541 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-05-23 12:51:34
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542 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-01-24 11:07:11
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543 | Add to Reading ListSource URL: www.handbookofmineralogy.comLanguage: English - Date: 2007-09-30 01:56:44
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544 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2000-10-12 07:53:35
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545 | Add to Reading ListSource URL: www.handbookofmineralogy.comLanguage: English - Date: 2007-09-30 01:18:34
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546 | Add to Reading ListSource URL: www.handbookofmineralogy.comLanguage: English - Date: 2007-09-30 02:54:46
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547 | Add to Reading ListSource URL: www.handbookofmineralogy.comLanguage: English - Date: 2007-09-30 03:00:10
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548 | Add to Reading ListSource URL: www.handbookofmineralogy.comLanguage: English - Date: 2007-09-30 01:34:48
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549 | Add to Reading ListSource URL: www.gfms.co.ukLanguage: English - Date: 2012-04-20 10:09:02
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550 | Add to Reading ListSource URL: www.geology.utoronto.caLanguage: English - Date: 2010-03-01 11:35:49
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