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

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

Quartz (Druzy)

Silicon Dioxide (SiO2)

Black Obsidian (Obsidian (Volcanic Glass)) — igneous

Black Obsidian

Obsidian (Volcanic Glass)

Clear Quartz (Silicon dioxide (SiO2)) — mineral

Clear Quartz

Silicon dioxide (SiO2)

Blue Quartz (Quartz (SiO2) with inclusions) — Mineral

Blue Quartz

Quartz (SiO2) with inclusions

Amygdaloidal Basalt (Amygdaloidal Basalt (Mafic Volcanic Rock)) — igneous

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic Volcanic Rock)

Clear Quartz Crystal (Herkimer Diamond style) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz Crystal (Herkimer Diamond style)

Silicon Dioxide (SiO2)

Diamond (Diamond (pure carbon, C)) — mineral

Diamond

Diamond (pure carbon, C)

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Porphyritic Basalt or Andesite (Porphyritic Basalt/Andesite) — Igneous

Porphyritic Basalt or Andesite

Porphyritic Basalt/Andesite

Amethyst (Tumbled) (Amethyst (Silicon Dioxide, SiO2 + Fe4+)) — mineral

Amethyst (Tumbled)

Amethyst (Silicon Dioxide, SiO2 + Fe4+)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Sandstone (Banded) (Clastic Sedimentary Rock (primarily SiO2)) — sedimentary

Sandstone (Banded)

Clastic Sedimentary Rock (primarily SiO2)

Scoria (Extrusive Basaltic Scoria) — igneous

Scoria

Extrusive Basaltic Scoria

Basalt (Mafic Igneous Rock (composed primarily of Pyroxene and Plagioclase Feldspar)) — igneous

Basalt

Mafic Igneous Rock (composed primarily of Pyroxene and Plagioclase Feldspar)

Aventurine (Quartz (Aventurine variety)) — Mineral

Aventurine

Quartz (Aventurine variety)

Obsidian (Volcanic Glass (High silica amorphous rock)) — igneous

Obsidian

Volcanic Glass (High silica amorphous rock)

Dalmatian Jasper (Peralkaline Quartz-feldspathic Rock (Arfvedsonite-bearing)) — igneous

Dalmatian Jasper

Peralkaline Quartz-feldspathic Rock (Arfvedsonite-bearing)

Pumice (Pumice (Volcanic Glass)) — igneous

Pumice

Pumice (Volcanic Glass)

Quartzite Pebble (Iron-stained Quartz) (Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions) — metamorphic

Quartzite Pebble (Iron-stained Quartz)

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions

Granite (Plutonic felsic igneous rock) — igneous

Granite

Plutonic felsic igneous rock

River Stone (likely Basalt or Greywacke) (Basalt with mineral veining) — igneous

River Stone (likely Basalt or Greywacke)

Basalt with mineral veining

Basalt River Stone (Basalt (Mafic volcanic rock, primarily Plagioclase and Pyroxene)) — igneous

Basalt River Stone

Basalt (Mafic volcanic rock, primarily Plagioclase and Pyroxene)

Granite Cobble (Granite (Porphyritic/Coarse-grained)) — igneous

Granite Cobble

Granite (Porphyritic/Coarse-grained)

Chrysocolla (Chrysocolla (Cu2–xAlx(H2–xSi2O5)(OH)4·nH2O)) — mineral

Chrysocolla

Chrysocolla (Cu2–xAlx(H2–xSi2O5)(OH)4·nH2O)

Scoria (Scoria (Vesicular Basaltic Glass)) — Igneous

Scoria

Scoria (Vesicular Basaltic Glass)

Scoria (Lava Rock) (Scoria (Basaltic Scoria)) — Igneous

Scoria (Lava Rock)

Scoria (Basaltic Scoria)

Pyrite (Fool's Gold) (Iron Disulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Milky Quartz (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (Silicon dioxide (SiO2)) — Mineral

Quartz

Silicon dioxide (SiO2)

Diorite (Porphyritic) / Granite (Plutonic Igneous Rock (Granodiorite / Diorite)) — igneous

Diorite (Porphyritic) / Granite

Plutonic Igneous Rock (Granodiorite / Diorite)

Quartz Geode (with Agate banding) (Silicon Dioxide (SiO2)) — Sedimentary or Igneous (secondary formation)

Quartz Geode (with Agate banding)

Silicon Dioxide (SiO2)

Sedimentary or Igneous (secondary formation)

Basalt (Extrusive Igneous Rock) — igneous

Basalt

Extrusive Igneous Rock

Gneiss (Gneiss (High-grade Regional Metamorphic Rock)) — metamorphic

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Agate in Matrix (Silicon Dioxide (SiO2) within host rock) — mineral

Agate in Matrix

Silicon Dioxide (SiO2) within host rock

Basalt (Basalt (dominated by plagioclase feldspar and pyroxene)) — igneous

Basalt

Basalt (dominated by plagioclase feldspar and pyroxene)

Diorite (Salt and Pepper Rock) (Diorite) — igneous

Diorite (Salt and Pepper Rock)

Diorite

Basalt with Phenocrysts (Porphyritic Basalt) — igneous

Basalt with Phenocrysts

Porphyritic Basalt

Gneiss (High-grade regional metamorphic Gneiss) — metamorphic

Gneiss

High-grade regional metamorphic Gneiss