Properties of Picrite lan Rhyodacite
ukuran gandum
grained nggoleki
grained nggoleki
rengat
ora rata
conchoidal
tilas
putih, greenish putih utawa abu-abu
ireng
porosity
kurang keropos
kurang keropos
luster
subvitreous kanggo kurang
greasy kanggo kurang
cleavage
cacat
ora kasedhiya
tartamtu gravitasi
2.75-2.92
2.34-2.40
Kapadhetan
1.5-2.5 g / cm 3
ora Sumadhiya
resistance
tahan panas
tahan panas