31 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-11-06 18:18:24
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32 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-06-06 10:58:07
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33 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-01-24 14:55:36
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34 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-03-18 09:50:37
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35 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-07-24 15:37:25
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36 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-09-20 11:56:31
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37 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-12-23 14:36:40
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38 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-05-09 17:32:21
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39 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-09-20 12:28:02
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40 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-01-24 18:33:39
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