
mineral
Quartz (specifically Clear Quartz with iron/hematite staining)
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 7 (Mohs scale); Color: Colorless to pale brownish/orange due to surface oxidation; Luster: Vitreous (glassy); Crystal Structure: Hexagonal (trigonal); Cleavage: None (conchoidal fracture); Specific Gravity: 2.65
- Hardness
- 7 (Mohs scale)
- Color
- Colorless to pale brownish/orange due to surface oxidation
- Luster
- Vitreous (glassy)
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Physical properties
Hardness: 7 (Mohs scale); Color: Colorless to pale brownish/orange due to surface oxidation; Luster: Vitreous (glassy); Crystal Structure: Hexagonal (trigonal); Cleavage: None (conchoidal fracture); Specific Gravity: 2.65
Formation & geological history
Formed from silica-rich hydrothermal solutions cooling in rock cavities or pegmatites. This specimen likely comes from a vug or pocket where it had space to develop its characteristic prismatic habit. Staining suggests exposure to iron-rich water.
Uses & applications
Abrasives, glass manufacturing, gemstones, and electronics (due to piezoelectric properties). Highly popular in metaphysical markets and mineral collecting.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust. It is piezoelectric, meaning it generates an electric charge in response to applied mechanical stress, which is why it's used in watches and clocks.
Field identification & locations
Identify by its six-sided prismatic shape, lack of cleavage, and ability to scratch glass easily. Commonly found worldwide, with major commercial deposits in Brazil and Arkansas, USA. Collectors should look for terminations without chips or 'damage' and clear transparency.
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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