“Sparkling brown micro crystals of siderite that have completely replaced dogtooth crystals of calcite to 14 mm in length. On close inspection, the siderite pseudomorphs comprise multitudes of tiny disks. When viewing the specimen along the matrix edge it is evident that the ex-calcite crystals are hollow.
11.5 x 6.4 x 3.3 cm
”
Don Windeler - 3rd January 2011