21 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-01-29 11:35:45
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22 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2009-01-30 10:09:06
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23 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-01-24 13:54:58
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24 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-03-07 15:48:15
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25 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2004-01-13 10:50:50
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26 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1996-09-04 14:55:32
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27 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2006-09-18 14:36:04
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28 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2007-08-31 11:04:02
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29 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2002-04-25 11:03:44
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30 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2007-01-19 08:20:51
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