Rare, strontium-rich member of Clinozoisite with one of the calcium atoms replaced by strontium. It is named after the type locality of Niigata Prefecture, Japan, and is scientifically categorized as an individual mineral species. Niigataite was renamed to Clinozoisite-(Sr) by the IMA in 2006.
See the full Clinozoisite page for properties, photos, and additional varieties.
