mineral
Yellow Quartz Pebble
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, yellow to yellowish-brown color due to iron oxide staining, vitreous luster, conchoidal fracture, trigonal crystal system when formed as crystals but appears as a smooth waterworn pebble here, specific gravity of 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, yellow to yellowish-brown color due to iron oxide staining, vitreous luster, conchoidal fracture, trigonal crystal system when formed as crystals but appears as a smooth waterworn pebble here, specific gravity of 2.65.
Formation & geological history
Formed via hydrothermal veins or igneous/metamorphic processes, later weathered out of parent rock and smoothed by water transport in a river or beach environment over geological timescales.
Uses & applications
Used in lapidary work, wire-wrapped jewelry, decorative landscaping, and as a pocket specimen for amateur rock collectors.
Geological facts
Quartz is one of the most abundant minerals on Earth's continental crust. Yellow coloration in quartz is typically caused by microscopic inclusions of goethite, limonite, or iron oxide staining within the crystal matrix.
Field identification & locations
Can be identified by its hardness (scratches glass), lack of cleavage, and conchoidal fracture. Commonly found in riverbeds, glacial tills, and marine gravels worldwide.
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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