🕐04.03.10 - 17:01 Uhr
Mirasol channel samples further upgrade silver values at the Julia Vein, Santa Cruz, Argentina
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<div align="center" style="text-align: center;"><font size="+1" face="Arial, Helvetica, sans-serif" color="#000000"> Mirasol channel samples further upgrade silver values<br />
at the Julia Vein, Santa Cruz, Argentina </font></div>
<div style="font-family: Arial,Helvetica,sans-serif; font-size: 13px; text-align: justify;">
<p><strong>VANCOUVER, BC, March 4, 2010 - Mirasol Resources Ltd. (<a href=" MRZ</a>, Frankfurt: M8R)</strong>&#160;is pleased to announce that systematic sawn-channel sampling has returned high-grade silver values that significantly exceed previously reported average results for the Julia Vein at the Virginia Vein Zone. Best individual result from this round of sampling are 0.7 metres at 4,070 grams per ton (g/t) silver, and the best length weighted average result of 3.74 m at 1,592 g/t silver. These results confirm that Mirasol's 100%-owned Virginia Vein Zone is rapidly developing into an important high-grade silver project.</p>
<p>The Virginia Vein Zone was discovered in late 2009 by Mirasol geologists while following up alteration and structural targets on newly acquired claims at Mirasol's 100%-owned Santa Rita Project. The Virginia discovery, along with the Santa Rita Main and East silver prospects, consolidate Mirasol's position in an emerging silver district.&#160; The nearby Lejano property, held by an unrelated party, contains an historical non-43-101 compliant inferred resource of 14 million ounces of silver.</p>
<p>Channel sampling of the Julia Vein reported here comprises 128 saw-cut channel samples totaling 73.88 linear metres forming 44 composite channels across outcropping vein widths (<a href=" 1</a>). The length weighted average grade of all the channel samples is 796 g/t silver, which significantly exceeds the previously reported average grade of 696 g/t from 30 rock chip samples for the same vein (Feb. 16, 2010 news release). All samples have been analyzed using fire assay gravimetric method, which is considered to be a more accurate method for determining grade in strongly mineralized precious metal samples. Details of sampling procedures and calculations are available in an Appendix to this release (<a href=" here</a>).</p>
<p>In at least two locations detailed mapping and sampling indicate split veins, where individual vein splits reach significant true widths with strong silver values. At one location (JU-38713) three splits are present and at another (JU-38612) two splits are present.</p>
<p>The average outcropping vein width recorded from this sampling is 1.88 metres and the maximum width of continuously outcropping vein is 4.3 metres.&#160; However, vein widths of at least 5.88 metres are inferred in an area where outcrop is discontinuous. Vein widths reported are considered the minimum true widths of the vein at each channel sample location (Table 1 and Figure 1), as sampling was limited to the vein itself and the margins of the vein and adjoining wall rock are not exposed. Systematic trenching or drilling will be required to accurately determine full mineralized width of the vein structures and their grades.</p>
<p>Channel sampling has shown strong silver mineralization over the full 2,000 metre strike length of the Julia Vein. However two segments of the vein, interpreted to represent high-grade shoots, show significantly higher silver grades and greater minimum true widths (Figure 1). The northern segment of higher grades is 520 metres in length and has been tested by 14 channels returning assays of between 324 to 2,359 g/t silver with length weighted average of all channels of 934 g/t silver over a 1.84 metre minimum true width and a maximum channel width of 5.88 metres of 1,368 g/t silver. The southern segment containing higher grades has a 260 metre strike length comprising 13 channels that assayed 317 to 1,888 g/t silver, with a length weighted average grade of 727 g/t silver over a 1.75 metre minimum true width and a maximum channel width of 3.79 metres of 904 g/t silver.</p>
