Browsing William S. Cordua, Ph.D by Author "Cordua, William S. (William Sinclair), 1947-"
Now showing items 1-20 of 89
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Agate hunters point way to an impact crater
Cordua, William S. (William Sinclair), 1947- (St. Croix Rockhounds, Stillwater, MN, 1998) -
Agates - Rich in fiber!
Cordua, William S. (William Sinclair), 1947- (St. Croix Rockhounds, Stillwater, MN, 1996) -
Are carbonado diamonds out of this world?
Cordua, William S. (William Sinclair), 1947- (St. Croix Rockhounds, Stillwater, MN, 2007) -
Arsenic and old sandstone
Cordua, William S. (William Sinclair), 1947- (St. Croix Rockhounds, Stillwater, MN, 1999) -
Bauxite and greenhouse earth
Cordua, William S. (William Sinclair), 1947- (St. Croix Rockhounds, Stillwater, MN, 2007) -
Blue, blue, my quartz is blue
Cordua, William S. (William Sinclair), 1947- (St. Croix Rockhounds, Stillwater, MN, 1995) -
Book review: Geology of the Lake Superior Region by Gene LaBerge, 1994, Geoscience Press.
Cordua, William S. (William Sinclair), 1947- (St. Croix Rockhounds, Stillwater, MN, 1994) -
Cave spar
Cordua, William S. (William Sinclair), 1947- (St. Croix Rockhounds, Stillwater, MN, 2002) -
Collecting trip to the Vulcan Materials Company Quarry, Racine, Wisconsin
Cordua, William S. (William Sinclair), 1947- (St. Croix Rockhounds, Stillwater, MN, 1997) -
Columnar joints
Cordua, William S. (William Sinclair), 1947- (St. Croix Rockhounds, Stillwater, MN, 1999) -
Cosmetic minerals of Ancient Egypt
Cordua, William S. (William Sinclair), 1947- (St. Croix Rockhounds, Stillwater, MN, 2000) -
Crystal diving for fluid inclusions
Cordua, William S. (William Sinclair), 1947- (St. Croix Rockhounds, Stillwater, MN, 1989) -
Deadly erionite
Cordua, William S. (William Sinclair), 1947- (St. Croix Rockhounds, Stillwater, MN, 1995) -
Dense as a rock
Cordua, William S. (William Sinclair), 1947- (St. Croix Rockhounds, Stillwater, MN, 2001) -
Determining the source of gem emeralds
Cordua, William S. (William Sinclair), 1947- (St. Croix Rockhounds, Stillwater, MN, 2001) -
Diamond-wrongs
Cordua, William S. (William Sinclair), 1947- (St. Croix Rockhounds, Stillwater, MN, 2008) -
Disorderly opal
Cordua, William S. (William Sinclair), 1947- (St. Croix Rockhounds, Stillwater, MN, 2003) -
Drifting Cuyuna tourmaline
Cordua, William S. (William Sinclair), 1947- (St. Croix Rockhounds, Stillwater, MN, 1999) -
Epidote
Cordua, William S. (William Sinclair), 1947- (St. Croix Rockhounds, Stillwater, MN, 1994) -
False forms
Cordua, William S. (William Sinclair), 1947- (St. Croix Rockhounds, Stillwater, MN, 1989)