Now showing items 10-29 of 90

    • Columnar joints 

      Cordua, William S. (William Sinclair), 1947- (St. Croix Rockhounds, Stillwater, MN, 1999)
    • Continents in collision 

      Williams, Ian Stephen (2006-04)
      Continents in collision is a graphic textbook that is intended to be an introduction to geology. Continents in collision was created in April 2006 by Professor Ian Williams, University of Wisconsin-River Falls, as a ...
    • 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)
    • Feeling minerals 

      Cordua, William S. (William Sinclair), 1947- (St. Croix Rockhounds, Stillwater, MN, 2000)
    • Field spar 

      Cordua, William S. (William Sinclair), 1947- (St. Croix Rockhounds, Stillwater, MN, 2004)
    • Fire of opal 

      Cordua, William S. (William Sinclair), 1947- (St. Croix Rockhounds, Stillwater, MN, 1993)
    • Floating copper 

      Cordua, William S. (William Sinclair), 1947- (St. Croix Rockhounds, Stillwater, MN, 1997)
    • Geology and the growth of downtown Stillwater 

      Cordua, William S. (William Sinclair), 1947- (St. Croix Rockhounds, Stillwater, MN, 1993)
    • Graphic granite 

      Cordua, William S. (William Sinclair), 1947- (St. Croix Rockhounds, Stillwater, MN, 2008)
    • Green rust and invisible gold 

      Cordua, William S. (William Sinclair), 1947- (St. Croix Rockhounds, Stillwater, MN, 2004)
    • Greenstones, greenstones and green stones 

      Cordua, William S. (William Sinclair), 1947- (St. Croix Rockhounds, Stillwater, MN, 2004)