Properties of Porphyry lan Pantellerite
ukuran gandum
grained nggoleki
grained nggoleki
rengat
ora duwe aturan baku
sub-conchoidal
porosity
kurang keropos
kurang keropos
cleavage
cacat
conchoidal
tartamtu gravitasi
2.5-4
ora Sumadhiya
transparan
tembus kanggo opaque
tembus kanggo opaque
Kapadhetan
2.5-2.52 g / cm 3
ora Sumadhiya
resistance
tahan panas, impact tahan
tahan panas