Sweetwater Mine, Viburnum Trend District, Reynolds Co., Missouri, USA - Showy purple to blue iridescent crystals of chalcopyrite to 0.3 cm in size scattered over this shapely 7.5 x 6.0 x 3.5 cm white dolomite crystal coated breccia matrix. Micro-chipping present but sparse, I think this in good condition.

Sweetwater Mine, Viburnum Trend District, Reynolds Co., Missouri, USA - Very nice cluster of terminated calcite crystals on a coat of tiny dolomites and chalcopyrites. The calcite are all terminated and 2.5-3.5 cm in size. Overall size is 8x2.5x1.8 cm

Sweetwater Mine, Viburnum Trend District, Reynolds Co., Missouri, USA - Well shaped bi-terminated calcite crystal of 3.7 cm stands on this matrix coated by dolomite and chalcopyrite crystals. Nice rock of 8x3.7x1.8 cm

HUONGHUANG, HUNAN PROV., CHINA - Terminated deep red crystals crystals of cinnabar show up on this dolomite specimen. There 2 cinnabars up to 0.8 and 1 cm on the edge, no damage ! Overall size is 6.5x4x3 cm.