mineral
Quartz Boulder
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, white to milky or light pinkish color, vitreous to greasy luster, trigonal crystal system, conchoidal fracture with no true cleavage, specific gravity of 2.65
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Physical properties
Hardness of 7 on the Mohs scale, white to milky or light pinkish color, vitreous to greasy luster, trigonal crystal system, conchoidal fracture with no true cleavage, specific gravity of 2.65
Formation & geological history
Formed through hydrothermal processes, crystallization from silica-rich magmas, or as a primary constituent of various igneous, metamorphic, and sedimentary rocks over millions of years
Uses & applications
Used in glassmaking, electronics, optics, countertops, abrasives, and as ornamental landscape stones or lapidary material
Geological facts
Quartz is one of the most abundant minerals in the Earth's continental crust and exhibits piezoelectric properties, meaning it can generate an electrical charge under mechanical stress
Field identification & locations
Easily identified by its high hardness (scratches glass), lack of cleavage, and conchoidal fracture; commonly found in veins cutting through older rock formations worldwide
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Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Granite
Granite (Phaneritic intrusive igneous rock)
igneous
Septarian Pebble
Septarian nodule / Concretion
sedimentary