61 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2008-01-31 14:27:01
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62 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2004-03-24 09:51:30
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63 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-12-04 11:59:17
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64 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2007-01-16 12:14:00
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65 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-04-19 13:50:45
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66 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2007-12-17 10:53:41
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67 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2002-11-04 16:11:06
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68 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2006-01-18 11:56:07
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69 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-08-03 09:09:59
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70 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-12-12 11:58:24
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