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Section 1 <br />Introduction <br />• <br />Exhibit 1-3. Dominant Ore Minerals at Sunday Mines,Group.+ <br />Ore <br />Type Dominant Ore <br />Minerals Molecular Formula General Color of <br />Ore Minerals <br />Type 1 Carnotite KZ Oz 2V20s 3 20 Red, yellow and <br /> T u amunite Ca U02 2V20s -5-S 20 brown <br /> Vanadium Clay unknown <br /> Hewettite CaV6016 9 20 <br />Type 2 Corvusite Na,Ca, Vs020 4(H20) Off-shades of black <br /> Hewettite CaV6016 9 H2O to bluish black, <br /> Doloresite H8V6016 greenish black and <br /> Vanadium Clay unknown brown <br /> Rauvite Ca U02 2VloO2s -16H2O <br />Vanadium-uranium mineralization is visually apparent in rock at the Sunday Mines Group as <br />fine grained black disseminations along preferential beds in underground workings and fresh <br />ore, and as local black, yellow and greenish-yellow disseminations and fracture coatings in <br />oxidized development rock and stockpiled ore. It is likely that rock ore currently being mined in <br />the Sunday Mines Group tends more towards the Type 2 classification of Botinelly and Weeks, <br />which is relatively less oxidized than Type 1 ore. <br />Within the development rock piles, surficial oxidation of the weakly mineralized Top Rim <br />sandstone rock causes the vanadium-uranium minerals to alter to more oxidized forms. <br />Additional information regarding sample mineralogy including microprobe analyses of selected <br />samples is presented in Attachment 1, which is described further in Section 4. <br />0 a <br />The Top Rim sandstone is the dominant rock type present in the development rock and ore <br />stockpiles. It is commonly medium grained, well rounded, gray sandstone with calcite cement. <br />The grain size of the rock particles ranges from fine sand to boulders. The median diameter is <br />approximately 2 inches based on a general visual evaluation. Local zones also contain reddish- <br />brown calcareous sandstone, which was mined from units adjacent to the Top Rim sandstone. <br />• <br />CM 1-5 <br />T:1649864Dentaon Mines%Task Order 3 - DMO Sampling and Analysis PlanlTask 3.12 - Soil, Ore, Rock Data Assessment Report\Sunday Rock RepoMfinal reporAReporltFinal Sunday Mims Group Sell Ore Rock <br />Date Assessment Report_951509.doc