mineral
Quartz Geode Fragment
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, white to translucent color, vitreous luster, hexagonal crystal system, conchoidal fracture with no true cleavage, specific gravity of 2.65
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Physical properties
Hardness of 7 on the Mohs scale, white to translucent color, vitreous luster, hexagonal crystal system, conchoidal fracture with no true cleavage, specific gravity of 2.65
Formation & geological history
Formed through the deposition of silica-rich groundwater inside gas cavities or nodules in sedimentary or volcanic rocks over millions of years
Uses & applications
Used in mineral collections, ornamental display, and metaphysical practices
Geological facts
Geodes start as hollow bubbles in rock, where mineral-rich water slowly precipitates microscopic quartz crystals along the inner walls over vast geologic timescales
Field identification & locations
Easily identified by its sparkling crystalline interior contrasting with a rough, nodular outer rind; commonly found in limestone formations or volcanic deposits worldwide
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Gneiss or Mica Schist with Garnet
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Sandstone (with potential mineral staining/concretions)
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Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Pegmatite with Tourmaline and Quartz
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Granite
Granite (Phaneritic intrusive igneous rock)
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Septarian Pebble
Septarian nodule / Concretion
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