Granite Glacial Erratic
Intrusive Phaneritic Felsic Rock (Granite)
igneous
Category
Mineral In Igneous Rock
Browse mineral in igneous rock specimens identified by the Rock Identifier community.
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Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
mineral
Granite
Felsic intrusive igneous rock
igneous
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Gneiss (Banded Gneiss Cobble)
Gneiss
metamorphic
Granite
Felsic intrusive igneous rock
igneous
Granite (Polished Slab)
Granite (Plutonic Igneous Rock)
igneous
Diorite
Diorite (plutonic igneous rock)
igneous
Granite
Phaneritic Felsic Igneous Rock (Main minerals: SiO2, KAlSi3O8, NaAlSi3O8)
igneous
Basalt
Extrusive mafic igneous rock
igneous
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Porphyritic Basalt (with Pyrolusite or Iron-oxide staining)
Porphyritic Basalt (Mafic Extrusive)
igneous
Granite
Phaneritic Igneous Rock (Granite)
igneous
Granite Pebble
Granite (Phaneritic Igneous Rock)
igneous
Gabbro (likely with Pyrite/Sulfide mineralization)
Mafic Intrusive Igneous Rock
igneous
Granite / Quartzite Specimen
Granite / Quartz (SiO2 with Feldspar and Mica)
igneous
Blue Apatite
Ca5(PO4)3(F,Cl,OH)
mineral
Magnetite / Hematite mix (Iron Ore)
Fe3O4 (Magnetite) / Fe2O3 (Hematite)
mineral
Gneiss
Gneissic Metamorphic Rock (Mineral composition: Quartz, Feldspar, Amphibole/Biotite)
metamorphic
Dyed Agate
Agate (Silicon dioxide)
Mineral
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Quartz Geode
Silicon Dioxide (SiO2) - Crystalline Quartz
mineral
Quartz Pebbles
Silicon Dioxide (SiO2)
mineral
Basalt
Extrusive igneous rock
igneous
Basalt
Extrusive Igneous Rock
igneous
Basalt
Extrusive Igneous Rock
igneous
Basalt
Extrusive Igneous Rock
igneous
Basalt
Extrusive Igneous Rock
igneous
Quartz
Silicon Dioxide (SiO2)
mineral
Granite
Granite (Felsic Plutonic Rock)
igneous
Granite cobble
Granite (Felsic Plutonic Rock)
igneous
Pyrite
Iron Disulfide (FeS2)
mineral
Beach Pebble (Basalt/Porphyry)
Weathered Basalt or Porphyry
igneous
Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Weathered granite or granitic gneiss pebble
Granite, primarily quartz, feldspar, and mica; exact identification is uncertain from the image
igneous
Gabbro (River Cobble)
Gabbro (mafic intrusive rock)
igneous
Schist
Metamorphic Rock (Schist)
metamorphic
Granite Pegmatite
Phaneritic Plutonic Igneous Rock
igneous
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Granite
Felsic intrusive igneous rock
igneous