2.1" Sky-Blue, Botryoidal Aragonite Formation - Yunnan Province, China
This is a beautiful formation of aragonite, collected from the Yunnan Province of China. This specimen has a botryoidal habit/texture and a wonderful sky-blue coloration. It measures 2.1" by 1.4".
Aragonite is a carbonate mineral with the chemical composition of CaCO3. It is a pseudomorph after calcite and varies in colors depending on impurities. It displays a translucent to white color when pure, and when impure can vary between yellow, green, pink, blue and brown. Typically forming in low temperature hydrothermal veins, It is also known to form in hot springs, as precipitates from chemicals in sedimentary rock, and in some cases as crystals in fossilized sea creatures.