31 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-05-29 10:40:39
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32 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2008-01-31 15:06:36
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33 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-08-01 08:56:44
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34 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-01-24 15:16:25
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35 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-08-13 10:28:31
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36 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2007-01-17 14:21:54
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37 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-08-19 09:22:32
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38 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2004-03-24 14:53:10
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39 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-01-24 13:44:09
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40 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-08-15 11:49:57
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