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2.3" Prase Quartz Crystals - Mongolia
This is a beautiful cluster of green prase quartz crystals that were collected from the Huanggang Mine in Mongolia. The green color of the quartz can most likely be attributed to hedenbergite inclusions within the quartz. These needle-like inclusions become apparent when backlighting the crystal and looking at the crystal's termination.
About Quartz
Quartz is the name given to silicon dioxide (SiO2) and is the second most abundant mineral in the Earth's crust. Quartz crystals generally grow in silica-rich environments--usually igneous rocks or hydrothermal environments like geothermal waters--at temperatures between 100°C and 450°C, and usually under very high pressure. In either case, crystals will precipitate as temperatures cool, just as ice gradually forms when water freezes. Quartz veins are formed when open fissures are filled with hot water during the closing stages of mountain formation: these veins can be hundreds of millions of years old.
Quartz is the name given to silicon dioxide (SiO2) and is the second most abundant mineral in the Earth's crust. Quartz crystals generally grow in silica-rich environments--usually igneous rocks or hydrothermal environments like geothermal waters--at temperatures between 100°C and 450°C, and usually under very high pressure. In either case, crystals will precipitate as temperatures cool, just as ice gradually forms when water freezes. Quartz veins are formed when open fissures are filled with hot water during the closing stages of mountain formation: these veins can be hundreds of millions of years old.
SPECIES
Quartz var. Prase (Hedenbergite inclusions)
LOCATION
Huanggang Mine, Chifeng, Inner Mongolia
SIZE
2.3 x 1.7"
CATEGORY
SUB CATEGORY
ITEM
#112174
