Mineralpedia Details for Aerinite
Named after the Greek word aerinos, meaning “airy,” in reference to the mineral’s typical sky blue color. Aerinite is a rare mineral that occurs at its French locality at Saint Pendelon as “a hydrothermal mineral of the zeolite facies, formed at relatively low temperatures in fractures cutting mafic igneous rocks” in association with prehenite, scoleite, and mesolite. Additional localities for aerinite include in Spain and the United States.
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/aerinite.pdf
Aerinite from Estopiñán del Castillo, Aragón, Spain
Compact fibrous rich blue mineral composing most of matrix.
Aerinite from Aran Valley, Lerida, Catalonia, Spain
Dull blue mass.