61 | Add to Reading ListSource URL: borel.slu.eduLanguage: English - Date: 2007-06-11 16:21:44
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62 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-01-29 12:04:20
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63 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2010-01-27 10:06:21
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64 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-01-24 14:42:17
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65 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-01-25 08:21:59
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66 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2000-03-06 13:02:53
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67 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2001-02-01 13:48:09
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68 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2008-02-01 10:06:13
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69 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-03-07 17:03:08
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70 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2004-03-30 09:52:30
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