Properties of Scoria lan Batubara
ukuran gandum
grained nggoleki
medium kanggo nggoleki coarse grained
rengat
conchoidal
conchoidal
porosity
Highly keropos
kurang keropos
luster
subvitreous kanggo kurang
kurang kanggo vitreous kanggo submetallic
cleavage
sampurna
non-ana
kateguhan
2.1
ora kasedhiya
tartamtu gravitasi
ora Sumadhiya
1.1-1.4
Kapadhetan
ora Sumadhiya
1100-1400 g / cm 3
kapasitas panas tartamtu
ora Sumadhiya
resistance
tahan panas, impact tahan, meksa tahan, nyandhang tahan
tahan panas