1 | Add to Reading ListSource URL: minerals.er.usgs.govLanguage: English - Date: 1996-11-05 15:00:05
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2 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2001-02-01 13:43:21
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3 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 2005-06-17 07:38:25
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4 | Add to Reading ListSource URL: minerals.usgs.govLanguage: English - Date: 1996-11-05 15:00:05
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