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Nesquehonite from Silesia, Czech Republic/Germany/Poland

ETV-5C6Nesquehonite MgCO3·3H2O , Aragonite CaCO3 , Calcite CaCO3

03542140017272731229207.jpg
Słupiec heap, Słupiec Mine, Nowa Ruda, Kłodzko County, Lower Silesian Voivodeship, Poland

Field of View: 8 mm

Typical white to colourless protrusions of a mixture of nesquehonite, aragonite, and calcite. They arisen in a low-temperature fumarole in a pile rich in gabbro waste rocks. The were likely formed in a process resembling CO2 sequestration by ultramafic rocks. The latter process takes place at the bottom of the oceans. Here it may be a typical pneumatolytic process - one of many natural phenomena caused by spontaneous coal fires. Other Mg carbonates were also found in a single spot from a burning heap of the Upper Silesian Coal Basin (in Radlin).
Copyright: © Łukasz Kruszewski 2019      Photo ID: 952372     Uploaded by: Łukasz Kruszewski   Approval date: 2019-04-29   View Count: 216   Approval status: Public galleries    Type: Photo - 1164 x 1024 pixels (1.2 Mpix)
 
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