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2 results for “Fe-Oxide”
Enhanced Sequestration of Organic Matter and Phosphate by Fe-oxides Generated from Abiotic Fe(II) Oxidation in the Presence of Heavy Metals
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Video 7.4 Fe-oxide M23
<p>Video 7.4 Fe-oxide M23 LA-ICP-MS trace element accessory mineral maps, Klungen quarry sample RC180801 </p> <p>In these maps, the darkest purple colours indicate very low (or absent) concentrations of the element for that map. With increasing concentrations of that element, the colour changes across the spectrum from purple through blue, with the brightest cyan tones indicating "very high" concentrations of that element, with respect to the total amounts of that element measured for each sample. For the trace elements the highest concentrations may be only a few ppm, yet still be represented by the bright blue shades for one or more crystals, in contrast to the total absence (very dark purple to black), or much lower levels (brighter purple) of the other crystals analysed. Therefore, the below list of element concentration maps included in this film also indicates which of these elements are the major elements (dominate) of a given crystal, and which are trace elements. </p> <p>The video sequence (approximate times) is: </p> <ul> <li>00:00 The locations of Klungen steatite quarry</li> <li>00:09 photos of Klungen quarry</li> <li>00:17 hand sample RC180801 from either Klungen quarry</li> <li>00:20 reflected light image of the spinel crystal analysed as map M23</li> <li>00:24 Cr (patchy distribution in the spinel crystal)</li> <li>00:26 false colour map of the minerals in the sample, with spinel Cr > 30 = purple </li> <li>00:29 false colour map of the minerals in the sample, with spinel Cr > 50 = purple </li> <li>00:30 false colour map of the minerals in the sample, with spinel Cr > 100 = purple </li> <li>00:34 false colour map of the minerals in the sample, with spinel Cr > 200 = purple </li> <li>00:37 false colour map of the minerals in the sample, with spinel Cr > 300 = purple </li> <li>00:39 false colour map of the minerals in the sample, with spinel Cr > 500 = purple </li> <li>00:41 Cr (patchy distribution in the spinel crystal)</li> <li>00:43 Fe (dominant in the Fe-oxide)</li> <li>00:45 Co (trace amounts in the chlorite)</li> <li>00:47 V (trace amounts in the Fe-oxide)</li> <li>00:50 Al (dominant in the chlorite)</li> <li>00:52 Mn (low levels in the ilmenite)</li> <li>00:54 Mg (dominant in the talc and chlorite)</li> <li>00:56 Ti (dominant in the ilmenite)</li> <li>00:58 the reflected light image of the crystals (repeated)</li> <li>01:01 A collage of all of those maps surrounding the reflected light image.</li> </ul>
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