This Specimen has been sold.
3.7" Quartz Crystal Cluster - Peru
This is beautiful cluster of quartz crystals that was collected from the Huanzala Mine in Peru. The entire specimen measures 3.7" wide and formed from a pyrite matrix (underside of specimen contains pyrite crystals).
Silicon Dioxide, also known as SiO2 or Quartz, is the second most abundant mineral in the Earth's crust. Quartz crystals generally grow in silica-rich, hot watery solutions called hydrothermal environments, at temperatures between 100°C and 450°C, and usually under very high pressure. Quartz veins are formed when open fissures are filled with hot water during the closing stages of mountains forming, and can be hundreds of millions of years old.