61 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-02-08 14:14:13
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62 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2009-02-02 08:29:18
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63 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2006-08-15 09:12:13
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64 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2010-01-27 09:54:18
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65 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1999-02-05 09:20:43
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66 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-05-31 10:49:52
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67 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2001-02-01 13:42:12
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68 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2004-09-14 12:49:30
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69 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-03-07 16:39:58
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70 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2002-02-14 12:59:52
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