Siderite Cast after Calcite, Aggeneys Mine, Northern Cape Province, South Africa, Mined c. 2007, Kalaskie Collection #632, Miniature 3.0 x 5.0 x 6.5 cm, $200. Online 11/7.
Calcite crystals to 2.5 cm faithfully replaced by golden brown siderite. Calcite morphology steep scalenohedra with basal pinacoid. Classic pseudomorph from mining circa 2007. One small broken cast on back side of piece near bottom edge but overall display area in excellent condition. Betty Kalaskie Collection #632..