Properties of Felsite lan Gritstone
ukuran gandum
grained nggoleki
coarse grained
rengat
conchoidal
conchoidal
porosity
banget kurang keropos
Highly keropos
cleavage
non-ana
sampurna
kateguhan
ora kasedhiya
ora kasedhiya
tartamtu gravitasi
2.6-2.7
2.250
Kapadhetan
2.6 g / cm 3
2.2 g / cm 3
resistance
tahan panas, impact tahan
tahan panas, impact tahan, meksa tahan