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.

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Granite Cobble (Granite (Phaneritic igneous rock composed of Quartz, Feldspar, and Mica)) — igneous

Granite Cobble

Granite (Phaneritic igneous rock composed of Quartz, Feldspar, and Mica)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Fuchsite (Fuchsite (a variety of Muscovite mica, K(Al,Cr)2(AlSi3O10)(OH)2)) — mineral

Fuchsite

Fuchsite (a variety of Muscovite mica, K(Al,Cr)2(AlSi3O10)(OH)2)

Fulgurite (Luechatelierite (SiO2 glass)) — mineraloid

Fulgurite

Luechatelierite (SiO2 glass)

Basalt (River Rock Cobble) (Extrusive mafic igneous rock) — igneous

Basalt (River Rock Cobble)

Extrusive mafic igneous rock

Basalt with Vesicular Texture (Beach Cobble) (Vesicular Basalt (Aphanitic Igneous Rock)) — igneous

Basalt with Vesicular Texture (Beach Cobble)

Vesicular Basalt (Aphanitic Igneous Rock)

Green Tourmaline (Verdelite (Silicate mineral); Na(Li,Al)3Al6(BO3)3Si6O18(OH)4) — mineral

Green Tourmaline

Verdelite (Silicate mineral); Na(Li,Al)3Al6(BO3)3Si6O18(OH)4

Amethyst (SiO2 (Silicon Dioxide) - a variety of Quartz) — Mineral

Amethyst

SiO2 (Silicon Dioxide) - a variety of Quartz

Granite (Phaneritic Igneous Rock (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)) — igneous

Granite

Phaneritic Igneous Rock (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)

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

White Quartz (Milky Quartz)

Quartz (Silicon Dioxide, SiO2)

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

Diorite (Salt and Pepper Rock)

Diorite

Sandstone (Arenite (SiO2 principal)) — sedimentary

Sandstone

Arenite (SiO2 principal)

Basalt (Basalt) — igneous

Basalt

Basalt

Aura Quartz (Pink/Rose Aura Quartz) (Silicon Dioxide (SiO2) bonded with Platinum and/or Silver) — mineral

Aura Quartz (Pink/Rose Aura Quartz)

Silicon Dioxide (SiO2) bonded with Platinum and/or Silver

Magnetite / Iron-Rich Concretion (Magnetite (Fe3O4) or Bog Iron Limonite) — mineral

Magnetite / Iron-Rich Concretion

Magnetite (Fe3O4) or Bog Iron Limonite

Bicolor Quartz (Milk Quartz with Slag or Dark Inclusions) (Silicon Dioxide (SiO2) with impurities) — mineral

Bicolor Quartz (Milk Quartz with Slag or Dark Inclusions)

Silicon Dioxide (SiO2) with impurities

Carnelian (Chalcedony (cryptocrystalline quartz), SiO2) — Mineral

Carnelian

Chalcedony (cryptocrystalline quartz), SiO2

Turquoise (Hydrous phosphate of copper and aluminum (CuAl6(PO4)4(OH)8·4H2O)) — mineral

Turquoise

Hydrous phosphate of copper and aluminum (CuAl6(PO4)4(OH)8·4H2O)

Peach Moonstone (Moonstone (KAlSi3O8)) — mineral

Peach Moonstone

Moonstone (KAlSi3O8)

Sunstone (Feldspar variety) (Plagioclase Feldspar (Na,Ca)(Al,Si)4O8) — mineral

Sunstone (Feldspar variety)

Plagioclase Feldspar (Na,Ca)(Al,Si)4O8

Yellow Chalcedony (Carnelian/Yellow Agate) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — Mineral

Yellow Chalcedony (Carnelian/Yellow Agate)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Sandstone with Calcite Vein (Clastic sedimentary rock (primarily SiO2) with Calcium Carbonate (CaCO3) infilling) — sedimentary

Sandstone with Calcite Vein

Clastic sedimentary rock (primarily SiO2) with Calcium Carbonate (CaCO3) infilling

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

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Hag Stone (Perforated Sedimentary Rock (typically Limestone or Sandstone)) — sedimentary

Hag Stone

Perforated Sedimentary Rock (typically Limestone or Sandstone)

Chert (Flint) (Chert (SiO2)) — sedimentary

Chert (Flint)

Chert (SiO2)

Dyed Blue Agate (Silicon Dioxide (SiO2)) — Mineral

Dyed Blue Agate

Silicon Dioxide (SiO2)

Basalt (Basalt) — igneous

Basalt

Basalt

Banded Agate (Agate (Cryptocrystalline variety of Silica, SiO2)) — mineral

Banded Agate

Agate (Cryptocrystalline variety of Silica, SiO2)

Basalt (Vesicular) (Extrusive mafic igneous rock) — igneous

Basalt (Vesicular)

Extrusive mafic igneous rock

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Petrified Wood (Silicified Wood (primarily SiO2 - Silicon Dioxide)) — sedimentary

Petrified Wood

Silicified Wood (primarily SiO2 - Silicon Dioxide)

Granite (Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)) — igneous

Granite

Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)

Basalt (Mafic extrusive volcanic rock (composed primarily of Plagioclase feldspar and Pyroxene)) — igneous

Basalt

Mafic extrusive volcanic rock (composed primarily of Plagioclase feldspar and Pyroxene)

Conglomerate (Conglomerate (Detrital sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (Detrital sedimentary rock)

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

Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Basalt (Mafic extrusive igneous rock) — igneous

Basalt

Mafic extrusive igneous rock

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Carnelian (Orange Agate) (Silicon Dioxide (SiO2)) — mineral

Carnelian (Orange Agate)

Silicon Dioxide (SiO2)

Yellow Quartz (Citrine Quartz variety / Ferruginous Quartz) (Silicon Dioxide (SiO2) with iron inclusions) — mineral

Yellow Quartz (Citrine Quartz variety / Ferruginous Quartz)

Silicon Dioxide (SiO2) with iron inclusions

Dendritic Agate (specifically Orange/Tumbled) (Silicon Dioxide (SiO2) with Oxide Inclusions) — mineral

Dendritic Agate (specifically Orange/Tumbled)

Silicon Dioxide (SiO2) with Oxide Inclusions

Black Onyx (Silicon dioxide (SiO2) - Chalcedony variety) — mineral

Black Onyx

Silicon dioxide (SiO2) - Chalcedony variety