<p>Spatially between the northern and southern segments, grades and widths vary but include the highest grade channel of 0.7m at 4,070 g/t silver. Bedrock exposure here is intermittent and the significance of these highest values is yet to be determined.</p>
<p><strong>Table 1. Julia Vein Channel Samples - Compiled results</strong></p>
<table cellspacing="0" cellpadding="2" bordercolor="#000000" border="1" width="451" style="border-collapse: collapse; font-family: Arial,Helvetica,sans-serif; font-size: 12px;">
<tbody>
<tr>
<td width="64"><br />
Channel ID</td>
<td width="53">
<div align="center">Sampled Length (m) 1</div>
</td>
<td width="68">
<div align="center">Unsampled Gaps<br />
(m) 2</div>
</td>
<td width="45">
<div align="center">Gaps as % of Total Length</div>
</td>
<td width="48">
<div align="center">Total Length<br />
(m) 3</div>
</td>
<td width="71">
<div align="center">Silver&#160; (g/t) 4, 5</div>
</td>
<td width="72">
<div align="center">Lead<br />
(%) 4, 6</div>
</td>
</tr>
<tr>
<td nowrap="" width="64">
<div>JU-39985</div>
</td>
<td nowrap="" width="53">
<div align="right">0.78</div>
</td>
<td width="68">
<div align="right">&#160;</div>
</td>
<td width="45" valign="bottom">
<div align="right">&#160;</div>
</td>
<td nowrap="" width="48">
<div align="right">0.78</div>
</td>
<td nowrap="" width="71">
<div align="right">297</div>
</td>
<td nowrap="" width="72">
<div align="right">0.19</div>
</td>
</tr>
<tr>
<td nowrap="" width="64">
<div>JU-39921</div>
</td>
<td nowrap="" width="53">
<div align="right">0.82</div>
</td>
<td width="68">
<div align="right">0.04</div>
</td>
<td width="45" valign="bottom">
<div align="right">5%</div>
</td>
<td nowrap="" width="48">
<div align="right">0.86</div>
</td>
<td nowrap="" width="71">
<div align="right">236</div>
</td>
<td nowrap="" width="72">
<div align="right">0.56</div>
</td>
</tr>
<tr>
<td nowrap="" width="64">
<div>JU-39973</div>
</td>
<td nowrap="" width="53">
<div align="right">0.66</div>
</td>
<td width="68">
<div align="right">&#160;</div>
</td>
<td width="45" valign="bottom">
<div align="right">&#160;</div>
</td>
<td nowrap="" width="48">
<div align="right">0.66</div>
</td>
<td nowrap="" width="71">
<div align="right">419</div>
</td>
<td nowrap="" width="72">
<div align="right">0.12</div>
</td>
</tr>
<tr>
<td nowrap="" width="64">
<div>JU-39846</div>
</td>
<td nowrap="" width="53">
<div align="right">0.90</div>
</td>
<td width="68">
<div align="right">&#160;</div>
</td>
<td width="45" valign="bottom">
<div align="right">&#160;</div>
</td>
<td nowrap="" width="48">
<div align="right">0.90</div>
</td>
<td nowrap="" width="71">
<div align="right">2,359</div>
</td>
<td nowrap="" width="72">
<div align="right">0.59</div>
</td>
</tr>
<tr>
<td nowrap="" width="64">
<div>JU-39789</div>
</td>
<td nowrap="" width="53">
<div align="right">1.38</div>
</td>
<td width="68">
<div align="right">0.15</div>
</td>
<td width="45" valign="bottom">
<div align="right">10%</div>
</td>
<td nowrap="" width="48">
<div align="right">1.53</div>
</td>
<td nowrap="" width="71">
<div align="right">324</div>
</td>
<td nowrap="" width="72">
<div align="right">0.61</div>
</td>
</tr>
<tr>
<td nowrap="" width="64">
<div>JU-39699</div>
</td>
<td nowrap="" width="53">
<div align="right">0.86</div>
</td>
<td width="68">
<div align="right">0.09</div>
</td>
<td width="45" valign="bottom">
<div align="right">9%</div>
</td>
<td nowrap="" width="48">
<div align="right">0.95</div>
</td>
<td nowrap="" width="71">
<div align="right">875</div>
</td>
<td nowrap="" width="72">
<div align="right">0.51</div>
</td>
</tr>
<tr>
<td nowrap="" width="64">
