71 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-03-14 16:27:45
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72 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2010-07-27 10:30:01
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73 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-03-21 11:02:13
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74 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-03-21 10:53:22
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75 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-08-13 15:30:31
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76 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-02-11 15:15:31
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77 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-08-29 10:58:51
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78 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2010-08-17 11:46:21
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79 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2010-04-06 09:11:48
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80 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-03-04 13:47:35
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