Properties of Anthracite lan Obsidian
Properties
fisik
atose
1-1.5
5-5.5
ukuran gandum
medium kanggo nggoleki coarse grained
ora ditrapake
rengat
conchoidal
conchoidal
tilas
ireng
putih
porosity
kurang keropos
banget kurang keropos
luster
mengilap
vitreous
kekuatan compressive
ora Sumadhiya
0.15 n / mm 2
33
cleavage
non-ana
non-ana
kateguhan
ora kasedhiya
ora kasedhiya
tartamtu gravitasi
1.1-1.4
2.6-2.7
transparan
opaque
tembus
Kapadhetan
1.25-2.5 g / cm 3
2.6 g / cm 3
situs termal
kapasitas panas tartamtu
1.32 kj / kg k
4
0.92 kj / kg k
10
resistance
tahan panas, banyu tahan
tahan panas, impact tahan
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