Glaucophane from eastern Pennsylvania. Bulletin of the AMNH ; v. 32, article 34.

Knopf, Eleanora Frances Bliss, b. 1883.2005-10-062005-10-061913http://hdl.handle.net/2246/1756p. 517-526 : ill., map ; 24 cm.Includes bibliographical references.1571251 bytesapplication/pdfen-USQH1 .A4 vol.32, art.34, 1913Amphiboles -- Pennsylvania -- Berks County.Minerals -- Pennsylvania -- Berks County.Petrology -- Pennsylvania -- Berks County.Glaucophane from eastern Pennsylvania. Bulletin of the AMNH ; v. 32, article 34.text