mineral
Yellow Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, pale yellow to golden color, vitreous luster, hexagonal crystal system (though tumbled here), conchoidal fracture, specific gravity of 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, pale yellow to golden color, vitreous luster, hexagonal crystal system (though tumbled here), conchoidal fracture, specific gravity of 2.65.
Formation & geological history
Formed in various geological environments, predominantly in igneous pegmatites, hydrothermal veins, and sedimentary environments as secondary deposits from silica-rich solutions.
Uses & applications
Used in jewelry, decorative items, lapidary arts, and as a collector's specimen.
Geological facts
Yellow quartz is often naturally colored by iron impurities within the crystal lattice. When intensely colored and transparent, it is classified as citrine.
Field identification & locations
Easily identified by its high hardness (scratches glass), conchoidal fracture, and lack of cleavage. Commonly found in river gravels and beaches worldwide after being weathered from parent rock.
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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