21 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-04-11 13:47:10
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22 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2006-08-15 09:02:15
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23 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-01-29 11:30:43
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24 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2000-10-31 07:00:29
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25 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2002-06-24 07:43:43
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26 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2004-09-14 11:17:31
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27 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2000-07-20 07:21:36
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28 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2002-04-23 13:24:48
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29 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1996-08-13 14:08:53
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30 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2014-03-07 15:39:58
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