Luzonite
ID: 99
Luzonite
Chemical Formula
Cu3AsS4
Hardness (Mohs)
3.5
Crystal System
Tetragonal
Streak
Black.
Luster
Metallic
Diaphaneity
Opaque
Color
Deep pinkish-brown
Crystal Habit / Mode of Occurrence
Commonly coarse-grained, fine-grained, massive, intimately intergrown with Enargite.
Fun Facts
Named in 1874 after the type locality, Mancayan, Luzon, Philippines.