Crystal habit, luster, color, streak, cleavage, fracture, fluorescence, phosphorescence, specific gravity and magnetism.
晶体习性、光泽、颜色、条痕、解理、裂理、荧光、磷光、比重和磁性。
2
The crystal is shiny glass, but is common to the oil sheen on the surface of fracture.
晶面呈玻璃光泽，但常见到的是断口面上的油脂光泽。
3
Primary fracture were formed during the lava crystal and the secondary fracture generated during the volcanic reconstruction by tectonic movement, and wind action, solution.