61 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1997-11-12 14:57:42
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62 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-05-29 12:50:53
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63 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-06-27 16:55:47
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64 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2006-08-15 09:02:43
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65 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-07-16 14:29:40
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66 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-06-27 10:16:54
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67 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2006-01-18 14:42:21
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68 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-08-30 17:20:16
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69 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-04-15 15:22:22
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70 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-03-07 15:45:50
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