metamorphic
Quartz Vein in Green Schist
Silicon Dioxide (Quartz) and metamorphic silicate minerals
AI-generated identification · may be incorrectHardness of 7 for the quartz top, variable lower hardness for the green schist; vitreous luster on the quartz portion with a green, foliated matrix below; uneven fracture.
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Physical properties
Hardness of 7 for the quartz top, variable lower hardness for the green schist; vitreous luster on the quartz portion with a green, foliated matrix below; uneven fracture.
Formation & geological history
Formed via hydrothermal fluid deposition filling fractures in pre-existing rock, later subjected to regional metamorphism.
Uses & applications
Used primarily as a geological specimen, lapidary study, and educational tool.
Geological facts
Quartz veins often host valuable ore minerals like gold, though this specimen shows a barren vein cutting a greenstone or schist host.
Field identification & locations
Easily identified by the stark contrast between the translucent white quartz cap and the greenish micaceous or chloritic host rock beneath.
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