Granite
Phaneritic plutonic rock (Quartz, Feldspar, Mica)
igneous
Category
Mineral Like Byproduct (Often Mistaken For Igneous Rock Or Meteorite)
Browse mineral like byproduct (often mistaken for igneous rock or meteorite) specimens identified by the Rock Identifier community.
Learn about Mineral Like Byproduct (Often Mistaken For Igneous Rock Or Meteorite) in the encyclopedia
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Yellow Jasper
Silicon Dioxide (SiO2)
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Iron Oxide inclusions
sedimentary
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Siltstone or Mudstone
Siltstone (composed primarily of silt-sized particles)
sedimentary
Siltstone
Siltstone (primarily SiO2 with Al2O3)
sedimentary
Blue Quartz
Silicon Dioxide (SiO2) with inclusions
mineral
Granite
Granite (composed primarily of Quartz, Feldspar, and Mica)
igneous
Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Magnetite
Magnetite (Fe3O4)
mineral
Magnetite / Iron Ore
Magnetite (Fe3O4)
mineral
Greenstone
Metabasalt / Chlorite-Epidote Schist
metamorphic
Gneiss (Schistose)
Gneiss
metamorphic
Biotite Mica
K(Mg,Fe)3AlSi3O10(OH)2
Mineral in a matrix (likely quartz or feldspar)
Basalt
Basalt
igneous
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Gneiss
Foliated Metamorphic Gneiss
metamorphic
Quartz-rich Diorite
Diorite (Phaneritic intermediate igneous rock)
igneous
Carbonaceous Chondrite (CV3 type)
Carbonaceous Chondrite (CV3 group)
meteorite
Quartz (likely Milky Quartz or Chalcedony)
Quartz (SiO2 - Silicon Dioxide)
Mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Magnetite Sand (Black Sand)
Magnetite (Fe3O4)
mineral
Dumortierite Quartz
Dumortierite (Al7BO3(SiO4)3O3 / inclusion in SiO2)
metamorphic
Olivine-bearing Basalt / Scoria
Mafic Igneous Rock (primarily (Mg, Fe)2SiO4)
igneous
Rhyolite
Rhyolite (felsic extrusive igneous rock)
igneous
Vesicular Basalt
Basalt (Mafic volcanic rock)
igneous
Diorite
Diorite (Intermediate intrusive igneous rock)
igneous
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Granite (Weathered)
Plutonic Igneous Rock (Granitic)
igneous
Quartz Vein in Basalt or Porphyry
Silicate-veined volcanic rock
igneous
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Magnetite
Magnetite (Fe3O4)
mineral
Conglomerate
Conglomerate (a clastic sedimentary rock)
Sedimentary Rock
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Iron-stained Milky Quartz
Silicon Dioxide (SiO2) with iron oxide inclusions
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Obsidian
Volcanic Glass (Amorphous silicon dioxide with impurities)
igneous
Quartz (River Pebble)
Silicon Dioxide (SiO2)
mineral
Gneiss
Metamorphic Gneiss
metamorphic
Granitic Pegmatite
Granite Pegmatite (principally KAlSi3O8, SiO2, and KAl2(AlSi3O10)(OH)2)
igneous
Diorite
Intermediate plutonic igneous rock
igneous
Amygdaloidal Basalt
Amygdaloidal Basalt with Secondary Mineral Amygdules
igneous