Calcite, siderite on marmatite

Romania, Maramureș, Baia Sprie, Baia Sprie mine (Felsőbánya mine).

Calcite, siderite on marmatite
138.50 *Prices include VAT
Article codeV.B.0220.121
Top; a very attractive piece with a few mm thick crust of orange-yellow siderite that just not everywhere covers the black matrix of zinc ore (marmatite; an opaque black iron-rich variety of sphalerite).
On top of that clusters of intergrown calcite crystals. A truly bizarre piece.
Measures approximately 150x130x45 mm and weighs approximately 1,250 kilogramme.

The detailed pictures give a good idea of the natural growth forms of the siderite crust.