Coalingite (very rare)

Item Description

Coalingite is a very rare magnesium iron hydroxy carbonate mineral, and while it was named after the city of Coalinga in California (which lies in Fresno County), the best known specimens are those from San Benito County. This piece is from the Clear Creek Deposits in the New Idria District and features a good amount of micro-crystalline, dark golden-brown colored Coalingite associated with cream-white colored patches of Hydromagnesite on host rock matrix. The piece is best seen under magnification, but even with the naked eye it makes an impression, as it's actually a fairly showy small cabinet display specimen. A great rarity for any fan of minerals of California or simply worldwide rare minerals. From the collection of Colin Manlove.