الفرق بين الرمل الكوارتز ورمل السيليكا
n n everyday chemistry what's the difference between sand and quartz. n. The composition of sand varies,depending on the local rock sources and conditions,but the most common constituent of sand in inland continental settings and non tropical coastal settings is silica (silicon dioxide,or SiO2),usually in the form of quartz.Sand is a heterogeneous …