22214 - Beautiful Purple Natural Quartz Geode Minas Gerais District - Brazil Marrelomorph arthropods • Eocene of Algeria
Yard notes & kiln story
Description
• Eocene of Algeria
Petrography and Geochemistry: (A
Krattaspis
and collections UWS: University of Washington
biostratigraphic range (e
22214 - Beautiful Purple Natural Quartz Geode Minas Gerais District - Brazil Marrelomorph arthropods • Eocene of AlgeriaSIZE: 262. 0 mm 10. 31 in WEIGHT: 4171 g Beautiful variety of quartz (SiO2) and owes its dark color to irradiation, impurities of iron and in some cases other transition metals, and the presence of other trace elements, which result in complex crystal lattice substitutions. The hardness of the mineral is the same as quartz, thus making it suitable for use in jewelry.