<div>JU-39657</div>
</td>
<td nowrap="" width="53">
<div align="right">1.20</div>
</td>
<td width="68">
<div align="right">0.00</div>
</td>
<td width="45" valign="bottom">
<div align="right">&#160;</div>
</td>
<td nowrap="" width="48">
<div align="right">1.20</div>
</td>
<td nowrap="" width="71">
<div align="right">873</div>
</td>
<td nowrap="" width="72">
<div align="right">0.49</div>
</td>
</tr>
<tr>
<td nowrap="" width="64">
<div>JU-39649</div>
</td>
<td nowrap="" width="53">
<div align="right">2.08</div>
</td>
<td width="68">
<div align="right">0.27</div>
</td>
<td width="45" valign="bottom">
<div align="right">11%</div>
</td>
<td nowrap="" width="48">
<div align="right">2.35</div>
</td>
<td nowrap="" width="71">
<div align="right">767</div>
</td>
<td nowrap="" width="72">
<div align="right">0.48</div>
</td>
</tr>
<tr>
<td nowrap="" width="64">
<div>JU-39618 <sup>7</sup></div>
</td>
<td nowrap="" width="53">
<div align="right">1.50</div>
</td>
<td width="68">
<div align="right">0.95</div>
</td>
<td width="45" valign="bottom">
<div align="right">39%</div>
</td>
<td nowrap="" width="48">
<div align="right">2.45</div>
</td>
<td nowrap="" width="71">
<div align="right">633</div>
</td>
<td nowrap="" width="72">
<div align="right">0.99</div>
</td>
</tr>
<tr>
<td nowrap="" width="64">
<div>JU-39572</div>
</td>
<td nowrap="" width="53">
<div align="right">1.77</div>
</td>
<td width="68">
<div align="right">0.02</div>
</td>
<td width="45" valign="bottom">
<div align="right">1%</div>
</td>
<td nowrap="" width="48">
<div align="right">1.79</div>
</td>
<td nowrap="" width="71">
<div align="right">2,234</div>
</td>
<td nowrap="" width="72">
<div align="right">0.96</div>
</td>
</tr>
<tr>
<td nowrap="" width="64">
<div>JU-39526</div>
</td>
<td nowrap="" width="53">
<div align="right">4.30</div>
</td>
<td width="68">
<div align="right">&#160;</div>
</td>
<td width="45" valign="bottom">
<div align="right">&#160;</div>
</td>
<td nowrap="" width="48">
<div align="right">4.30</div>
</td>
<td nowrap="" width="71">
<div align="right">487</div>
</td>
<td nowrap="" width="72">
<div align="right">0.48</div>
</td>
</tr>
<tr>
<td nowrap="" width="64">
<div>JU-39474 <sup>7</sup></div>
</td>
<td nowrap="" width="53">
<div align="right">1.89</div>
</td>
<td width="68">
<div align="right">0.95</div>
</td>
<td width="45" valign="bottom">
<div align="right">33%</div>
</td>
<td nowrap="" width="48">
<div align="right">2.84</div>
</td>
<td nowrap="" width="71">
<div align="right">690</div>
</td>
<td nowrap="" width="72">
<div align="right">0.35</div>
</td>
</tr>
<tr>
<td nowrap="" width="64">
<div>JU-39454</div>
</td>
<td nowrap="" width="53">
<div align="right">2.42</div>
</td>
<td width="68">
<div align="right">0.19</div>
</td>
<td width="45" valign="bottom">
<div align="right">7%</div>
</td>
<td nowrap="" width="48">
<div align="right">2.61</div>
</td>
<td nowrap="" width="71">
<div align="right">749</div>
</td>
<td nowrap="" width="72">
<div align="right">0.59</div>
</td>
</tr>
<tr>
<td nowrap="" width="64">
<div>JU-39420 <sup>7</sup></div>
</td>
<td nowrap="" width="53">
<div align="right">1.62</div>
</td>
<td width="68">
<div align="right">1.01</div>
</td>
<td width="45" valign="bottom">
<div align="right">38%</div>
</td>
<td nowrap="" width="48">
<div align="right">2.63</div>
</td>
<td nowrap="" width="71">
<div align="right">1,399</div>
</td>
<td nowrap="" width="72">
<div align="right">0.40</div>
</td>
</tr>
<tr>
<td nowrap="" width="64">
<div>JU-39383</div>
</td>
<td nowrap="" width="53">
<div align="right">1.94</div>
</td>
<td width="68">
<div align="right">0.04</div>
</td>
<td width="45" valign="bottom">
<div align="right">2%</div>
</td>
<td nowrap="" width="48">
<div align="right">1.98</div>
</td>
<td nowrap="" width="71">
<div align="right">516</div>
</td>
<td nowrap="" width="72">
<div align="right">0.11</div>
</td>
</tr>
<tr>
