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

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Banded Gneiss (Gneiss (Metamorphic high-grade rock)) — metamorphic

Banded Gneiss

Gneiss (Metamorphic high-grade rock)

Sandstone (Quartzose) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Quartzose)

Arenite (primarily SiO2)

Granite Pebble (Pink Feldspar-rich) (Granite) — igneous

Granite Pebble (Pink Feldspar-rich)

Granite

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

Quartz (Grain)

Silicon Dioxide (SiO2)

Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Pebble (likely a type of sandstone or quartzite pebble) (Clastic Sediment (specifically, a rudite-sized clast). If the pebble is composed of a specific rock type, its scientific name would be that rock type (e.g., 'Quartzite pebble', 'Granite pebble', 'Chert pebble'). Given its appearance, it is likely a metamorphic quartzite pebble or a hard sandstone pebble.) — Sedimentary rock

Pebble (likely a type of sandstone or quartzite pebble)

Clastic Sediment (specifically, a rudite-sized clast). If the pebble is composed of a specific rock type, its scientific name would be that rock type (e.g., 'Quartzite pebble', 'Granite pebble', 'Chert pebble'). Given its appearance, it is likely a metamorphic quartzite pebble or a hard sandstone pebble.

Sedimentary rock

Granite (Granite (Phaneritic Quartz-Feldspar Rock)) — Igneous

Granite

Granite (Phaneritic Quartz-Feldspar Rock)

Basalt with Vesicles (Vesicular Basalt (comprising Plagioclase Feldspar, Pyroxene, and Olivine)) — igneous

Basalt with Vesicles

Vesicular Basalt (comprising Plagioclase Feldspar, Pyroxene, and Olivine)

Basalt with Plagioclase Phenocrysts (Basalt) — igneous

Basalt with Plagioclase Phenocrysts

Basalt

Banded Gneiss (Gneiss) — metamorphic

Banded Gneiss

Gneiss

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Epidote (Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))) — mineral

Epidote

Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))

Peridotite (Peridotite (composed largely of Olivine (Mg,Fe)2SiO4)) — igneous

Peridotite

Peridotite (composed largely of Olivine (Mg,Fe)2SiO4)

Chert (Chalcedony/Agate) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Chalcedony/Agate)

Microcrystalline Quartz (SiO2)

Red Granite (Phaneritic Plutonic Rock (High Potassium Feldspar)) — igneous

Red Granite

Phaneritic Plutonic Rock (High Potassium Feldspar)

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Pebble with Basaltic and Quartz-rich Banding (Polymictic Lithic Pebble) — sedimentary

Pebble with Basaltic and Quartz-rich Banding

Polymictic Lithic Pebble

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

Aventurine (Green Quartz) (Silicon dioxide with inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)) — mineral

Aventurine (Green Quartz)

Silicon dioxide with inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Pumice (Pumice (volcanic glass)) — igneous

Pumice

Pumice (volcanic glass)

Gray Basalt (Basalt (Mafic Extrusive Igneous Rock)) — igneous

Gray Basalt

Basalt (Mafic Extrusive Igneous Rock)

Golden Calcite (Calcium Carbonate (CaCO3)) — mineral

Golden Calcite

Calcium Carbonate (CaCO3)

Plum Blossom Tourmaline (Tourmaline with Lepidolite (Na,Ca)(Li,Mg,Al)3Al6(BO3)3Si6O18(OH)4) — igneous

Plum Blossom Tourmaline

Tourmaline with Lepidolite (Na,Ca)(Li,Mg,Al)3Al6(BO3)3Si6O18(OH)4

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

Pumice

Pumice (a highly vesicular volcanic glass)

Granite Pebble (Granite (plutonic felsic rock)) — igneous

Granite Pebble

Granite (plutonic felsic rock)

Potassium Feldspar (K-Feldspar (Orthoclase/Microcline), KAlSi3O8) — mineral

Potassium Feldspar

K-Feldspar (Orthoclase/Microcline), KAlSi3O8

Basalt (Basalt) — igneous

Basalt

Basalt

Quartz (or Chert/Flint) (Silicon Dioxide (SiO2)) — mineral

Quartz (or Chert/Flint)

Silicon Dioxide (SiO2)

Granite (Granite) — Igneous

Granite

Granite

Pumice (Highly vesicular volcanic glass (unnamed scientific variant: Rhyolitic/Andesitic Pumice)) — igneous

Pumice

Highly vesicular volcanic glass (unnamed scientific variant: Rhyolitic/Andesitic Pumice)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Sandstone with Iron Banding (Arenite with Hematite or Limonite staining (SiO2 with Fe2O3)) — sedimentary

Sandstone with Iron Banding

Arenite with Hematite or Limonite staining (SiO2 with Fe2O3)

Gossan (Iron Hat) (Limonitic Gossan (predominantly FeO(OH)·nH2O)) — igneous/metamorphic derivative

Gossan (Iron Hat)

Limonitic Gossan (predominantly FeO(OH)·nH2O)

igneous/metamorphic derivative

Granite (Granite (composed primarily of Quartz, Feldspar, and Mica)) — igneous

Granite

Granite (composed primarily of Quartz, Feldspar, and Mica)

Gneiss (Gneiss (high-grade metamorphic rock typically composed of quartz, feldspar, and mica)) — metamorphic

Gneiss

Gneiss (high-grade metamorphic rock typically composed of quartz, feldspar, and mica)

Scoria (Vesicular Basalt / Scoria) — igneous

Scoria

Vesicular Basalt / Scoria

Sandstone (Arenite (predominantly SiO2)) — sedimentary

Sandstone

Arenite (predominantly SiO2)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Jasper and Epidote Breccia (Silicified Brecciated Rock with Epidote) — metamorphic

Jasper and Epidote Breccia

Silicified Brecciated Rock with Epidote

Granite (Felsic intrusive igneous rock) — igneous

Granite

Felsic intrusive igneous rock