Properties of Nephelinite lan Felsite
ukuran gandum
grained nggoleki
grained nggoleki
porosity
kurang keropos
banget kurang keropos
luster
vitreous kanggo metallic
vitreous
kateguhan
2.7
ora kasedhiya
tartamtu gravitasi
2.4-2.9
2.6-2.7
Kapadhetan
2.5-3 g / cm 3
2.6 g / cm 3
resistance
tahan panas
tahan panas, impact tahan