81 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2002-08-28 12:34:00
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82 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2006-08-15 09:15:05
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83 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2007-08-31 11:16:09
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84 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-01-24 15:24:31
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85 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-11-01 10:51:18
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86 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-06-21 10:58:33
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87 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-10-05 11:12:33
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88 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2010-10-12 10:06:38
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89 | Add to Reading ListSource URL: www.ok.govLanguage: English - Date: 2013-06-14 17:17:03
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90 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2009-02-02 09:22:30
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