71 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2000-10-31 07:16:54
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72 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2000-07-17 06:50:44
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73 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-09-23 12:08:11
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74 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-08-06 14:19:29
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75 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-08-01 08:49:36
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76 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-05-22 10:57:52
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77 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-05-29 11:19:47
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78 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-01-29 11:31:43
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79 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-01-24 12:09:40
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80 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2010-01-27 09:05:48
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