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Now showing items 1-10 of 23
Epidote
(St. Croix Rockhounds, Stillwater, MN, 1994)
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)
Wisconsin talc
(St. Croix Rockhounds, Stillwater, MN, 1993)
Lake full of lead
(St. Croix Rockhounds, Stillwater, MN, 1995)
Lazulite or Lazurite?
(St. Croix Rockhounds, Stillwater, MN, 1999)
Sick meteorites
(St. Croix Rockhounds, Stillwater, MN, 1995)
Deadly erionite
(St. Croix Rockhounds, Stillwater, MN, 1995)
Minerals from kidney stones
(St. Croix Rockhounds, Stillwater, MN, 1996)