Rock Identifier

Category

Mineral Like Byproduct (Technogenic)

Browse mineral like byproduct (technogenic) specimens identified by the Rock Identifier community.

Arfvedsonite with Garnet (Na3(Fe2+,Mg)4Fe3+Si8O22(OH)2) — igneous

Arfvedsonite with Garnet

Na3(Fe2+,Mg)4Fe3+Si8O22(OH)2

Blue Chalcedony (Silicon Dioxide (SiO2)) — mineral

Blue Chalcedony

Silicon Dioxide (SiO2)

Mica Schist (Mica Schist (predominantly Muscovite or Biotite)) — metamorphic

Mica Schist

Mica Schist (predominantly Muscovite or Biotite)

Epidote (Unakite-related) (Epidote (Ca2(Al,Fe)3(SiO4)3(OH))) — metamorphic

Epidote (Unakite-related)

Epidote (Ca2(Al,Fe)3(SiO4)3(OH))

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

Amethyst

Silicon Dioxide with Iron impurities (SiO2)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Quartz (River Pebble) (Silicon Dioxide (SiO2)) — mineral

Quartz (River Pebble)

Silicon Dioxide (SiO2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Chalcedony (Chalcedony (SiO2)) — mineral

Chalcedony

Chalcedony (SiO2)

Jasper (Jasper (Silicate mineral, SiO2)) — sedimentary

Jasper

Jasper (Silicate mineral, SiO2)

Agate (Banded Chalcedony (SiO2)) — mineral

Agate

Banded Chalcedony (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

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

Quartz (Clear Quartz/Rock Crystal)

Silicon Dioxide (SiO2)

Quartzite (Milky Quartz pebble) (Silicon Dioxide (SiO2)) — metamorphic

Quartzite (Milky Quartz pebble)

Silicon Dioxide (SiO2)

Mahogany Obsidian (Obsidian (Volcanic Glass with Hematite/Magnetite inclusions), SiO2) — igneous

Mahogany Obsidian

Obsidian (Volcanic Glass with Hematite/Magnetite inclusions), SiO2

Schist (Graphite or Mica rich) (Crystalline Schist (often containing Muscovite, Biotite, or Graphite)) — metamorphic

Schist (Graphite or Mica rich)

Crystalline Schist (often containing Muscovite, Biotite, or Graphite)

Milky Quartz in Conglomerate Matrix (Silicon Dioxide (SiO2) within Clastic Sedimentary Rock) — sedimentary

Milky Quartz in Conglomerate Matrix

Silicon Dioxide (SiO2) within Clastic Sedimentary Rock

Marble (Recrystallized Calcite Rock (CaCO3)) — metamorphic

Marble

Recrystallized Calcite Rock (CaCO3)

White Jade / Jadeite (NaAlSi2O6 (Sodium Aluminum Silicate)) — metamorphic

White Jade / Jadeite

NaAlSi2O6 (Sodium Aluminum Silicate)

Quartz Geode (Cracked) (Quartz (Silicon Dioxide, SiO2)) — sedimentary

Quartz Geode (Cracked)

Quartz (Silicon Dioxide, SiO2)

Azurite and Malachite (Azurite (Cu3(CO3)2(OH)2) and Malachite (Cu2(CO3)(OH)2)) — mineral

Azurite and Malachite

Azurite (Cu3(CO3)2(OH)2) and Malachite (Cu2(CO3)(OH)2)

Chert (Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint)

Silicon Dioxide (SiO2)

Sandstone (with minor quartz and possible clay components) (Clastic Sedimentary Rock (SiO2 dominated)) — sedimentary

Sandstone (with minor quartz and possible clay components)

Clastic Sedimentary Rock (SiO2 dominated)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Gneiss (specifically Biotite Gneiss) (Gneiss (high-grade metamorphic rock primarily composed of Silicates)) — metamorphic

Gneiss (specifically Biotite Gneiss)

Gneiss (high-grade metamorphic rock primarily composed of Silicates)

Chalcopyrite (Chalcopyrite (CuFeS2)) — mineral

Chalcopyrite

Chalcopyrite (CuFeS2)

Magnetite (Magnetite (Iron(II,III) oxide, Fe3O4)) — mineral

Magnetite

Magnetite (Iron(II,III) oxide, Fe3O4)

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

Sandstone

Arenite (composed primarily of SiO2)

Sandstone (likely Ferruginous) (Arenite (SiO2 with iron oxide impurities)) — sedimentary

Sandstone (likely Ferruginous)

Arenite (SiO2 with iron oxide impurities)

Schist (Micaceous Schist) (Mica Schist) — metamorphic

Schist (Micaceous Schist)

Mica Schist

Black Star Diopside (Diopside (CaMgSi2O6) with asterism) — Mineral

Black Star Diopside

Diopside (CaMgSi2O6) with asterism

Garnet (Almandine/Pyrope series) (Silicate mineral (Almandine: Fe3Al2Si3O12; Pyrope: Mg3Al2Si3O12)) — mineral

Garnet (Almandine/Pyrope series)

Silicate mineral (Almandine: Fe3Al2Si3O12; Pyrope: Mg3Al2Si3O12)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Common Opal (Hydrated amorphous form of silica (SiO2·nH2O)) — mineral

Common Opal

Hydrated amorphous form of silica (SiO2·nH2O)

Red Sandstone (Arenite (Ferruginous Sandstone)) — sedimentary

Red Sandstone

Arenite (Ferruginous Sandstone)

Amazonite (Amazonite (KAlSi3O8 - Microcline)) — mineral

Amazonite

Amazonite (KAlSi3O8 - Microcline)

Green Aventurine (Silicon Dioxide (SiO2) with inclusions (typically Fuchsite)) — mineral

Green Aventurine

Silicon Dioxide (SiO2) with inclusions (typically Fuchsite)

Quartz Geode Fragment (Silicon Dioxide (SiO2)) — mineral

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Hematite (Hematite, Iron(III) oxide (Fe2O3)) — mineral

Hematite

Hematite, Iron(III) oxide (Fe2O3)

Yellow Quartz Pebble (SiO2 (Silicon Dioxide)) — mineral

Yellow Quartz Pebble

SiO2 (Silicon Dioxide)

Chert (White Chert / Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (White Chert / Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)