Siderite-Sphalerite casts after Calcite

specimen number:
1451128

location:
Broken Hill mine, Aggeneys, Namakwa, Northern Cape, South Africa

description:
Neat hollow casts of now gone calcite crystals, these measuring to 5.0 cm in size, just crystallized siderite and sphalerite present now. These set on matrix. The thin shell-like structure is seen in the video. Neat stuff from the mid-2000's.

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