Green Porphyry (Flowerstone)
Porphyritic Andesite or Basalt
igneous
Category
Igneous Rock (Volcanic Glass)
Browse igneous rock (volcanic glass) specimens identified by the Rock Identifier community.
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Vesicular Basalt (River Cobble)
Basalt (Mafic Extrusive Igneous Rock)
igneous
River Stone (likely Basalt or fine-grained Andesite)
Extrusive Igneous Rock (Mafic to Intermediate)
igneous
Basalt River Stone
Basalt (Aphanitic Mafic Igneous Rock)
igneous
Pumice (or Volcanic Scoria)
Vesicular Rhyolite or Vesicular Basalt
igneous
Slag (Industrial Byproduct)
Artificial silicate/iron byproduct
Mineral description (Anthropogenic material)
Pumice
Pumice (Volcanic Glass)
igneous
Black Obsidian
Volcanic Glass (SiO2)
igneous
Black Obsidian
Volcanic Glass (SiO2)
igneous
Obsidian
Obsidian (Volcanic Glass)
igneous
Black Obsidian
Obsidian (Volcanic Glass)
igneous
Obsidian
Volcanic Glass (SiO2)
igneous
Black Obsidian
Volcanic Glass (SiO2)
igneous
Obsidian
Obsidian (Volcanic Glass)
igneous
Obsidian
Volcanic Glass (SiO2)
igneous
Obsidian
Obsidian (Volcanic Glass)
igneous
Obsidian
Volcanic Glass (SiO2)
igneous
Obsidian
Obsidian (Volcanic Glass)
igneous
Obsidian
Obsidian (Volcanic Glass)
igneous
Obsidian
Volcanic Glass (SiO2)
igneous
Obsidian
Obsidian (Volcanic Glass)
igneous
Obsidian
Obsidian (Volcanic Glass)
igneous
Obsidian
Obsidian (Volcanic Glass)
igneous
Obsidian
Obsidian (Volcanic Glass)
igneous
Obsidian
Volcanic Glass (SiO2)
igneous
Obsidian
Volcanic Glass (SiO2)
igneous
Obsidian
Obsidian (Volcanic Glass)
igneous
Obsidian
Obsidian (Volcanic Glass)
igneous
Obsidian
Obsidian (Volcanic Glass)
igneous
Obsidian
Volcanic Glass (SiO2)
igneous
Black Obsidian
Volcanic Glass (SiO2)
igneous
Obsidian with Matrix
Volcanic Glass (SiO2)
igneous
Obsidian
Obsidian (Volcanic Glass)
igneous
Obsidian
Obsidian (Volcanic Glass)
igneous
Obsidian
Volcanic Glass (SiO2)
igneous
Obsidian
Volcanic Glass (SiO2)
igneous
Obsidian
Obsidian (volcanic glass)
igneous
Basalt Pebble
Aphanitic Mafic Volcanic Rock (Basalt)
igneous
Basalt
Extrusive mafic igneous rock
igneous
Vesicular Basalt
Basalt (with vesicular texture)
igneous
Basalt
Extrusive Igneous Rock (Mafic)
igneous
Vesicular Basalt (Scoria)
Vesicular Basalt
igneous