mineral
Ferruginous Quartz
Silicon Dioxide (SiO2) with iron oxide inclusions
Hardness 7 on the Mohs scale. Dull to waxy luster. Massive crystal structure. Opaque to translucent cream-white base with reddish-brown and orange iron stains. Conchoidal fracture.
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Physical properties
Hardness 7 on the Mohs scale. Dull to waxy luster. Massive crystal structure. Opaque to translucent cream-white base with reddish-brown and orange iron stains. Conchoidal fracture.
Formation & geological history
Formed through the crystallization of silica-rich hydrothermal fluids or within igneous pegmatites. The specific iron staining (limonite or hematite) occurs when iron-rich groundwater permeates cracks in the quartz.
Uses & applications
Primarily used as decorative landscaping stone, drainage gravel, or as a low-value collector specimen for those interested in mineral staining.
Geological facts
Also known as 'Hematoid Quartz' or 'Golden Healer' in metaphysical circles. The iron oxide can be removed with oxalic acid to reveal clean white quartz underneath.
Field identification & locations
Identify in the field by its hardness (cannot be scratched by a steel nail) and the distinct veining or staining along fractures. Found worldwide in riverbeds and glacial till.
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