Powell kyanite Deposit, Iron County, Wisconsin, USA
Hand specimen of schist composed of biotite, kyanite, almandine, quartz and plagioclase feldspar.
© William Cordua
Blue-green kyanite crystal in schist with almandine, biotite, plagioclase and quartz.
5 mm long euhedral yellow-green fluorapatite crystal with white plagioclase feldspar and brown biotite. The fluorapatite fluoresces yellow under SW UV light. The surrounding plagioclase fluoresces deep blue under SW UV light.
Road cut near Powell, Wisconsin exposing kyanite-bearing schist. Volvo is for scale.
© Bill Cordua