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Now showing items 1-10 of 38
Epidote
(St. Croix Rockhounds, Stillwater, MN, 1994)
Minerals of the Lynne Deposit, Oneida County, Wisconsin
(St. Croix Rockhounds, Stillwater, MN, 1991)
Silicon, Silica, Silicates and Silicone
(St. Croix Rockhounds, Stillwater, MN, 1998)
Blue, blue, my quartz is blue
(St. Croix Rockhounds, Stillwater, MN, 1995)
Drifting Cuyuna tourmaline
(St. Croix Rockhounds, Stillwater, MN, 1999)
Why pyrite crystals have different shapes
(St. Croix Rockhounds, Stillwater, MN, 1994)
Wisconsin talc
(St. Croix Rockhounds, Stillwater, MN, 1993)
Minnesotaite
(St. Croix Rockhounds, Stillwater, MN, 1990)
Lake full of lead
(St. Croix Rockhounds, Stillwater, MN, 1995)
Minnesota kimberlites
(St. Croix Rockhounds, Stillwater, MN, 1991)