Properties of Porphyry lan Krikel Minyak
ukuran gandum
grained nggoleki
banget nggoleki-grained
rengat
ora duwe aturan baku
ora kasedhiya
porosity
kurang keropos
Highly keropos
tartamtu gravitasi
2.5-4
2.2-2.8
transparan
tembus kanggo opaque
opaque
Kapadhetan
2.5-2.52 g / cm 3
2.4-2.8 g / cm 3
kapasitas panas tartamtu
ora Sumadhiya
resistance
tahan panas, impact tahan
tahan panas, impact tahan