Properties of Hornfels lan Krikel
ukuran gandum
grained nggoleki
banget nggoleki-grained
rengat
conchoidal
ora kasedhiya
porosity
Highly keropos
Highly keropos
kateguhan
durung ketemu
2.6
tartamtu gravitasi
3.4-3.9
2.2-2.8
Kapadhetan
0.25-0.30 g / cm 3
2.4-2.8 g / cm 3
resistance
tahan panas, impact tahan, meksa tahan
tahan panas, impact tahan