Basalt (Black Beach Pebble)
Basalt
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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Basalt River Stone
Basalt
igneous
Basalt
Basalt
igneous
Basalt
Basalt (composition: Plagioclase, Pyroxene, and Olivine)
igneous
Scoria (Lava Rock)
Scoria
igneous
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Sandstone (Micaceous Sandstone)
Arenite (SiO2 with KAl2(AlSi3O10)(OH)2 inclusions)
sedimentary
Greenstone / Greenschist
Greenschist facies metamorphic rock
metamorphic
Granite
Granite (Felsic Plutonic Rock)
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Porphyritic Rhyolite (Cookie Stone)
Porphyritic Rhyolite (SiO2, with phenocrysts)
igneous
Basalt (Water-worn Pebble)
Mafic Volcanic Rock (High in Fe and Mg)
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Granite
Granite (Silicic Plutonic Rock)
igneous
Basalt Pebble
Basalt (Extrusive Mafic Rock)
igneous
Basalt
Basalt (Mafic volcanic rock)
igneous
Basalt
Basalt (Mafic volcanic rock)
igneous
Basalt
Basalt (Volcanic Mafic Rock)
igneous
Basalt
Basalt
igneous
Porphyritic Basalt
Porphyritic Mafic Volcanic Rock
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz Cluster
Quartz (Silicon Dioxide, SiO2)
mineral
Banded Rock (likely Quartz-rich)
Uncertain, likely a Metamorphic Rock (e.g., Gneiss or Schist) with prominent Quartz and other minerals
Mineral
Diabase (Dolerite) Cobble
Diabase / Dolerite
igneous
Gneiss
Gneissic Metamorphic Rock
metamorphic
Gneiss
Gneissic Metamorphic Rock
metamorphic
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Garnet (Almandine/Pyrope series)
Garnet Group - X3Y2(SiO4)3
mineral
Clear Quartz Crystal
Quartz (Silicon Dioxide, SiO2)
mineral
Basalt (Vesicular/Scoria)
Vesicular Basalt
igneous
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Labradorite (White/Grey Labradorite)
Labradorite: (Ca, Na)(Al, Si)4O8
mineral
Carnelian
Carnelian (Silicon Dioxide, SiO2)
mineral
Quartz
Silicon dioxide (SiO2)
mineral
Moonstone (Feldspar)
Orthoclase feldspar, (K,Na)AlSi3O8
mineral
Rough Ruby
Corundum (Al2O3 with Chromium impurities)
mineral
Labradorite
Labradorite ((Ca, Na)(Al, Si)4O8)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Muscovite Mica
Muscovite / KAl2(AlSi3O10)(OH)2
mineral
Quartz-veined Gneiss
Gneiss with Quartz (SiO2) intrusions
metamorphic
Smoky Quartz
Silicon Dioxide (SiO2)
mineral