Properties of Rhyodacite lan Anthracite
ukuran gandum
grained nggoleki
medium kanggo nggoleki coarse grained
rengat
conchoidal
conchoidal
porosity
kurang keropos
kurang keropos
luster
greasy kanggo kurang
mengilap
kekuatan compressive
ora Sumadhiya
cleavage
ora kasedhiya
non-ana
kateguhan
2.1
ora kasedhiya
tartamtu gravitasi
2.34-2.40
1.1-1.4
Kapadhetan
ora Sumadhiya
1.25-2.5 g / cm 3
resistance
tahan panas
tahan panas, banyu tahan