mineral
Quartz with Tourmaline
Silicon Dioxide with Schorl (SiO2 + NaFe3Al6(Si6O18)(BO3)3(OH)4)
Hardness of 7 on the Mohs scale, color ranges from clear/milky white for quartz to opaque black for tourmaline, vitreous to sub-resinous luster, hexagonal crystal system, conchoidal fracture for quartz.
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Physical properties
Hardness of 7 on the Mohs scale, color ranges from clear/milky white for quartz to opaque black for tourmaline, vitreous to sub-resinous luster, hexagonal crystal system, conchoidal fracture for quartz.
Formation & geological history
Formed in hydrothermal veins and pegmatites through cooling and crystallization of silica-rich mineral fluids under high pressure and temperature over millions of years.
Uses & applications
Used in mineral specimen collection, lapidary arts, metaphysical practices, and industrial applications of quartz.
Geological facts
Tourmaline crystal inclusions growing inside or alongside clear quartz are highly sought after by collectors for their striking contrast.
Field identification & locations
Easily identified by the stark contrast between the glassy quartz host and the striated black tourmaline blades. Commonly found in pegmatite-rich regions worldwide.
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