https://www.usgs.gov/publications/simmonsite-na2lialf6-a-new-mineral-zapot-amazonite-topazzinnwaldite-pegmatite
Simmonsite, Na2LiAlF6, a new mineral of pegmatitic-hydrothermal origin, occurs in a late-stage breccia pipe structure that cuts the Zapot...
a newfrom thesimmonsitemineralamazonite