31 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-03-30 14:22:58
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32 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-12-06 13:32:31
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33 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-04-15 15:09:35
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34 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-02-06 14:48:23
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35 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-10-18 15:08:37
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36 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-02-12 15:22:30
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37 | Add to Reading ListSource URL: www.advenser.comLanguage: English - Date: 2014-05-16 06:15:11
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38 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-08-03 13:11:49
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39 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-05-31 12:02:28
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40 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-08-06 08:58:33
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