11 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1999-05-13 12:27:56
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12 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2002-05-08 12:04:56
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13 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2004-09-14 10:56:47
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14 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2001-02-01 13:01:11
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15 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2011-01-24 11:55:08
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