed (Fe phosphide-silicide I)'. One of a number of natural Fe-Si phases known; compare 'Unnamed (Fe silicide I)' and 'Unnamed (Fe silicide II)'.
Electron microprobe data (wt%):
Si 55.26
Fe 44.74
When normalized to 100 wt% it corresponds to Fe2.89Si7.11.
The Fe3Si7 phase (probably the same) was much earlier described by Essene & Fisher (1986) as lath-like species intergrown with FeSi (naquite?), FeTiSi2 (possibly zangboite), and Unnamed (Ti Phosphide) within a metallic globule in glass of Winans Lake fulgurite.
Possibly the Si analogue of 'Unnamed (Fe phosphide-silicide I)'. One of a number of natural Fe-Si phases known; compare 'Unnamed (Fe silicide I)' and 'Unnamed (Fe silicide II)'.
Electron microprobe data (wt%):
Si 55.26
Fe 44.74
When normalized to 100 wt% it corresponds to Fe2.89Si7.11.
Unique Identifiers
Mindat ID:
47572
Long-form identifier:
mindat:1:1:47572:3
Similar Names
| UM1971-02-AsO:Fe | Fe-As-O | |
| UM1979-03-AsO:Fe | FeAsO4 ? | |
| UM1979-04-AsO:Fe | FeAsO4 ? | |
| UM1988-20-SO:FeH | Fe2.67(SO4)2.14H2O | |
| UM1991-20-Si:Fe | Valid as an unnamed mineral | Fe5Si2 |
| UM1995-34-SO:Fe | FeS2O3 | |
| UM1997-14-AsO:FeH | Valid as an unnamed mineral | Fe-As-O-H |
| UM1997-15-AsO:FeH | Valid as an unnamed mineral | Fe-As-O-H |
| UM1997-43-S:Fe | Valid as an unnamed mineral | FeS3 |
| UM2007-30-S:Fe | Valid as an unnamed mineral | Fe3S2 |
IMA Classification of UM2000-60-Si:Fe
IMA status notes:
Unnamed (probably valid)
Chemistry of UM2000-60-Si:Fe
Mindat Formula:
Fe3Si7
Elements listed:
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 UM2000-60-Si:Fe
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https://www.mindat.org/min-47572.html
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References for UM2000-60-Si:Fe
Reference List:
Bai, W., Robinson, P. T., Fang, Q., Yang, J., Yan, B., Zhang, Z., Hu, X.-F., Zhou, M.-F., Malpas, J. (2000) The PGE and base-metal alloys in the podiform chromitites of the Luobusa ophiolite, southern Tibet. The Canadian Mineralogist, 38 (3). 585-598 doi:10.2113/gscanmin.38.3.585 In: Jambor, J.L., Roberts, A.C. (2001): New mineral names. American Mineralogist: 86: 199
Localities for UM2000-60-Si:Fe
Showing 2 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.
China | |
| Bai et al. (2000) +1 other reference |
USA | |
| Essene et al. (1986) |
