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composition range [Mg,Fe,Mn]3Al2(SiO4)3; and uvarovite-grossular-andradite (
ugrandite), with the
composition range Ca3[Cr,Al,Fe]2(SiO4)3. The word
garnet comes...
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Russian statesman and
amateur mineral collector. It is
classified in the
ugrandite group alongside the
other calcium-bearing
garnets andradite and grossular...
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Gahnite Gahnospinel Garnet group:
Pyralspite Almandine Pyrope Spessartine Ugrandite Andradite Demantoid Melanite Topazolite Grossular Hessonite Hydrogrossular...
- (Mg3Al2(SiO4)3),
almandine (Fe3Al2(SiO4)3), and
spessartine (Mn3Al2(SiO4)3). The
ugrandite garnets have Ca2+ in the X position:
uvarovite (Ca3Cr2(SiO4)3), grossular...
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Majorite Mg3(Fe,Al,Si)2(SiO4)3,
Calderite (Mn2+,Ca)3(Fe3+,Al)2(SiO4)3
Ugrandite series Andradite Ca3(Fe3+)2(SiO4)3,
Grossular Ca3Al2(SiO4)3, Uvarovite...
