Properties of Gritstone lan Variolite
ukuran gandum
coarse grained
ora ditrapake
rengat
conchoidal
conchoidal
tilas
putih
putih kanggo werna abu-abu
porosity
Highly keropos
kurang keropos
luster
kurang
ora kasedhiya
cleavage
sampurna
ora kasedhiya
kateguhan
ora kasedhiya
2.3
tartamtu gravitasi
2.250
2.8-3
Kapadhetan
2.2 g / cm 3
2.9-3.1 g / cm 3
resistance
tahan panas, impact tahan, meksa tahan
tahan panas, meksa tahan, nyandhang tahan