21 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-04-15 16:35:30
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22 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2000-03-06 14:12:03
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23 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2008-02-01 10:53:25
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24 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-03-13 17:50:40
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25 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-03-13 17:35:38
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26 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-11-15 17:33:55
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27 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-06-03 15:58:54
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28 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1997-03-12 08:47:51
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29 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2006-08-15 09:15:48
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30 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-06-02 09:50:30
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