81 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-03-10 11:54:54
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82 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-11-04 12:20:53
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83 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2010-06-28 11:17:34
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84 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-02-28 11:37:33
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85 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2010-06-03 10:00:45
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86 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2010-10-18 12:45:15
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87 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2010-08-06 10:47:27
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88 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-07-29 13:39:47
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89 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-03-15 15:42:10
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90 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-08-30 12:00:08
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