21hhdf.ps-89 ((SIDERITE pseudomorph after CALCITE)), $20 MINIMUM BID, La Sirena Mine, Guanajuato, Mexico, 5 x 3 x 3 cm, Miniature | |
This looks more like a cast after Calcite rather than a pseudomorph. The under side has the impression of a scalenahedron crystal of Calcite. ex Don Fratto collection |