i need to know how much it is worth for my little brother. please elp me. he needs this by Feb. 1. which is tomarrow.
Quartz has a hexagonal prism shape and it has a hardness of about 7. No cleavage, just conchoidal fracture. Muscovite mica is light coloured and breaks off into think sheets because of its basal cleavage. Biotite mica is similar but it tends to be dark brown or black.
