metamorphic
Quartz Vein in Greenstone
Silica-infilled metabasalt
AI-generated identification · may be incorrectHardness 7 for quartz and 5-6 for the host greenstone. Colors range from mottled green to white. Luster is vitreous to dull.
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Physical properties
Hardness 7 for quartz and 5-6 for the host greenstone. Colors range from mottled green to white. Luster is vitreous to dull.
Formation & geological history
Formed through hydrothermal fluid precipitation filling fractures in ancient altered volcanic rocks during regional metamorphism.
Uses & applications
Used primarily as decorative landscaping gravel, specimen collecting, and occasionally carved into small ornaments.
Geological facts
White quartz veins cutting through darker host rock are prominent geological markers of historical gold-bearing shear zones.
Field identification & locations
Identify by contrasting white quartz veins slicing through dense, greenish weathered volcanic rock. Common in ancient shields and mountainous regions.
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