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66 mm Calcite from Kjørholt
$ 19.99
ID20362
Location
Dalen-Kjørholt Mine, Brevik, Porsgrunn, Vestfold og Telemark, Norway
Size: 62x66x50 mm (177 gr.)
Description
These are phantom crystals grown in layers, where the inner layer is covered with pyrite. The outer layer is transparent. The last 2 pictures are taken with extra light to expose this.
The specimen has a few nicks and damage on the edges.
I am not quite sure when it was found. But me and my father visited the mines in December 1992, together with a guy that worked in the mines. At this time he also bought some specimens. I cannot guarantee it is from this year, it could also be found some years later.
Dalen-Kjørholt Mine, Brevik, Porsgrunn, Vestfold og Telemark, Norway
Dalen mines has an extent of approximately 250 kilometers and has descended to a depth of 340 meters below the fjord.
A/S Dalen Portland Cementfabrik (DPC) was founded as a limited company on 7 August 1916. In 1988, Norcem Kjørholt bought mines from Norsk Hydro, and the cement factory is the only one in the world with underground mining of limestone.
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