81 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2008-01-31 15:00:24
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82 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2010-03-22 14:57:28
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83 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-01-29 11:17:58
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84 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-03-07 15:16:08
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85 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-05-29 10:00:14
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86 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-08-15 11:04:12
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87 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-01-13 14:06:43
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88 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-02-12 15:22:34
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89 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1998-02-20 06:54:20
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90 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2004-09-14 10:51:30
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