mineral
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2) with Limonite/Goethite
Hardness: 7 (Mohs scale); Color: White to orange-brown; Luster: Vitreous to greasy; Crystal Structure: Trigonal; Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65
- Hardness
- 7 (Mohs scale)
- Color
- White to orange-brown
- Luster
- Vitreous to greasy
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Physical properties
Hardness: 7 (Mohs scale); Color: White to orange-brown; Luster: Vitreous to greasy; Crystal Structure: Trigonal; Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65
Formation & geological history
Formed in hydrothermal veins or as a secondary mineral in igneous and metamorphic environments. The orange staining is caused by the oxidation of iron-rich minerals over thousands of years.
Uses & applications
Used as a source of silica for glass and electronics; common in landscaping and as a pocket stone for collectors.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust. Iron-stained specimens like this are often referred to as 'Hematoid Quartz' or 'Golden Healer' in metaphysical circles.
Field identification & locations
Identified by its ability to scratch glass and its lack of cleavage. Commonly found in gravel beds, stream deposits, and mountain outcrops. Look for the characteristic sugary or glassy texture behind the rust-colored exterior.
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