The St. Peters Dome—Stove Mountain area near Colorado Springs, El Paso County, Colo., has been the source of many unusual minerals found in pegmatites in the Pikes Peak granite. One of the rarer minerals of these pegmatites is genthelvite, the zinc member of the helvite group. Until recently this species was represented only by a single small specimen discovered in the 1890's and now in the Genth Collection at Pennsylvania State College, State College, Pa.

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