Crystals of zircon up to 714 inches long and 1/16 to 1/8 inch in diameter occur in a basic pegmatite in the SW 14 of section 29, T 45 N, R 2 W, about 2 miles north of the town of Mcllen, Wisconsin. The pegmatite, which is about 112 feet wide, cuts the gabbro country rock. It contains large crystals of basic plagioclase, hornblende and biotite, penetrated by the needles of zircon.

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