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		Back to Bulletins Minerals of Ohio Bulletin 69—by Ernest H. Carlson, 155 p., 32 maps and line drawings, 32 black-and-white photos, 11 tables, and four plates of color photos of Ohio minerals, 1991. Price: $11.00 (plus tax and shipping/handling). This bulletin lists known occurrences for 45 minerals in the state. The geological occurrence of minerals in Ohio is discussed, as well as how to collect and identify minerals. A key to Ohio mineral species and a by-county listing of Ohio minerals are provided. Selected localities for mineral-collecting field trips are described. Call 614-265-6576 to order