Properties of Nephelinite lan Rhomb Porphyry
ukuran gandum
grained nggoleki
grained nggoleki
porosity
kurang keropos
banget kurang keropos
luster
vitreous kanggo metallic
subvitreous kanggo kurang
tartamtu gravitasi
2.4-2.9
2.86
Kapadhetan
2.5-3 g / cm 3
2.8-2.9 g / cm 3
resistance
tahan panas
tahan panas, meksa tahan