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