Mineral :Tectosilicates - Opal
ฝัง
- เผยแพร่เมื่อ 7 ก.พ. 2025
- Luster - vitreous
Streak - white
Hardness - 5-6
Density - low density
Cleavage - none
Color - variable
Crystal system - amorphous
Crystal form/habit - forms in veins and pockets
Extra notes - conchoidal fracture, internal light diffraction produces a play of colors
