mineral
Yellow Quartz
Silicon Dioxide (SiO2)
Hardness of 7 on the Mohs scale, yellow to golden color, vitreous luster, trigonal 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, yellow to golden color, vitreous luster, trigonal crystal system, conchoidal fracture with no true cleavage, specific gravity of 2.65.
Formation & geological history
Formed in hydrothermal veins, pegmatites, and sedimentary environments through the precipitation of silica-rich solutions.
Uses & applications
Used in gemstone and lapidary work, making ornamental objects, and crystal collecting.
Geological facts
Yellow quartz is often colored by irradiation, iron impurities, or sub-microscopic inclusions of minerals like goethite or limonite.
Field identification & locations
Identified by its high hardness, conchoidal fracture, and lack of cleavage. Commonly found worldwide in various quartz-bearing rock formations.
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Limonite / Goethite (Iron Ore Mineral nodule)
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Schist
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Septarian Pebble
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