Porphyritic Basalt (Chinese Writing Stone)
Porphyritic Basaltic Andesite
igneous
Category
Igneous Rock
Browse igneous rock specimens identified by the Rock Identifier community.
Learn about Igneous Rock in the encyclopedia
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Green Porphyry (Flowerstone)
Porphyritic Andesite or Basalt
igneous
Greenstone
Metabasalt / Greenschist facies rock
Metamorphic
Milky Quartz
Quartz / Silicon Dioxide (SiO2)
mineral
Corundum (Sapphire in Host Rock)
Corundum (Aluminum Oxide, Al2O3)
mineral
Basalt with Quartz Veining
Basalt (Mafic Volcanic Rock with SiO2)
igneous
Scoria (Lava Rock)
Scoria
igneous
Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
mineral
Basalt
Basalt
igneous
Pumice
Pumice (Amorphous volcanic glass)
igneous
Basalt
Basalt (dominated by Plagioclase Feldspar and Pyroxene)
igneous
Basalt
Basalt
igneous
Basalt
Basalt (composition of Plagioclase feldspar and Pyroxene)
igneous
Basalt
Basalt
igneous
Basalt
Basalt
igneous
Basalt
Basalt (composition predominately plagioclase feldspar and pyroxene)
igneous
Basalt Pebble
Basalt
igneous
Basalt
Basalt
igneous
Gravel or Crushed Stone
Fragmented Aggregate Stone
sedimentary or igneous fragment
Diorite river pebble
Diorite (intermediate plutonic rock)
igneous
Basalt
Basalt (Mafic volcanic rock)
igneous
Porphyritic Basalt
Porphyritic Basalt (Silicate Rock)
igneous
Granite River Pebble
Granite (Felsic Plutonic Rock)
igneous
Basalt
Basalt (extrusive volcanic rock)
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Gabbro
Gabbro (mafic intrusive rock)
igneous
Granite (with mafic xenolith)
Phaneritic Felsic Plutonic Rock
Igneous
Granite
Phaneritic plutonic felsic rock
igneous
Rhyolite
Rhyolite (felsic volcanic rock)
igneous
Scoria
Extrusive Mafic Volcanic Rock
igneous
Gabbro
Gabbro (mafic intrusive rock)
igneous
Basalt
Basalt (Mafic volcanic rock)
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Granite
Felsic Plutonic Rock (Granite)
igneous
Diorite
Phaneritic Intermediate Plutonic Rock
igneous
Granite
Phaneritic Plutonic Rock (Granite)
igneous
Basalt
Basalt (Mafic volcanic rock)
igneous
Basalt
Basalt (Mafic volcanic rock)
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Vesicular Basalt or Scoria
Basalt (extrusive volcanic rock)
igneous