Poldervaartite, Calcite

Unknown Owner

Help improve this recordNo owner is registered for this specimen yet. If it's yours or you know more about it, you can add the owner, provenance, publications and other details.

A superb, isolated crystal of the rare calcium-manganese silicate poldervaartite, from the Kalahari Manganese Fields in South Africa. What makes this specimen really distinctive is the quite rare appearance of a glassy, window-clear crystal of calcite that has grown right up against the poldervaartite. Can be trimmed to a killer thumbnail! The poldervaartite crystal measures 1.8 cm. 5.2 x 2.3 x 2.1cm