mineral
Hematoid Quartz
Ferruginous Quartz (SiO2 with Fe2O3 inclusions)
AI-generated identification · may be incorrectHardness: 7 (Mohs scale), Color: Clear with reddish-brown or orange streaks, Luster: Vitreous, Crystal Structure: Trigonal/Hexagonal, Cleavage: None/Conchoidal fracture, Specific Gravity: 2.65
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Physical properties
Hardness: 7 (Mohs scale), Color: Clear with reddish-brown or orange streaks, Luster: Vitreous, Crystal Structure: Trigonal/Hexagonal, Cleavage: None/Conchoidal fracture, Specific Gravity: 2.65
Formation & geological history
Formed when iron oxides (hematite or limonite) are trapped within the crystal structure of quartz during its growth or through seepage into fractures. These usually form in hydrothermal veins or pegmatites.
Uses & applications
Primarily used in jewelry, ornamental carvings, decorative crystal spheres, and high-quality mineral collections. Highly valued in metaphysical communities.
Geological facts
Also known as 'Fire Quartz' or 'Harlequin Quartz,' the red coloration is caused specifically by inclusions of Hematite. It is often found in Madagascar and Brazil.
Field identification & locations
Identify by the presence of red/orange iron staining or internal phantom-like patterns inside transparent to translucent quartz. It will scratch glass easily.
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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