mineral
Milky Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, white to translucent color, vitreous to greasy luster, trigonal crystal system, and conchoidal fracture with no true cleavage.
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Physical properties
Hardness of 7 on the Mohs scale, white to translucent color, vitreous to greasy luster, trigonal crystal system, and conchoidal fracture with no true cleavage.
Formation & geological history
Forms from hydrothermal solutions and cooling magma in various geological environments worldwide across multiple geological eras.
Uses & applications
Used in glassmaking, electronics, abrasives, and as a decorative mineral specimen in crystal collections.
Geological facts
Milky quartz is the most common variety of the quartz family and owes its white color to microscopic fluid inclusions trapped during growth.
Field identification & locations
Easily identified by its high hardness (scratches glass), lack of cleavage, and characteristic cloudy white appearance; found globally.
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Limonite
FeO(OH)•nH2O
mineral
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic