Meionite, Ferro-actinolite
Jail Hill Road locality, Haddam, Middlesex County, Connecticut, USA
Dark green ferro-actinolite crystals with frosty, massive, pale-colored meionite (see child photo of EDS spectrum). Labeled as "tirodite" (later = parvowinchite, after 2012 = ghoseite/ferro-ghoseite), which is a Mn amphibole, so that ID has some credibility in this Mn-rich deposit, but an XRD analysis could not confirm this amphibole was ...
© 2020 Harold Moritz