Properties of Trachyandesite lan Anthracite
ukuran gandum
grained nggoleki
medium kanggo nggoleki coarse grained
rengat
conchoidal
conchoidal
tilas
cahya kanggo coklat peteng
ireng
porosity
kurang keropos
kurang keropos
kekuatan compressive
ora Sumadhiya
cleavage
sampurna
non-ana
kateguhan
2.3
ora kasedhiya
tartamtu gravitasi
2.8-3
1.1-1.4
Kapadhetan
2.9-3.1 g / cm 3
1.25-2.5 g / cm 3
resistance
tahan panas, meksa tahan, nyandhang tahan
tahan panas, banyu tahan