Shopov's cave system, Bulgaria
Speleothems: vitreous. semi-amorphous crusts, stalactites
Frequency: Extremely Rare
Other geologic settings: In weathered and altered ultramafic rocks, as serpentinites
First description of cave occurrence: Shopov, Y.Y. 1988. Bulgarian cave minerals. Bulletin of the National Speleological Society 50(1): 21-24
First description of non-cave occurrence: Brugnatelli S.C.L. 1902. Sopra un nuovo minerale delle cave d´Amianto della Valle Lanterna. Rendiconti Reale Istituto Lombardo di Scienze e Lettere, Milano 35: 869-874
Group: Carbonates
Chemical formula: Mg2(CO3)(OH)2·3H2O
[According to the official IMA-CNMNC List of Mineral Names (http://nrmima.nrm.se/imalist.htm)]
Deposition and stability: It is ore-associated, but with unknown exact origin
U present in trace amounts (1-5%)
Mineral assemblage: + amorphous hydrozincite
- Monoclinic