SPECTACULAR WHITE QUARTZ WITH CHALCOPYRITE SPOTS ON GALENA CRYSTALS AND SPHALERITE TOTALLY TRANSPARENT AND ELONGED CRYSTALS IN DIFFERENT DIRECTIONS ON THE MATRIX. PART FOUND IN BULGARIA
Quartz is the most common mineral, the most abundant that can be found on earth.
It is composed of silicon and oxygen with SiO₂ formula.
According to the Nickel-Strunz classification, quartz belongs to the class of oxides, while in the Dana classification, it is considered a tectosilicate.
There are multiple varieties of quartz , colors and types.
