Oldhamite, Fluorite, Periclase, Thaumasite, Cuspidine, Portlandite, Spurrite
Dąbrowka Wielka, Siemianowice Śląskie, Silesian Voivodeship, Poland
Inner part of a 1,7 cm fragment of the concretion-like sample with 2 types of mineral segregations. The green botryoidal one constits mainly of and oldhamite and fluorite with coexisting cuspidine, periclase and thaumasite (fluorite and cuspidine are more abundant in the outer part of the sample). The white zones are built up mainly with ...
© Lukasz Kruszewski 2006