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JD -6 Mine Environmental Protection Plan 33 <br />subsequent tectonic effects on a local as well as regional scale (Geoscience Services, 2005) related to the <br />salt dome in the Paradox Basin. <br />6,000 — <br />5,200— <br />Qis <br />Jmb <br />Jms <br />Duggan Adit <br />Js <br />Jec <br />Jk <br />Jw _ -- — <br />TRc <br />Jms <br />Js <br />- ; <br />Jk <br />Jw <br />TRc <br />1 <br />Figure 8. Generalized Stratigraphic Cross Section of the JD -6 Mine <br />9.1.3 Economic Geology <br />The JD -6 Mine is located in the Uravan Mineral District, which is characterized by its uranium - vanadium <br />ore deposits. These ore deposits contain a distinctive suite of elements including vanadium, molybdenum, <br />and selenium. Other base metals including thallium are present within the ore bodies, but are present in <br />low concentrations. The uranium and vanadium at the JD -6 Mine typically mineralizes as roll and tabular <br />layers approximately 3.75 feet thick within the Third Rim of the Salt Wash Member of the Morrison <br />Formation. Ore deposits are typically seen in channel sandstone. Within the Third Rim Sandstone, there <br />are two points of interest for ore deposits. The first appears at a depth of six hundred thirty to six hundred <br />fifty feet near the middle of the Third Rim. The other is seen at a depth of seven hundred to seven hundred <br />twenty five feet closer to the bottom of the Third Rim (Cotter, 1984). <br />The mineralization of the JD -6 Mine is much like the rest of the Uravan Mineral District. The uranium <br />occurs in the form of uraninite (pitchblende variety U0) with traces of coffinite (USiO,OH) filling in the <br />pore space between individual sand grains (Peters, 2011). The uraninite occurs as a more massive, darker <br />colored mineral (Nininger, 1954). When oxidized, these minerals may become much brighter in color and <br />reveal secondary minerals such as corvusite, ravite, and pascoite (Peters, 2011). These oxidation minerals <br />are often seen in conjunction with uraninite in the Uravan Mineral District. <br />The primary vanadium mineral is montroseite (VOOH) in conjunction with vanadium clays and hydromica. <br />Carnotite and tyuyamunite are also commonly seen vanadium minerals after oxidation of the ore occurs. It <br />is possible that other oxidized minerals occur on the JD -6 Mine site. The presence of other cations, <br />increased moisture levels, and differing pH levels may enable other vanadium oxides to form over time <br />(Peters, 2011). <br />4148A.120927 Whetstone Associates <br />6,000 <br />5,600 <br />-- 5,200 <br />