Properties of Scoria lan Greywacke
ukuran gandum
grained nggoleki
sudut lan nggoleki
rengat
conchoidal
conchoidal
porosity
Highly keropos
Highly keropos
luster
subvitreous kanggo kurang
kurang
cleavage
sampurna
sampurna
tartamtu gravitasi
ora Sumadhiya
2.2-2.8
Kapadhetan
ora Sumadhiya
2.6-2.61 g / cm 3
resistance
tahan panas, impact tahan, meksa tahan, nyandhang tahan
tahan panas, impact tahan, meksa tahan