Samples of mica-schist and mica-gneiss wall rocks of some New England pegmatites were found, by spectrographic analysis, to contain lithium, beryllium, zinc, tin, lead, columbium, molybdenum, and cerium in extremely low concentrations. The highest concentration of beryllium obtained was 0.0021 percent Be. It is thought likely that these elements were added to the wall rocks by solutions emanating from nearby channels of circulation of pegmatitic liquors during the time of emplacement of the pegmatite bodies. At least part of the added chemical elements found lodging as minor elements within common, rock-forming minerals, possibly as a result of recrystallization of these minerals in the presence of the introduced solutions.

This content is PDF only. Please click on the PDF icon to access.

First Page Preview

First page PDF preview
You do not currently have access to this article.