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

Sandstone (Arenite (predominantly SiO2)) — sedimentary

Sandstone

Arenite (predominantly SiO2)

Sandstone (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone

Arenite (composed primarily of SiO2)

Almandine Garnet (Almandine, Fe3Al2(SiO4)3) — mineral

Almandine Garnet

Almandine, Fe3Al2(SiO4)3

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Sandstone (Quartzite Pebble) (Arenite (SiO2)) — sedimentary

Sandstone (Quartzite Pebble)

Arenite (SiO2)

Orthoclase Feldspar (Potassium Aluminum Silicate (KAlSi3O8)) — mineral

Orthoclase Feldspar

Potassium Aluminum Silicate (KAlSi3O8)

Pegmatite (Granitic Pegmatite) — igneous

Pegmatite

Granitic Pegmatite

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Banded Gneiss (with possible weathered sulfide or iron staining) (Gneiss, potentially with iron oxide/hydroxide staining (e.g., limonite) or weathered sulfides) — Metamorphic

Banded Gneiss (with possible weathered sulfide or iron staining)

Gneiss, potentially with iron oxide/hydroxide staining (e.g., limonite) or weathered sulfides

Red Sandstone (Arenite (Ferruginous Sandstone)) — sedimentary

Red Sandstone

Arenite (Ferruginous Sandstone)

Basalt with Quartz Infill (Basalt (Mafic Extrusive Volcanic Rock)) — igneous

Basalt with Quartz Infill

Basalt (Mafic Extrusive Volcanic Rock)

Peridotite (Peridotite (Ultramafic Rock)) — igneous

Peridotite

Peridotite (Ultramafic Rock)

Basalt (Beach Pebble) (Extrusive Mafic Igneous Rock) — igneous

Basalt (Beach Pebble)

Extrusive Mafic Igneous Rock

Amethyst (Silicon Dioxide with iron impurities (SiO2)) — mineral

Amethyst

Silicon Dioxide with iron impurities (SiO2)

Yellow Chalcedony (Silicon Dioxide (SiO2)) — mineral

Yellow Chalcedony

Silicon Dioxide (SiO2)

Green Calcite (Onyx Marble) (Carbonate mineral (Calcium Carbonate, CaCO3)) — sedimentary

Green Calcite (Onyx Marble)

Carbonate mineral (Calcium Carbonate, CaCO3)

Basalt (Weathered) (Basalt) — igneous

Basalt (Weathered)

Basalt

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Vesicular Basalt (Vesicular Basalt) — igneous

Vesicular Basalt

Vesicular Basalt

Clear Quartz Point (Silicon Dioxide (SiO2)) — mineral

Clear Quartz Point

Silicon Dioxide (SiO2)

Peacock Ore (Bornite (Cu5FeS4) or Chalcopyrite treated with acid) — mineral

Peacock Ore

Bornite (Cu5FeS4) or Chalcopyrite treated with acid

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Biotite (Mica) (Biotite (K(Mg,Fe)3AlSi3O10(OH,F)2)) — mineral

Biotite (Mica)

Biotite (K(Mg,Fe)3AlSi3O10(OH,F)2)

Obsidian (Obsidian (Volcanic Glass)) — igneous

Obsidian

Obsidian (Volcanic Glass)

Scoria (Scoriaceous Basalt) — igneous

Scoria

Scoriaceous Basalt

Dendritic Agate (Silicon Dioxide (SiO2) with inclusions) — mineral

Dendritic Agate

Silicon Dioxide (SiO2) with inclusions

Dalmatian Jasper (Microgranular quartz with amphibole/tourmaline inclusions) — igneous

Dalmatian Jasper

Microgranular quartz with amphibole/tourmaline inclusions

Pumice (Pumice (Vesicular volcanic glass)) — igneous

Pumice

Pumice (Vesicular volcanic glass)

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

Scoria (Lava Rock)

Scoria (Mafic volcanic rock)

Black Tourmaline (Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)) — Mineral

Black Tourmaline

Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)

Sandstone (Clastic sedimentary rock (Quartz arenite)) — sedimentary

Sandstone

Clastic sedimentary rock (Quartz arenite)

Gneiss (Gneiss (Metamorphic rock of variable composition, typically SiO2 rich)) — metamorphic

Gneiss

Gneiss (Metamorphic rock of variable composition, typically SiO2 rich)

Sandstone (Ferruginous) (Sandstone (primarily SiO2 with Fe2O3 cement)) — sedimentary

Sandstone (Ferruginous)

Sandstone (primarily SiO2 with Fe2O3 cement)

Sandstone (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone

Arenite (composed primarily of SiO2)

Rutilated Quartz (Quartz (SiO2) with Rutile (TiO2) inclusions) — Mineral

Rutilated Quartz

Quartz (SiO2) with Rutile (TiO2) inclusions

Lepidolite (Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)) — mineral

Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Milky Quartz with Iron Staining (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz with Iron Staining

Quartz (Silicon Dioxide, SiO2)

Quartz (various varieties) (SiO₂ (Silicon Dioxide)) — Mineral

Quartz (various varieties)

SiO₂ (Silicon Dioxide)

Sandstone (Ferruginous) (Arenite with Iron Oxide matrix) — sedimentary

Sandstone (Ferruginous)

Arenite with Iron Oxide matrix

Granite (Weathered/Oxidized) (Phaneritic Felsic Igneous Rock (composed of Quartz, Orthoclase Feldspar, and Mica)) — igneous

Granite (Weathered/Oxidized)

Phaneritic Felsic Igneous Rock (composed of Quartz, Orthoclase Feldspar, and Mica)

Orbicular Granite (Orbicular Granidiorite / Plutonic Igneous Rock) — igneous

Orbicular Granite

Orbicular Granidiorite / Plutonic Igneous Rock