51 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2008-01-31 14:27:01
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52 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2004-03-24 09:51:30
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53 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2012-12-04 11:59:17
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54 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2007-01-16 12:14:00
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55 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2013-04-19 13:50:45
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56 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2007-12-17 10:53:41
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57 |
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