| Show COPPER IN THE HARTVILLE UPLIFT north and east of north platte river in east central wyoming is a broad low domal mountain mass with a maximum height of about feet above sk set level which is known as the hartville uplift and which is similar in many respects to the black hills of south dakota throughout this entire area copper is so widely distributed tri buted that although no large deposit has yet been discovered valuable beds of ore may at any time be found during the field season of 1906 sydney H ball of the united states geological survey while investigating the iron ores of this region visited the copper mines and prospects an account of this work is published by the survey in its annual volume en n economic geology bulletin no copies of which may be obtained on application mr ball gives an account of the history and production of the region and describes the ore deposits which occur in the form of fissure veins or globular masses of ore that outcrop at the surface and pinch out slight depths and blanket or bedded deposits the fissure veins have not been sufficiently developed to establish their character beyond doubt |
