Ref.: Sueno, S., Matsuura, S., Bunno, M., and Kurosawa, M. (2002) Occurrence and crystal chemical features of protoferro-anthophyllite and protomangano-ferroanthophyllite from Cheyenne Canyon and Cheyenne Mountain, U.S.A. and Hirukawa-mura, Suisho-yama, and Yokone-yama, Japan. Journal of Mineralogical and Petrological Sciences: 97: 127-136.
An area of miarolytic cavities and pegmatites in granite quarries. Produced specimens abundantly in the past, but has almost dried up due to the quarries closing because of cheap granite imports from abroad.
