81 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-11-20 11:51:46
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82 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-12-30 17:16:00
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83 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-07-03 11:19:12
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84 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-09-13 16:11:56
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85 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-10-30 07:59:02
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86 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-05-28 13:54:12
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87 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2006-08-15 10:35:54
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88 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2007-09-17 12:33:34
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89 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2000-01-31 09:56:13
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90 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2004-09-14 10:35:48
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