mineral
Druzzy Quartz on Matrix
Silicon Dioxide (SiO2)
Hardness: 7 (Mohs), Color: Clear/White crystals on gray matrix, Luster: Vitreous/Glassy, Crystal System: Hexagonal, Cleavage: None/Conchoidal fracture
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Physical properties
Hardness: 7 (Mohs), Color: Clear/White crystals on gray matrix, Luster: Vitreous/Glassy, Crystal System: Hexagonal, Cleavage: None/Conchoidal fracture
Formation & geological history
Formed in hydrothermal veins or geodes where silica-rich fluids precipitate into cavities within volcanic or sedimentary host rocks. Most specimens range from late Paleozoic to Tertiary ages.
Uses & applications
Primarily used for mineral collecting, lapidary work, jewelry (pendants/rings), and metaphysical purposes. Industrial quartz is used in glass and electronics.
Geological facts
Druzzy refers to a coating of fine crystals on a rock surface. Quartz is one of the most abundant minerals on Earth and the primary constituent of most sand.
Field identification & locations
Identified by the sparkle of countless small crystal faces and its ability to scratch glass. Commonly found worldwide, especially in areas with historical volcanic activity or geothermal springs.
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Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Schist
Schist
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Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Nephrite Jade
Nephrite
Mineral/Rock
Banded Gneiss (River Rock/Pebble)
Gneiss (specifically a banded variety often found as a river rock)
Metamorphic Rock
![Green Apatite on Albite (Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]) — mineral](https://media.rockidentification.com/2391a63f-fb20-47d5-af9a-2035851eb32e-thumbnail.jpg)
Green Apatite on Albite
Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]
mineral