mineral
Quartz Cluster
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectMohs hardness of 7, vitreous luster, trigonal crystal system, white to off-white or tan color, lacks true cleavage, specific gravity of 2.65.
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Physical properties
Mohs hardness of 7, vitreous luster, trigonal crystal system, white to off-white or tan color, lacks true cleavage, specific gravity of 2.65.
Formation & geological history
Forms through hydrothermal processes, precipitating from silica-rich fluids in cavities, veins, and pegmatites across various geological time periods.
Uses & applications
Used widely as mineral specimens for display, in metaphysical practices, as a source of quartz for industrial applications, and in jewelry making.
Geological facts
Quartz is one of the most abundant minerals in Earth's continental crust. Druzy or clustered formations occur when many small crystals grow together covering a host rock or filling a cavity.
Field identification & locations
Identified by its hexagonal/prismatic crystal points, high hardness (scratches glass), and glassy luster. Found globally in quartz-rich rock formations and pegmatite deposits.
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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