21![](/pdf-icon.png) | Add to Reading ListSource URL: minerals.usgs.gov- Date: 2009-01-29 14:11:25
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22![](/pdf-icon.png) | Add to Reading ListSource URL: minerals.usgs.gov- Date: 2017-12-20 10:40:15
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23![](/pdf-icon.png) | Add to Reading ListSource URL: minerals.usgs.gov- Date: 2012-02-27 09:43:02
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24![](/pdf-icon.png) | Add to Reading ListSource URL: minerals.usgs.gov- Date: 2011-01-24 11:17:43
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25![](/pdf-icon.png) | Add to Reading ListSource URL: minerals.usgs.gov- Date: 2018-04-13 14:01:37
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26![](/pdf-icon.png) | Add to Reading ListSource URL: minerals.usgs.gov- Date: 2016-11-21 09:26:09
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27![](/pdf-icon.png) | Add to Reading ListSource URL: minerals.usgs.gov- Date: 2018-02-16 07:30:00
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28![](/pdf-icon.png) | Add to Reading ListSource URL: minerals.usgs.gov- Date: 2018-01-03 10:28:47
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29![](/pdf-icon.png) | Add to Reading ListSource URL: minerals.usgs.gov- Date: 2007-12-03 10:51:13
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30![](/pdf-icon.png) | Add to Reading ListSource URL: minerals.usgs.gov- Date: 2004-09-14 10:12:18
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