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Now showing items 51-60 of 89
Two faces of jade
(St. Croix Rockhounds, Stillwater, MN, 1997)
Old lead mines of Southeastern Minnesota
(St. Croix Rockhounds, Stillwater, MN, 1988)
Moonmilk
(St. Croix Rockhounds, Stillwater, MN, 1993)
Mineral named after a continent
(St. Croix Rockhounds, Stillwater, MN, 1991)
Mellen "Black Granite"
(St. Croix Rockhounds, Stillwater, MN, 1995)
Peridot asteroid
(St. Croix Rockhounds, Stillwater, MN, 2000)
Placer gold from the St. Croix Dalles, Minnesota and Wisconsin
(St. Croix Rockhounds, Stillwater, MN, 1989)
What's in a vug?
(St. Croix Rockhounds, Stillwater, MN, 1988)
Kaali Meteorite catastrophe
(St. Croix Rockhounds, Stillwater, MN, 2002)
Pipestone voices
(St. Croix Rockhounds, Stillwater, MN, 1998)