61 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2006-01-23 09:30:48
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62 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-04-24 14:46:21
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63 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-06-25 14:00:47
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64 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2008-04-08 18:10:58
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65 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-04-05 14:29:34
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66 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-04-10 13:24:38
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67 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2009-02-02 09:28:44
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68 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-06-21 11:16:05
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