81 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2001-02-01 13:12:01
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82 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1996-08-20 09:43:29
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83 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2003-02-11 12:09:16
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84 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-04-28 17:21:29
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85 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-07-05 17:18:26
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86 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-05-16 15:30:41
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87 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-02-05 18:19:58
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88 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-10-18 16:19:37
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89 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-03-31 18:16:16
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90 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-06-06 16:29:54
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