81 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2000-03-06 11:56:53
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82 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2000-02-01 12:14:55
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83 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1997-01-14 10:43:34
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84 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2000-11-07 09:29:40
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85 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-09-27 14:59:33
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86 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-01-19 13:33:17
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87 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2007-10-01 11:15:23
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88 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2010-01-27 09:06:51
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89 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-01-29 11:32:41
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90 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-01-24 13:51:17
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