COOKEITE LiAl4(Si3Al)O10(OH)8 Monoclinic

Description: Cookeite is a rare alteration product of other lithium minerals found in complex granitic pegmatites.

MARATHON COUNTY: White micaceous material found in a pocket in a pegmatites in the Wausau pluton, has been tentatively identified as cookeite by Falster (1987).

Return to Wisconsin Mineral List