Unnamed ([Ca-Ce]+[Fe3-Cr-Fe] member of the Epidote Supergroup)
This page is currently not sponsored. Click here to sponsor this page.
Formula:
(CaCe)(Fe3+Cr3+Fe2+)[SiO4][Si2O7]O(OH) or (CaCe)(Fe3+Cr3+Fe3+)[SiO4][Si2O7]OO
Member of:
Either the Cr-dominant analogue of ferriallanite-(Ce) (and then belonging to the Allanite Group) or a member of the Åskagenite Group. If the latter is true, the mineral stands for the CaCeFeFe-analogue of åskagenite-(Nd).
First epidote supergroup member with essential Cr to date.
Empirical formula: Ca1.00(Ce0.43La0.40Ca0.08Nd0.06Pr0.03)Σ1.00(Fe0.81Cr0.19)Σ1.00(Cr0.70Al0.30)Σ1.00 (Fe0.57Ti0.24Mg0.14Mn0.05)Σ1.00[(Si2.94Al0.06)Σ3.00O11](O,OН)2.
First epidote supergroup member with essential Cr to date.
Empirical formula: Ca1.00(Ce0.43La0.40Ca0.08Nd0.06Pr0.03)Σ1.00(Fe0.81Cr0.19)Σ1.00(Cr0.70Al0.30)Σ1.00 (Fe0.57Ti0.24Mg0.14Mn0.05)Σ1.00[(Si2.94Al0.06)Σ3.00O11](O,OН)2.
Unique Identifiers
Mindat ID:
53750
Long-form identifier:
mindat:1:1:53750:0
Chemistry of Unnamed ([Ca-Ce]+[Fe3-Cr-Fe] member of the Epidote Supergroup)
Mindat Formula:
(CaCe)(Fe3+Cr3+Fe2+)[SiO4][Si2O7]O(OH) or (CaCe)(Fe3+Cr3+Fe3+)[SiO4][Si2O7]OO
Element Weights:
Relationship of Unnamed ([Ca-Ce]+[Fe3-Cr-Fe] member of the Epidote Supergroup) to other Species
Member of:
Other Members of Epidote Supergroup:
| Allanite Group | (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH) | |
| Åskagenite Group | (A12+REE3+)(M13+M23+M33+)O[Si2O7][SiO4]O | |
| Dollaseite Group | (A12+REE3+)(M12+M23+M32+)F[Si2O7][SiO4](OH) | |
| Epidote Group | (A12+A22+)(M13+M23+M33+)O[Si2O7][SiO4](OH) | |
| 'Unnamed ([Ca-Ce]+[Al-Al-Mn] member of the Epidote Supergroup)' | (CaCe)(AlAlMn2+)O[Si2O7][SiO4](OH) or (CaCe)(AlAlMn3+)O[Si2O7][SiO4]O | |
| 'Unnamed ([Ca-La]+[Al-Al-Mn] member of the Epidote Supergroup)' | (CaLa)(AlAlMn2+)O[Si2O7][SiO4](OH) or (CaLa)(AlAlMn3+)O[Si2O7][SiO4]O | |
| 'Unnamed ([Ca-La]+[Fe3-Al-Mn] member of the Epidote Supergroup)' | (CaLa)(Fe3+AlMn2+)O[Si2O7][SiO4](OH) or (CaLa)(Fe3+AlMn3+)O[Si2O7][SiO4]O | |
| 'Unnamed ([Mn2-Ce]+[Al-Al-Mn] member of the Epidote Supergroup)' | (Mn2+Ce)(AlAlMn2+)O[Si2O7][SiO4](OH) or (Mn2+Ce)(AlAlMn3+)O[Si2O7][SiO4]O | |
| 'Unnamed ([Mn2-Nd]+[Al-Al-Mn] member of the Epidote Supergroup)' | (Mn2+Nd)(AlAlMn2+)O[Si2O7][SiO4](OH) or (Mn2+Nd)(AlAlMn3+)O[Si2O7][SiO4]O |
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 ([Ca-Ce]+[Fe3-Cr-Fe] member of the Epidote Supergroup)
mindat.org URL:
https://www.mindat.org/min-53750.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
Mineral Dealers:
References for Unnamed ([Ca-Ce]+[Fe3-Cr-Fe] member of the Epidote Supergroup)
Reference List:
Localities for Unnamed ([Ca-Ce]+[Fe3-Cr-Fe] member of the Epidote Supergroup)
Showing 1 localities.
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.
Russia | |
| Varlamov et al. (2019) +1 other reference |
