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Calcite Butler-Weddington mine, Karnes Uranium District, Karnes Co., Texas, USA 70mm height. Crystal 11mm on edge Champagne colored rhombs on matrix, from a concretion. You can see where the edge of the rhomb grew against the concretion. 70mm in height, with the crystal 11mm on edge. (Author: Paul Bordovsky)

Calcite
Butler-Weddington mine, Karnes Uranium District, Karnes Co., Texas, USA
70mm height. Crystal 11mm on edge

Champagne colored rhombs on matrix, from a concretion. You can see where the edge of the rhomb grew against the concretion. 70mm in height, with the crystal 11mm on edge. (Author: Paul Bordovsky)