511-9ldgciss ((SIDERITE epimorph/pseudomorph after CALCITE)), $15 MINIMUM BID, Aggenys Lead Zinc Mine, North West Province, South Africa, 5 x 3.5 x 2 cm, Miniature, | |
Here is a fairly recent find from a few years ago. The brown Calcite shaped crystals are actually hollow and I believe a combination of Siderite and Sphalerite. |