Piedmontite and scheelite from the ancient rhyolite of South Mountain, Pennsylvania

• 1 July 1893
• journal article
• Published by American Journal of Science (AJS) in American Journal of Science
• Vol. s3-46  (271) , 50-57
• https://doi.org/10.2475/ajs.s3-46.271.50

Abstract

Keywords

• SOUTH MOUNTAIN
• ANCIENT RHYOLITE
• PENNSYLVANIA
• PIEDMONTITE AND SCHEELITE