DYOS Tool

Natural Minerals Group

From the standards library of SPI Supplies and the C. M. Taylor Company

# AS5560-AB

Andradite

(Ca,Fe2+)3(Fe3+Ti)2(Si,Al)3O12
ElementWt % OxideWt %
O 38.51
Mg 0.12MgO 0.20
Al 3.70Al2O3 6.98
Si 16.00SiO2 34.23
Ca 23.59CaO 33.01
Ti 0.14TiO2 0.23
Mn 0.39MnO 0.50
Fe 1.72FeO 2.22
Fe 15.82Fe2O3 22.62
Sum100.0 Sum100.0
Loose crystals of Andradite
Andradite crystal mounted and polished
Andradite is a garnet with the ideal end-member formula Ca3Fe3+2Si3O12 but several other rock-forming elements may be present, as the composition of this one shows. Locality: Marmora, Ontario, Canada
Name Description SPI # Each
Andradite SPI SuppliesŪ Individual Mounted Microanalysis Standard Item AS5560-AB $
Andradite SPI SuppliesŪ Individual Loose Microanalysis Standard Item AS5565-AB $
   
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