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<br />orrZl72"~" . <br /> <br />.. <br /> <br />Other Minerals <br /> <br />'Deposits of limestone, silica, gypsum, and clay, as well as sand <br /> <br />and gravel, occur in the area. These deposits are uneconomical either <br /> <br />because local deposits are too low grade, similar deposits occur closer <br /> <br />to markets, size of deposits does not warrant mining, or a combination <br /> <br />of such'factors. <br /> <br />CONCLUSIONS <br /> <br />Commercial coal occurs east and west of the Monument, but not <br /> <br />within the Monument or the Green River corridor study area. <br /> <br />.---~ .._------_._~-- -------------.----- ..~. --. <br /> <br />Uranium producers' interest in the Browns Park Formation has increased <br /> <br />markedly since both uranium and foreign oil prices escalated. Areas <br /> <br />containing Browns Park sediments, such as Browns Park itself, have <br /> <br />attracted renewed exploration studies. <br /> <br />Oil and Jias production is found around <br />A.7Inti4! <br />productio~within the corridor is virtually <br /> <br />the study area, but such <br /> <br />nonexistent in the river <br /> <br />segment upstream from Browns Park. A similar river segment is found <br /> <br />from the Gates of Lador downstream appro~imately 14 miles (22~ km). <br /> <br />. <br />Browns Park and most of the rest of the corridor have a small potential <br /> <br />owing to the presence of a relatively thin sedimentary section. <br /> <br />Oil shale in the Green River Formation is widespread, but deposits <br /> <br />near the Monument are of lower grade than in other areas. No deposits <br /> <br />are located in the corridor area. <br /> <br />Tuff occurs in a known deposit within the river corridor, but <br /> <br />development has not yet taken place. <br /> <br />. <br /> <br />19 <br /> <br /> <br />i' <br />, <br /> <br />I <br /> <br />I <br />