Excerpt from The Mineralogical Magazine and Journal of the Mineralogical Society, 1884, Vol. 5 Greg wrote to me, expressing his surprise that a mineral so commo

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced

Excerpt from The Mineralogical Magazine and Journal of the Mineralogical Society, 1900, Vol. 12 On some lead minerals from Laurium, namely, Laurionite, Phos gen

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced