SPESSARTINE Mn3Al2(SiO4)3 Isometric

Description: Speesartine is a member of the garnet family. It is usually red to orange in color and is found generally in granite pegmatites, where it can form large gemmy crystals. It is also found in metamorphic rocks formed from manganese-rich protoliths.

FLORENCE COUNTY: Subhedral red crystals of spessartine occur as grains up to 1.4 cm in diameter in a zoned pegmatite in the NE NE sec. 22 T.39N. R.17E. Associated minerals are albite var. cleavelandite, quartz, microcline and zinnwaldite. (Koehler, 1989, pers comm.).

RUSK COUNTY: Spessartine occurs as small dodecahedral porphyroblasts in chlorite schist at the Flambeau Mine, Sec. 9 T.34N. R.6W. (May, 1977).

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