Minerale caratterizzato da un colore nero, lucentezza adamantina, frattura concoide, sfaldatura perfetta, tenacità fragile, trasparente. L’abito cristallino è formato da cristalli rombododecaedrici e tetraedrici associati a numerosi cristalli di quarzo aciculari e pirite.
ZONA DI PROVENIENZA
NAZIONE DI PROVENIENZA
Perù
ORIGINE
Minerale che si origina in filoni idrotermali, in depositi sedimentari, metamorfici, all’interno di rocce granitoidi.
USI
Minerale utilizzato in gemmologia, essendo considerata una pietra preziosa di grande valore per la sua bellezza estetica e sua grande rarità.
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