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USGS 1:24K Quadrangle
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Featured collections Specimens Rocks Igneous rocks Pumice and obsidian
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31 resources
31 resources
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Pumice and obsidian

Photographs of felsic extrusive igneous rocks in the IGWS education collection

TIF
ED2682 Obsidian
ED2682 Obsidian  
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ED0688 Dacite
ED0688 Dacite  
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ED0670 Pumice
ED0670 Pumice  
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ED0773 Pyroclastic flow
ED0773 Pyroclastic flow  
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ED0771 Pumice
ED0771 Pumice  
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ED0781 Pumice
ED0781 Pumice  
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ED0746 Tuff
ED0746 Tuff  
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ED0924 Snowflake obsidian
ED0924 Snowflake obsidian  
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ED0918 Pumice
ED0918 Pumice  
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ED0993 Obsidian
ED0993 Obsidian  
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ED1009 Tuff
ED1009 Tuff  
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ED0999 Pumice
ED0999 Pumice  
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ED1105 Pumice
ED1105 Pumice  
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ED1104 Pumice
ED1104 Pumice  
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ED1131 Obsidian
ED1131 Obsidian  
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ED1128 Obsidian with pumice
ED1128 Obsidian with pumice  
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ED1314 Obsidian
ED1314 Obsidian  
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ED1884 Obsidian with pumice
ED1884 Obsidian with pumice  
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ED1549 Obsidian
ED1549 Obsidian  
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ED2008 Pumice
ED2008 Pumice  
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ED2074 Pumice
ED2074 Pumice  
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ED2636 Pumice
ED2636 Pumice  
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ED2509 Pumice
ED2509 Pumice  
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ED2462 Pumice
ED2462 Pumice  
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ED2762 Volcanic concretion
ED2762 Volcanic concretion  
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ED2450 Obsidian
ED2450 Obsidian  
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ED2869 Tephra
ED2869 Tephra  
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ED2405 Snowflake obsidian
ED2405 Snowflake obsidian  
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ED2395 Obsidian
ED2395 Obsidian  
TIF
Extrusive felsic igneous rock drawer
Extrusive felsic igneous...  
TIF
ED2631 Obsidian
ED2631 Obsidian