Properties of Hornfels lan Picrite
ukuran gandum
grained nggoleki
grained nggoleki
rengat
conchoidal
ora rata
tilas
dingerteni
putih, greenish putih utawa abu-abu
porosity
Highly keropos
kurang keropos
luster
mengilap
subvitreous kanggo kurang
kateguhan
durung ketemu
2.1
tartamtu gravitasi
3.4-3.9
2.75-2.92
Kapadhetan
0.25-0.30 g / cm 3
1.5-2.5 g / cm 3
resistance
tahan panas, impact tahan, meksa tahan
tahan panas