Mineral/Igneous/Metamorphic association
Quartz with inclusions (likely Chlorite or Hornblende) and country rock
SiO2 (Quartz) with associated ferromagnesian minerals
AI-generated identification · may be incorrectQuartz: Hardness 7, white/colorless, vitreous luster, conchoidal fracture. Greenish part: likely chlorite-rich or epidote-rich altered rock.
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Physical properties
Quartz: Hardness 7, white/colorless, vitreous luster, conchoidal fracture. Greenish part: likely chlorite-rich or epidote-rich altered rock.
Formation & geological history
Formed in hydrothermal veins or pegmatites intruding into surrounding country rock, often undergoing metamorphism or alteration.
Uses & applications
Specimen collecting, sometimes lapidary use if solid enough. Quartz is used in various industries.
Geological facts
The parallel, almost fibrous-looking inclusions or growth patterns in the quartz suggest a dynamic growth environment, potentially a fault vein or shear zone (slickenlines/slickensides).
Field identification & locations
Identified by the hardness of quartz (scratches glass) contrasting with the softer greenish altered minerals. Common in mountainous, geologically active, or ancient shield regions worldwide.
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