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0 <br />r 1 <br />U <br />Section 3 <br />Results <br />The results of the EMP analyses are summarized in Table 3-1. <br />Table 3-1- Summary of EMP Results <br />Objective Result <br />Determination of the mineral phases with Arsenic is associated with iron sulfide <br />which arsenic is associated [ND-10,566 mg/ kg] (consistent with pyrite <br /> and/or marcasite), vanadium minerals <br /> [ND-3,848 mg/ kg] and/or uranium <br /> minerals [ND-1,451 mg/kg]. Much less <br /> commonly, arsenic is associated with iron <br /> oxyhydroxides [ND-2,513 mg/kg], sulfates <br /> [ND-1,414 mg/ kg], and selenates [1,889 <br /> mg/ kg]. <br />Determination of the form of arsenic Arsenic is most frequently present as a <br /> trace constituent within other minerals. In <br /> sample ore-2-mag, a significant fraction of <br /> the arsenic was associated with vanadium- <br /> bearing clays, which may be adsorbed. <br />Determination of the leachability of arsenic Most of the arsenic is liberated (i.e. not <br /> enclosed within relatively inert minerals <br /> such as quartz). The leachability of arsenic <br /> will be dependent on the solubility of the <br /> host mineral within the leaching solution <br /> under consideration. <br />A more detailed description of the arsenic mineralogy, forms, and leachability for each <br />sample is presented in the following sections. <br />3.1 Sample v4wr-l-non <br />The main form of arsenic in sample v4wr-1-non was iron sulfide. Based on the relative <br />concentrations of iron compared to sulfur, the phase is most likely pyrite of marcasite <br />8 <br />TA64986-Denison Mines\Task Order 3 - DMO Sampling and Analysis Plan\Task 3.12 - Soil, Ore, Rock Data Assessment Report\Bioavailability\DmisonEMPText02l7O9 (2).doc