mineral
Quartz (Agate/Chalcedony)
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, vitreous to waxy luster, conchoidal fracture, hexagonal crystal system, specific gravity of 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, vitreous to waxy luster, conchoidal fracture, hexagonal crystal system, specific gravity of 2.65.
Formation & geological history
Forms in hydrothermal veins, cavities of volcanic rocks, and sedimentary environments through the deposition of silica-rich fluids over millions of years.
Uses & applications
Used in jewelry, decorative carvings, lapidary arts, and industrial applications due to its piezoelectric properties.
Geological facts
Quartz is one of the most abundant minerals in the Earth's continental crust and comes in numerous varieties based on color and crystal habit.
Field identification & locations
Easily identified by its high hardness (scratches glass), lack of cleavage, and distinct conchoidal fracture.
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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