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^[[Geol]]

23

Investigation and Research

Exhibition problems seriously affected research in the Division of Mineralogy and Petrology, have almost halted research in the Division of Invertebrate Paleontology and Paleobotany, and have halted Dr. Dunkle's efforts and seriously impeded Dr. Gazin's efforts. 

Division of mineralogy and petrology.-- Curator George Switzer completed the annual review of the diamond industry, and continued work on a long-term research project dealing with the sulfate and related minerals. Other minerals under investigation by him are paradamite from Mapimi, Mexico, fornacite from Tiger, Ariz., and hambergite from San Diego County, Calif.

Associate curator Edward P. Henderson completed a study of the Jalandhar meteorite. This iron meteorite is reported to have fallen in India in 1621 and was made into a knife which was presented to Emperor Jahangir. Other work in progress includes a study of the geographic distribution of hexahedrites, investigation of the metallic inclusions in iron meteorites, study of the morphology of meteorites, and descriptions of several unstudied or incorrectly described meteorites in the collection.

Associate curator Paul E. Desautels continued a long-range research project on the lead oxychloride minerals from Laurium, Greece, and began work on the description of a new Mexican locality of the rare mineral legrandite.