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Unnamed ([Mn2-Nd]+[Al-Al-Mn] member of the Epidote Supergroup)

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Formula:
(Mn2+Nd)(AlAlMn2+)O[Si2O7][SiO4](OH) or (Mn2+Nd)(AlAlMn3+)O[Si2O7][SiO4]O
Either the Mn2+-dominant analogue of "uedaite-(Nd)" (and then belonging to the Allanite Group) or a member of the Åskagenite Group. If the latter is true, the mineral stands for the Mn3+-analogue of åskagenite-(Nd).

Empirical formula: (Mn0.55Ca0.45)Σ1.00(Nd0.25Ce0.24La0.24Ca0.15Pr0.07Sm0.02Gd0.02)Σ0.99(Al0.72Fe0.28)Σ1.00Al1.00(Mn0.55Fe0.28Mg0.17)Σ1.00[Si3.01O11](O,OH)2.


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Unique IdentifiersHide

Mindat ID:
53753
Long-form identifier:
mindat:1:1:53753:7

Chemistry of Unnamed ([Mn2-Nd]+[Al-Al-Mn] member of the Epidote Supergroup)Hide

Mindat Formula:
(Mn2+Nd)(AlAlMn2+)O[Si2O7][SiO4](OH) or (Mn2+Nd)(AlAlMn3+)O[Si2O7][SiO4]O
Element Weights:
Element% weight
O34.617 %
Nd24.007 %
Mn18.287 %
Si14.023 %
Al8.981 %
H0.084 %

Calculated from ideal end-member formula.
Elements listed:
Al, H, Mn, Nd, O, Si - search for minerals with similar chemistry

Relationship of Unnamed ([Mn2-Nd]+[Al-Al-Mn] member of the Epidote Supergroup) to other SpeciesHide

Member of:
Epidote Supergroup
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-Ce]+[Fe3-Cr-Fe] member of the Epidote Supergroup)'(CaCe)(Fe3+Cr3+Fe2+)[SiO4][Si2O7]O(OH) or (CaCe)(Fe3+Cr3+Fe3+)[SiO4][Si2O7]OO
'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

Other InformationHide

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 ([Mn2-Nd]+[Al-Al-Mn] member of the Epidote Supergroup)Hide

References for Unnamed ([Mn2-Nd]+[Al-Al-Mn] member of the Epidote Supergroup)Hide

Localities for Unnamed ([Mn2-Nd]+[Al-Al-Mn] member of the Epidote Supergroup)Hide

Showing 1 localities.

ⓘ - 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). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Russia
 
  • Komi Republic
    • Kozhim River Basin
      • Maldynyrd range (Maldy-nyrd range)
Varlamov et al. (2019)
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