Abstract
A new system of a cathodoluminescence microscope with high sensitivity was constructed by combining a scanning electron microscope and a digital image processor. Growth zonings in needle crystals of coated diamonds, igneous quartz and relict olivine in a chondrite were first observed by using the microscope at high incident beam current. The fact that the growth zoning due to the faint chemical variations were detected indicates the validity of the present system in the study of growth history such as morphological change of minerals.
