Properties of Porphyry lan Coquina
ukuran gandum
grained nggoleki
coarse grained
rengat
ora duwe aturan baku
ora duwe aturan baku
porosity
kurang keropos
Highly keropos
luster
kurang
kurang kanggo vitreous kanggo submetallic
cleavage
cacat
ora kasedhiya
kateguhan
1.7
ora kasedhiya
tartamtu gravitasi
2.5-4
1.10-2.24
transparan
tembus kanggo opaque
opaque
Kapadhetan
2.5-2.52 g / cm 3
2.8-2.9 g / cm 3
resistance
tahan panas, impact tahan
tahan panas, impact tahan, meksa tahan, nyandhang tahan