Description
Richterite (Sodium Calcium Magnesium Iron Silicate Hydroxide), which is sometimes called soda tremolite, is closely related to Tremolite. It basically is the sodium rich version of Tremolite which is calcium rich. Another closely related mineral is Ferrorichterite, which has replaced the magnesium with iron. Yet another related mineral is Fluororichterite, of which this specimen is a fine example, enriched in fluorine by replacing some or all of the hydroxides. This is a fine representative for the species.