Ferristrunzite Fe+2Fe+32(PO4)2(OH)2.6H2O Triclinic

Ferristrunzite is a rare phosphate mineral formed by the alteration of other phosphates.

RUSK COUNTY: Ferristrunzite is found as bright yellow acicular crystals arranged in radial clusters in vugs and seams in massive cuprite/goethite with quartz at the Flambeau Mine, near Ladysmith. Verified by EDS and X-Ray analysis. (Buchholz, pers com.)

Calcite, Montreal, WI

Ferristrunzite, Flambeau Mine, Rusk County, WI. Fibers are about 0.7 mm. long. Dan Behnke photograph and specimen.

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