substances of nature, which evolve from the earth. although solid and hard they are fragile. often times clear and translucent, they can appear to be invisible. like the rose, crystal and glass are beautiful but can be dangerously sharp. since b.c., the shapes and colors ofcrystal and glass have fascinated...
substances of nature, which evolve from the earth. although solid and hard they are fragile. often times clear and translucent, they can appear to be invisible. like the rose, crystal and glass are beautiful but can be dangerously sharp. since b.c., the shapes and colors ofcrystal and glass have fascinated...
fine powders. porosity. the porosity of massive limestone varies from to %. porosity is the percentage of voids in the bulk volume of the stone. quicklime is usually considerably more porous than its parent limestones. crystal structure. limestone is either or rhombohedral or rhombohedral in crystal...