15016 D23-1 Barroisite, Irazuyama (Iratsuyama), Doi, Shikokuchuo City, Ehime Prefecture, Japan

Small dark olive-green grains and prismatic cleavages of barroisite in schist. Material originally from Yosuke Ito in 1982 and purchased from Minerals Unlimited the same year. This may in fact be a different amphibole species, following recent revision of the amphibole group. Ex Andrew Hodgson Collection.

Click on the image below for a higher resolution version. Andrew Hodgson photo.