Rock Identifier

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

Calc-Silicate Rock

Calc-Silicate Rock

Carbonatite

Pegmatite

Argillite

Pyroxenite

Dalmatian Jasper

Dalmatian Jasper

Skarn

Serpentinite

Granulite

Cordierite Hornfels

Cordierite Hornfels

Lamprophyre

Bauxite

Pumice (Pumice (a highly vesicular volcanic glass)) — igneous

Pumice

Pumice (a highly vesicular volcanic glass)

Epidote and Quartz in Basalt Porpohyry (Epidote bearing Porphyritic Basalt with Quartz Veins) — igneous

Epidote and Quartz in Basalt Porpohyry

Epidote bearing Porphyritic Basalt with Quartz Veins

Basalt (Extrusive Igneous Rock (Mafic)) — igneous

Basalt

Extrusive Igneous Rock (Mafic)

Sandstone (Ferruginous) (Sandstone (primarily SiO2 with iron oxide Fe2O3 staining)) — sedimentary

Sandstone (Ferruginous)

Sandstone (primarily SiO2 with iron oxide Fe2O3 staining)

Gneiss (Metamorphic Rock (Gneissic texture)) — metamorphic

Gneiss

Metamorphic Rock (Gneissic texture)

Peridot (Olivine ((Mg, Fe)2SiO4)) — gemstone

Peridot

Olivine ((Mg, Fe)2SiO4)

Vesicular Basalt (Basalt) — igneous

Vesicular Basalt

Basalt

Diorite (Phaneritic Intermediate Plutonic Rock) — Igneous

Diorite

Phaneritic Intermediate Plutonic Rock

Granite (Granite (Phaneritic intrusive igneous rock) - Composition: SiO2, Al2O3, K2O, Na2O) — igneous

Granite

Granite (Phaneritic intrusive igneous rock) - Composition: SiO2, Al2O3, K2O, Na2O

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz with Iron Oxide (SiO2) — mineral

Quartz with Iron Oxide

SiO2

Fancy Jasper (Agate (Silicon Dioxide, SiO2)) — sedimentary

Fancy Jasper

Agate (Silicon Dioxide, SiO2)

Sandstone (Quartzose Sandstone) (Clastic Sedimentary Rock (composed mostly of SiO2)) — sedimentary

Sandstone (Quartzose Sandstone)

Clastic Sedimentary Rock (composed mostly of SiO2)

Basalt with Quartz Vein (Basalt with silicon dioxide (SiO2) inclusion) — igneous

Basalt with Quartz Vein

Basalt with silicon dioxide (SiO2) inclusion

Garnet (Garnet Group (Silicate mineral); general formula X3Y2(SiO4)3) — mineral

Garnet

Garnet Group (Silicate mineral); general formula X3Y2(SiO4)3

Quartz (Grain) (Silicon Dioxide (SiO2)) — mineral

Quartz (Grain)

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Dumortierite Quartz (Al7BO3(SiO4)3O3 (Borosilicate mineral/Quartz inclusion)) — mineral

Dumortierite Quartz

Al7BO3(SiO4)3O3 (Borosilicate mineral/Quartz inclusion)

Muscovite Schist (Muscovite Schist (KAl2(AlSi3O10)(OH)2 matrix)) — metamorphic

Muscovite Schist

Muscovite Schist (KAl2(AlSi3O10)(OH)2 matrix)

Sandstone pebble (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone pebble

Clastic sedimentary rock (primarily SiO2)

Granite (Phaneritic Plutonic Igneous Rock (primarily composed of quartz, alkali feldspar, and plagioclase)) — igneous

Granite

Phaneritic Plutonic Igneous Rock (primarily composed of quartz, alkali feldspar, and plagioclase)

Quartz (Iron-stained) (Silicon Dioxide (SiO2)) — mineral

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Gneiss Pebble (Gneiss) — metamorphic

Gneiss Pebble

Gneiss

Mixed River Pebbles (including Unakite and Jasper) (Polymineralic geological specimens) — igneous and sedimentary

Mixed River Pebbles (including Unakite and Jasper)

Polymineralic geological specimens

igneous and sedimentary

Garnet Rhyolite (Rhyolite (high-silica volcanic rock) with almandine/spessartine garnet) — igneous

Garnet Rhyolite

Rhyolite (high-silica volcanic rock) with almandine/spessartine garnet

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Dalmatian Stone (Dalmatian Jasper (Aphanitic Igneous Rock with Arfvedsonite inclusions)) — igneous

Dalmatian Stone

Dalmatian Jasper (Aphanitic Igneous Rock with Arfvedsonite inclusions)

Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock

Quartz Geode (Unbroken) (Silicon Dioxide (SiO2)) — sedimentary

Quartz Geode (Unbroken)

Silicon Dioxide (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Chert Geode or Nodule (Microcrystalline Quartz (SiO2)) — sedimentary

Chert Geode or Nodule

Microcrystalline Quartz (SiO2)

Sandstone or Limestone (Arenite or Calcareous Sedimentary Rock) — Sedimentary

Sandstone or Limestone

Arenite or Calcareous Sedimentary Rock

River Cobble (Weathered Granitoid) (Granodiorite / Quartz Diorite) — igneous

River Cobble (Weathered Granitoid)

Granodiorite / Quartz Diorite

Obsidian (Obsidian (Volcanic Glass)) — igneous

Obsidian

Obsidian (Volcanic Glass)

Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock

Basalt (Basalt (Mafic Volcanic Rock)) — igneous

Basalt

Basalt (Mafic Volcanic Rock)

Pegmatite or Graphic Granite (Intrusive Igneous Rock) — igneous

Pegmatite or Graphic Granite

Intrusive Igneous Rock

Basalt (Basalt (Aphanitic Mafic Igneous Rock)) — igneous

Basalt

Basalt (Aphanitic Mafic Igneous Rock)

Dalmatian Jasper (Microcrystalline Quartz with Arfvedsonite/Tourmaline inclusions) — igneous

Dalmatian Jasper

Microcrystalline Quartz with Arfvedsonite/Tourmaline inclusions

Scoria (Lava Rock) (Scoria (Mafic volcanic rock)) — igneous

Scoria (Lava Rock)

Scoria (Mafic volcanic rock)

Granite (Phaneritic Felsic Igneous Rock) — igneous

Granite

Phaneritic Felsic Igneous Rock