51 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-02-08 16:26:55
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52 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-05-29 13:30:55
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53 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-03-26 09:32:41
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54 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2010-01-27 09:11:24
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55 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2008-03-13 11:13:54
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56 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-01-24 13:04:52
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57 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2007-02-05 08:57:22
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58 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2008-02-01 09:03:51
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59 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-12-11 09:49:20
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60 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2007-01-19 08:21:51
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