Unnamed (Fe3+-analogue of Piemontite-(Sr))
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About Unnamed (Fe3+-analogue of Piemontite-(Sr))
Formula:
(CaSr)(Fe3+AlMn3+)O[Si2O7][SiO4](OH)
Member of:
Found as grains up to 1 mm in a metamorphosed manganese mineralization (Kolitsch et al., 2021). Some grains are very close to the end-member composition, and some contain a Pb-rich rim. A crystal structure determination is under way.
Unique Identifiers
Mindat ID:
55291
Long-form identifier:
mindat:1:1:55291:6
Chemistry of Unnamed (Fe3+-analogue of Piemontite-(Sr))
Mindat Formula:
(CaSr)(Fe3+AlMn3+)O[Si2O7][SiO4](OH)
Element Weights:
Relationship of Unnamed (Fe3+-analogue of Piemontite-(Sr)) to other Species
Member of:
Other Members of Epidote Group:
| Clinozoisite | (CaCa)(AlAlAl)O[Si2O7][SiO4](OH) | Mon. 2/m : P21/m |
| Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) | Mon. 2/m : P21/m |
| Epidote-(Sr) | (CaSr)(AlAlFe3+)O[Si2O7][SiO4](OH) | Mon. 2/m : P21/m |
| Hancockite | (CaPb)(AlAlFe3+)O[Si2O7][SiO4](OH) | Mon. 2/m : P21/m |
| Heflikite | (CaCa)(AlAlSc)O[Si2O7][SiO4](OH) | Mon. 2/m : P21/m |
| Mukhinite | (CaCa)(AlAlV3+)O[Si2O7][SiO4](OH) | Mon. |
| Niigataite | (CaSr)(AlAlAl)O[Si2O7][SiO4](OH) | Mon. 2/m : P21/m |
| Piemontite | (CaCa)(AlAlMn3+)O[Si2O7][SiO4](OH) | Mon. 2/m : P21/m |
| Piemontite-(Pb) | (CaPb)(AlAlMn3+)O[Si2O7][SiO4](OH) | Mon. 2/m : P21/m |
| Piemontite-(Sr) | (CaSr)(AlAlMn3+)O[Si2O7][SiO4](OH) | Mon. 2/m : P21/m |
| Tweddillite | (CaSr)(Mn3+AlMn3+)O[Si2O7][SiO4](OH) | Mon. 2/m : P21/m |
| Unnamed (Fe3+ analogue of Piemontite-(Pb)) | (CaPb)(Fe3+AlMn3+)O[Si2O7][SiO4](OH) | |
| Unnamed (Fe3+-analogue of Piemontite) | (CaCa)(Fe3+AlMn3+)O[Si2O7][SiO4](OH) | |
| Unnamed (Ga-analogue of Epidote) | (CaCa)(AlAlGa3+)O[Si2O7][SiO4](OH) |
Common Associates
Associated Minerals Based on Photo Data:
| 2 photos of Unnamed (Fe3+-analogue of Piemontite-(Sr)) associated with Rhodochrosite | MnCO3 |
| 2 photos of Unnamed (Fe3+-analogue of Piemontite-(Sr)) associated with Albite | Na(AlSi3O8) |
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 Unnamed (Fe3+-analogue of Piemontite-(Sr))
mindat.org URL:
https://www.mindat.org/min-55291.html
Please feel free to link to this page.
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Search Engines:
References for Unnamed (Fe3+-analogue of Piemontite-(Sr))
Localities for Unnamed (Fe3+-analogue of Piemontite-(Sr))
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.
Austria | |
| Kolitsch et al. (2021) |
Fuchs Alp - Fuchs lake area, Tweng, Tamsweg District, Salzburg, Austria