mineral
Clear Quartz Crystal
Silicon Dioxide (SiO2)
Hardness: 7 (Mohs), Color: Colorless/Transparent, Luster: Vitreous (glassy), Crystal Structure: Hexagonal (Trigonal), Cleavage: None/Conchoidal fracture, Specific Gravity: 2.65
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Physical properties
Hardness: 7 (Mohs), Color: Colorless/Transparent, Luster: Vitreous (glassy), Crystal Structure: Hexagonal (Trigonal), Cleavage: None/Conchoidal fracture, Specific Gravity: 2.65
Formation & geological history
Forms in igneous, metamorphic, and sedimentary environments through the cooling of silica-rich molten rock (magma) or from hydrothermal veins.
Uses & applications
Extensively used in electronics (oscillators), watchmaking, glass making, abrasives, and as a popular gemstone for jewelry and metaphysical collecting.
Geological facts
Quartz is one of the most abundant and diverse minerals on Earth. It is piezoelectric, meaning it generates an electric charge when mechanical pressure is applied.
Field identification & locations
Identify by its six-sided prismatic habit, hardness (will scratch glass), and lack of cleavage. Found globally, extremely common in mountainous regions.
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Other mineral specimens
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Schist
Schist
Metamorphic
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Nephrite Jade
Nephrite
Mineral/Rock
Banded Gneiss (River Rock/Pebble)
Gneiss (specifically a banded variety often found as a river rock)
Metamorphic Rock
![Green Apatite on Albite (Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]) — mineral](https://media.rockidentification.com/2391a63f-fb20-47d5-af9a-2035851eb32e-thumbnail.jpg)
Green Apatite on Albite
Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]
mineral