mineral
Milky Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 7 (Mohs scale), Color: White to creamy yellowish-white, Luster: Vitreous to greasy, Crystal structure: Trigonal (often massive in tumbled form), Cleavage: None/Conchoidal fracture, Specific gravity: 2.65
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Physical properties
Hardness: 7 (Mohs scale), Color: White to creamy yellowish-white, Luster: Vitreous to greasy, Crystal structure: Trigonal (often massive in tumbled form), Cleavage: None/Conchoidal fracture, Specific gravity: 2.65
Formation & geological history
Formed in hydrothermal veins and pegmatites when silica-rich fluids cool. Its white color is caused by microscopic fluid inclusions of gas or liquid trapped during crystal growth.
Uses & applications
Used in glassmaking, abrasives, electronics (piezoelectric properties), and widely as tumbled stones for decor and metaphysical collections.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust. Milky quartz is the most common variety of quartz found in nature.
Field identification & locations
Identified by its waxy luster, hardness (will scratch glass), and lack of cleavage. Often found in riverbeds or as veins in larger rock outcrops. Common 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
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
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