Properties of Porphyry lan Minette
ukuran gandum
grained nggoleki
nggoleki kanggo coarse grained
rengat
ora duwe aturan baku
conchoidal
porosity
kurang keropos
banget kurang keropos
luster
kurang
subvitreous kanggo kurang
cleavage
cacat
conchoidal
kateguhan
1.7
ora kasedhiya
tartamtu gravitasi
2.5-4
2.86-2.87
transparan
tembus kanggo opaque
tembus kanggo opaque
Kapadhetan
2.5-2.52 g / cm 3
2.95-2.96 g / cm 3
resistance
tahan panas, impact tahan
tahan panas, impact tahan