mineral
Quartz Crystal Point
Silicon Dioxide (SiO2)
Hardness: 7 (Mohs scale), Color: Clear/White/Milky, Luster: Vitreous (glassy), Crystal Structure: Trigonal/Hexagonal prism, Cleavage: None (conchoidal fracture), Specific Gravity: 2.65
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Physical properties
Hardness: 7 (Mohs scale), Color: Clear/White/Milky, Luster: Vitreous (glassy), Crystal Structure: Trigonal/Hexagonal prism, Cleavage: None (conchoidal fracture), Specific Gravity: 2.65
Formation & geological history
Formed from silica-rich hydrothermal solutions or cooling magma in veins and geodes. Can be found in all types of geological environments and ages, from Precambrian to recent deposits.
Uses & applications
Used in electronics (oscillators), glass manufacturing, abrasives, jewelry, and by collectors for metaphysical or aesthetic purposes.
Geological facts
Quartz is one of the most abundant minerals on Earth's surface and is the main component of most beach sand. Piezoresistance in quartz allows it to generate an electrical charge under pressure.
Field identification & locations
Identify by its hexagonal point, hardness (it will scratch glass), and lack of cleavage. Commonly found in riverbeds, mountain outcrops, and mines globally (notably Brazil and Arkansas, USA).
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Arenite (SiO2 based)
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Nephrite Jade
Nephrite
Mineral/Rock
Banded Gneiss (River Rock/Pebble)
Gneiss (specifically a banded variety often found as a river rock)
Metamorphic Rock
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Green Apatite on Albite
Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]
mineral
Epidote
Epidote - Ca2(Al2,Fe3+)3(SiO4)3(OH)
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