mineral
Yellow Quartz / Chalcedony
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, waxy to vitreous luster, translucent to semi-opaque, yellow to honey-brown color caused by iron inclusions, lacks distinct cleavage, conchoidal fracture.
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Physical properties
Hardness of 7 on the Mohs scale, waxy to vitreous luster, translucent to semi-opaque, yellow to honey-brown color caused by iron inclusions, lacks distinct cleavage, conchoidal fracture.
Formation & geological history
Formed through the precipitation of silica-rich hydrothermal fluids in cavities, veins, or sedimentary gravel beds. Common in alluvial and river deposit environments.
Uses & applications
Used widely in lapidary arts, jewelry, tumbled stones, pocket stones, and decorative rock collections.
Geological facts
Yellow quartz varieties often get their coloration from microscopic trace amounts of iron oxides like goethite or hematite distributed within the crystal structure.
Field identification & locations
Identified by its hardness (scratches glass), waxy luster when wet or polished, and translucency when held up to light. Commonly found in riverbeds, beach gravels, and pegmatite regions 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