This is a cluster of pale yellow calcite crystals on matrix. The overall dimensions of the piece are 14 cm wide by 8.5 cm tall by 6 cm front to back. The piece is from the Sweetwater Mine, Reynolds County, Missouri, USA. Sweetwater Mine is southernmost of the ore-rich mines of the Viburnum Trend, discovered in the 1950s and still operating today. There are damaged crystals at the edge of the matrix.