<td nowrap="" width="64">
<div>JU-39372</div>
</td>
<td nowrap="" width="53">
<div align="right">2.52</div>
</td>
<td width="68">
<div align="right">0.09</div>
</td>
<td width="45" valign="bottom">
<div align="right">3%</div>
</td>
<td nowrap="" width="48">
<div align="right">2.61</div>
</td>
<td nowrap="" width="71">
<div align="right">466</div>
</td>
<td nowrap="" width="72">
<div align="right">0.31</div>
</td>
</tr>
<tr>
<td nowrap="" width="64">
<div>JU-39363 <sup>7</sup></div>
</td>
<td nowrap="" width="53">
<div align="right">3.26</div>
</td>
<td width="68">
<div align="right">2.62</div>
</td>
<td width="45" valign="bottom">
<div align="right">45%</div>
</td>
<td nowrap="" width="48">
<div align="right">5.88</div>
</td>
<td nowrap="" width="71">
<div align="right">1,368</div>
</td>
<td nowrap="" width="72">
<div align="right">1.55</div>
</td>
</tr>
<tr>
<td nowrap="" width="64">
<div>JU-39278</div>
</td>
<td nowrap="" width="53">
<div align="right">0.70</div>
</td>
<td width="68">
<div align="right">&#160;</div>
</td>
<td width="45" valign="bottom">
<div align="right">&#160;</div>
</td>
<td nowrap="" width="48">
<div align="right">0.70</div>
</td>
<td nowrap="" width="71">
<div align="right">4,740</div>
</td>
<td nowrap="" width="72">
<div align="right">2.00</div>
</td>
</tr>
<tr>
<td nowrap="" width="64">
<div>JU-39243</div>
</td>
<td nowrap="" width="53">
<div align="right">1.56</div>
</td>
<td width="68">
<div align="right">0.12</div>
</td>
<td width="45" valign="bottom">
<div align="right">7%</div>
</td>
<td nowrap="" width="48">
<div align="right">1.68</div>
</td>
<td nowrap="" width="71">
<div align="right">169</div>
</td>
<td nowrap="" width="72">
<div align="right">1.85</div>
</td>
</tr>
<tr>
<td nowrap="" width="64">
<div>JU-39189</div>
</td>
<td nowrap="" width="53">
<div align="right">0.84</div>
</td>
<td width="68">
<div align="right">&#160;</div>
</td>
<td width="45" valign="bottom">
<div align="right">&#160;</div>
</td>
<td nowrap="" width="48">
<div align="right">0.84</div>
</td>
<td nowrap="" width="71">
<div align="right">192</div>
</td>
<td nowrap="" width="72">
<div align="right">0.38</div>
</td>
</tr>
<tr>
<td nowrap="" width="64">
<div>JU-39124</div>
</td>
<td nowrap="" width="53">
<div align="right">3.49</div>
</td>
<td width="68">
<div align="right">0.11</div>
</td>
<td width="45" valign="bottom">
<div align="right">3%</div>
</td>
<td nowrap="" width="48">
<div align="right">3.60</div>
</td>
<td nowrap="" width="71">
<div align="right">1,089</div>
</td>
<td nowrap="" width="72">
<div align="right">1.30</div>
</td>
</tr>
<tr>
<td nowrap="" width="64">
<div>JU-39120</div>
</td>
<td nowrap="" width="53">
<div align="right">3.57</div>
</td>
<td width="68">
<div align="right">0.17</div>
</td>
<td width="45" valign="bottom">
<div align="right">5%</div>
</td>
<td nowrap="" width="48">
<div align="right">3.74</div>
</td>
<td nowrap="" width="71">
<div align="right">1,592</div>
</td>
<td nowrap="" width="72">
<div align="right">1.82</div>
</td>
</tr>
<tr>
<td nowrap="" width="64">
<div>JU-39030 <sup>7</sup></div>
</td>
<td nowrap="" width="53">
<div align="right">1.05</div>
</td>
<td width="68">
<div align="right">0.63</div>
</td>
<td width="45" valign="bottom">
<div align="right">37%</div>
</td>
<td nowrap="" width="48">
<div align="right">1.68</div>
</td>
<td nowrap="" width="71">
<div align="right">160</div>
</td>
<td nowrap="" width="72">
<div align="right">0.24</div>
</td>
</tr>
<tr>
<td nowrap="" width="64">
<div>JU-39035</div>
</td>
<td nowrap="" width="53">
<div align="right">0.85</div>
</td>
<td width="68">
<div align="right">0.20</div>
</td>
<td width="45" valign="bottom">
<div align="right">19%</div>
</td>
<td nowrap="" width="48">
<div align="right">1.05</div>
</td>
<td nowrap="" width="71">
<div align="right">305</div>
</td>
<td nowrap="" width="72">
<div align="right">0.52</div>
</td>
</tr>
<tr>