Properties of Gritstone lan Picrite
ukuran gandum
coarse grained
grained nggoleki
rengat
conchoidal
ora rata
tilas
putih
putih, greenish putih utawa abu-abu
porosity
Highly keropos
kurang keropos
luster
kurang
subvitreous kanggo kurang
kateguhan
ora kasedhiya
2.1
tartamtu gravitasi
2.250
2.75-2.92
Kapadhetan
2.2 g / cm 3
1.5-2.5 g / cm 3
resistance
tahan panas, impact tahan, meksa tahan
tahan panas