mineral
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Hardness: 7 (Mohs scale), Color: Rusty yellow to orange-brown due to iron oxide impurities, Luster: Vitreous to greasy, Crystal structure: Trigonal/Hexagonal, Cleavage: None (Conchoidal fracture), Specific Gravity: 2.65
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Physical properties
Hardness: 7 (Mohs scale), Color: Rusty yellow to orange-brown due to iron oxide impurities, Luster: Vitreous to greasy, Crystal structure: Trigonal/Hexagonal, Cleavage: None (Conchoidal fracture), Specific Gravity: 2.65
Formation & geological history
Formed in igneous, metamorphic, or sedimentary environments from silica-rich hydrothermal fluids or cooling magma. The yellow/orange staining occurs through secondary weathering and infiltration by limonite or hematite.
Uses & applications
Used in glass manufacturing, electronics (piezoelectric properties), abrasives, and as a common specimen for gemstone tumbling or hobbyist collecting.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust. Iron-stained quartz like this is often referred to as 'limonite quartz' or 'golden healer' in metaphysical circles.
Field identification & locations
Identify in the field by its hardness (it will easily scratch glass) and lack of cleavage. Found globally, especially in riverbeds, mountain outcrops, and glacial deposits.
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