![60.0 Semi-schistose jadeite-lawsonite metawacke. Hospital Creek area, NE Diablo Range, California. Some gray, glassy quartz grains, a few green chlorite grains, and many white grains that are plagioclase grains partly to entirely replaced by jadeite (pyroxene) are visible. Microscopic and X-ray analyses indicate that the goethite (?)-stained matrix material is a mix of glaucophane, chlorite, white mica, and chlorite-vermiculite minerals. [Scale shows cm divisions.]](../60.0.JPG)
60.0 Semi-schistose jadeite-lawsonite metawacke. Hospital Creek area, NE Diablo Range, California. Some gray, glassy quartz grains, a few green chlorite grains, and many white grains that are plagioclase grains partly to entirely replaced by jadeite (pyroxene) are visible. Microscopic and X-ray analyses indicate that the goethite (?)-stained matrix material is a mix of glaucophane, chlorite, white mica, and chlorite-vermiculite minerals. [Scale shows cm divisions.]