61 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1996-08-20 09:38:59
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62 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-09-19 18:42:39
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63 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-04-15 15:31:17
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64 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2008-02-01 09:00:11
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65 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2003-02-11 11:25:02
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66 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2000-02-01 12:15:33
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67 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-08-24 09:17:43
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68 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-12-19 13:03:04
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69 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2007-02-22 08:15:04
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70 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2005-01-12 11:06:43
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