Properties of Foidolite lan Anthracite
ukuran gandum
medium kanggo nggoleki coarse grained
medium kanggo nggoleki coarse grained
rengat
conchoidal
conchoidal
porosity
banget kurang keropos
kurang keropos
luster
subvitreous kanggo kurang
mengilap
cleavage
sampurna
non-ana
kateguhan
ora kasedhiya
ora kasedhiya
tartamtu gravitasi
2.86
1.1-1.4
Kapadhetan
ora Sumadhiya
1.25-2.5 g / cm 3
kapasitas panas tartamtu
ora Sumadhiya
resistance
tahan panas, nyandhang tahan
tahan panas, banyu tahan