Ericaite (manganese boracite), anhydrite - Hänigsen potash mine, Burgdorf, Hanover, Germany
 Former Peter Pichler Collection, 1968
 Almost 1 cm large ericaite crystal in anhydrite from the Niedersachsen-Riedel potash mine!
 This extremely rare mineral was discovered by Hans Werner in 1950. The name refers to the botanical name Erica for heather and its often reddish-violet color.