541 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-06-21 10:58:33
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542 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-10-05 11:12:33
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543 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2000-03-06 13:56:38
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544 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2010-10-12 10:06:38
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545 | Add to Reading ListSource URL: www.mica.eduLanguage: English - Date: 2014-08-11 16:23:22
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546 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2009-02-02 09:22:30
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547 | Add to Reading ListSource URL: www.blm.govLanguage: English - Date: 2014-09-01 12:21:12
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548 | Add to Reading ListSource URL: www.epa.govLanguage: English - Date: 2010-01-21 16:22:17
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549 | Add to Reading ListSource URL: www.blm.govLanguage: English - Date: 2014-08-31 11:32:13
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550 | Add to Reading ListSource URL: www2.epa.govLanguage: English - Date: 2013-11-08 09:54:44
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