Natural Minerals Group

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

# AS1210-AB



ElementWt % OxideWt %
O 27.64
Fe 24.12FeO 31.03
Fe 48.24Fe2O3 68.97

Sum100.0 Sum100.0

Crushed separated crystals

Locality unknown
This is a reflected light micrograph of polished, carbon coated crystals of magnetite. The identifying etched label, which is a feature of our standards, is invaluable for navigating in an electron beam instrument. This is a another useful standard which contains a high concentration of iron in an oxide matrix. Magnetite is so named because of its strong magnetism. The hardness of magnetite can be judged by the fact that the grains stand up above the polished surface of the mount, and its octahedral parting results in surface pitting.

Name Description SPI # Each
Magnetite SPI Supplies® Individual Mounted Microanalysis Standard Item AS1210-AB $
Magnetite SPI Supplies® Individual Loose Microanalysis Standard Item AS1215-AB $

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