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Artinite

Type Locality
Dossi di Franscia (Franscia Mine; Franscia Mines; Franscia Quarries), Campo Franscia (Franscia), Lanzada, Lanterna Valley, Malenco Valley, Valtellina, Sondrio Province, Lombardy, Italy
Mineral Data
Mg2(CO3)(OH)2·3H2O
Strunz: 
5.DA.10
Physical Properties
Crystal System: 
Monoclinic
Streak: 
White
Hardness: 
2.5
Tenacity: 
brittle