Granite Pebble (River Rock)
Phaneritic Felsic Igneous Rock
Category
Browse mineral on igneous rock specimens identified by the Rock Identifier community.
Granite Pebble (River Rock)
Phaneritic Felsic Igneous Rock
Basalt
Extrusive mafic igneous rock
Granite
Phaneritic Felsic Igneous Rock
Scoria (Red Lava Rock)
Scoria (Extrusive Igneous Rock)
Basalt (River Stone)
Aphanitic Mafic Igneous Rock
Granite
Granite (Phaneritic Igneous Rock)
Basalt River Pebble
Mafic Igneous Rock (Fine-grained Basalt)
Basalt Pebble
Basalt (Aphanitic Mafic Igneous Rock)
Basalt (River Pebble)
Basalt (Aphanitic Mafic Igneous Rock)
Basalt (Porphyritic)
Basalt (Mafic Extrusive Igneous Rock)
Basalt
Basalt (Aphanitic Mafic Igneous Rock)
Basalt
Basalt (Aphanitic Mafic Igneous Rock)
Basalt (River Stone)
Basalt (Aphanitic Mafic Igneous Rock)
Granite (Granitic Pegmatite/Porphyry)
Felsic intrusive igneous rock (Quartz, Feldspar, Mica composition)
Granite
Granite (Felsic Plutonic Rock)
Granite (Pink/Red Orthoclase variety)
Phaneritic Plutonic Felsic Rock (SiO2, KAlSi3O8, NaAlSi3O8, CaAl2Si2O8)
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Greenschist (Chlorite Schist)
Greenschist (Metamorphic rock dominated by chlorite, actinolite, and epidote)
Quartz (likely milky/rose quartz variety)
Quartz (SiO2 - Silicon Dioxide)
Nuummite
Nuummite (Orthoamphibole rock / Anthophyllite-Gedrite blend)
Granite
Granite (a common name for a felsic intrusive igneous rock)
Greenschist with Quartz Veining
Greenschist (commonly containing Chlorite, Actinolite, and Epidote)
Veined Quartz
SiO2 (Silicon Dioxide)
Dalmatian Stone
Dalmatian Jasper (actually a Peralkaline Igneous Rock)
Granite Cobble
Granite (Phaneritic Quartz-Feldspar Felsic Rock)
Greenschist (Chlorite Schist)
Greenschist (containing chlorite, actinolite, and epidote)
Clear Quartz (Rock Crystal)
Quartz (Silicon Dioxide, SiO2)
Meteorite (Chondrite)
Stony Meteorite (Ordinary Chondrite)
Amethyst
Amethyst (Silicon Dioxide, SiO2 + Fe)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Snowflake Obsidian
Volcanic Glass with Cristobalite inclusions
Snowflake Obsidian
Vitreous Volcanic Rock (Amorphous Silicate), SiO2
Milky Quartz
Silicon Dioxide (SiO2)
Granitic Gneiss
Gneiss (Polymetamorphic Granitic Gneiss)
Gneiss (Metamorphic Rock)
Gneiss
Quartz
Silicon Dioxide (SiO₂)
Granite Cobble
Granite (Phaneritic Quartz-Feldspar Felsic Rock)
Granite Gneiss
Gneiss (derived from granitic protolith)
Greenschist (containing Epidote and Quartz)
Greenschist (Epidote-Chlorite-Actinolite Schist)
Obsidian
Obsidian (Volcanic Glass), primarily SiO2 (Silicon Dioxide)
Banded Gneiss
Gneiss (quartz-feldspar-biotite metamorphic rock)
Snowflake Obsidian
Volcanic glass (SiO2) with Cristobalite (SiO2) inclusions