Rock Identifier

Category

Industrial Byproduct (Anthropogenic Rock Like Material)

Browse industrial byproduct (anthropogenic rock like material) specimens identified by the Rock Identifier community.

Learn about Industrial Byproduct (Anthropogenic Rock Like Material) in the encyclopedia

Calc-Silicate Rock

Calc-Silicate Rock

Argillite

Dunite

Porcelanite

Felsite

Granulite

Metarhyolite

Limonite

Orbicular Granite

Orbicular Granite

Granodiorite

Bauxite

Metabasalt

Weathered quartz-rich nodule, possibly agate or chalcedony (Microcrystalline quartz (SiO₂), potentially with iron-oxide staining or a druzy coating) — mineral

Weathered quartz-rich nodule, possibly agate or chalcedony

Microcrystalline quartz (SiO₂), potentially with iron-oxide staining or a druzy coating

Polished brecciated jasper bracelet (Jasper, microcrystalline quartz (SiO₂), commonly with hematite and iron-oxide inclusions) — gemstone

Polished brecciated jasper bracelet

Jasper, microcrystalline quartz (SiO₂), commonly with hematite and iron-oxide inclusions

Blue slag glass / industrial glass fragment (Artificial silicate glass, composition variable; likely copper- or cobalt-colored furnace slag) — mineral

Blue slag glass / industrial glass fragment

Artificial silicate glass, composition variable; likely copper- or cobalt-colored furnace slag

Quartzite (Metamorphic Quartzite (predominantly SiO2)) — metamorphic

Quartzite

Metamorphic Quartzite (predominantly SiO2)

Quartz-lined vesicle in basalt (amygdaloidal basalt) (Amygdaloidal basalt with drusy quartz; predominantly plagioclase, pyroxene, and iron oxides) — igneous

Quartz-lined vesicle in basalt (amygdaloidal basalt)

Amygdaloidal basalt with drusy quartz; predominantly plagioclase, pyroxene, and iron oxides

Sandstone Cobble with Iron Staining (Arenite with Limonite/Hematite staining) — sedimentary

Sandstone Cobble with Iron Staining

Arenite with Limonite/Hematite staining

Sandstone (Clastic Sedimentary Rock) — sedimentary

Sandstone

Clastic Sedimentary Rock

Diamond (Native Carbon (C)) — mineral

Diamond

Native Carbon (C)

Weathered river cobble, possibly sandstone or volcanic tuff (Indeterminate lithology; likely fine-grained sandstone/siltstone, with possible iron-oxide veining) — sedimentary

Weathered river cobble, possibly sandstone or volcanic tuff

Indeterminate lithology; likely fine-grained sandstone/siltstone, with possible iron-oxide veining

Polished chalcedony (likely jasper or agate) (Microcrystalline quartz, SiO₂; chalcedony with iron-oxide inclusions) — mineral

Polished chalcedony (likely jasper or agate)

Microcrystalline quartz, SiO₂; chalcedony with iron-oxide inclusions

Black Diamond (Carbonado) (Carbonado (Polycrystalline Diamond)) — gemstone

Black Diamond (Carbonado)

Carbonado (Polycrystalline Diamond)

Mudstone (Argillite) — sedimentary

Mudstone

Argillite

Likely quartz-rich rock fragment (Quartz (SiO₂), possibly a fragment of quartzite or silica-rich slag) — mineral

Likely quartz-rich rock fragment

Quartz (SiO₂), possibly a fragment of quartzite or silica-rich slag

Amethyst cluster (Quartz, silicon dioxide (SiO₂), purple variety colored mainly by iron impurities and irradiation) — mineral

Amethyst cluster

Quartz, silicon dioxide (SiO₂), purple variety colored mainly by iron impurities and irradiation

Weathered quartz-rich rock fragment (Indeterminate; likely quartz-bearing silicate rock) — mineral

Weathered quartz-rich rock fragment

Indeterminate; likely quartz-bearing silicate rock

Quartz geode (druzy quartz cavity) (Silica, SiO₂; microcrystalline-to-crystalline quartz lining a volcanic vesicle) — mineral

Quartz geode (druzy quartz cavity)

Silica, SiO₂; microcrystalline-to-crystalline quartz lining a volcanic vesicle

Polished/tumbled unakite (probable) (Unakite; epidote + pink potassium feldspar + quartz) — metamorphic

Polished/tumbled unakite (probable)

Unakite; epidote + pink potassium feldspar + quartz

Quartz-rich breccia or quartz vein fragment (Silica, primarily quartz (SiO₂), with possible chlorite, feldspar, or iron-oxide inclusions) — mineral

Quartz-rich breccia or quartz vein fragment

Silica, primarily quartz (SiO₂), with possible chlorite, feldspar, or iron-oxide inclusions

Small rounded pebble (likely quartz or quartz-rich stone) (Uncertain; possibly microcrystalline quartz (SiO₂)) — mineral

Small rounded pebble (likely quartz or quartz-rich stone)

Uncertain; possibly microcrystalline quartz (SiO₂)

Chert (variations include Flint/Jasper) (Chert (SiO2)) — sedimentary

Chert (variations include Flint/Jasper)

Chert (SiO2)

Iron-stained quartz-rich rock, possibly quartzite or silicified breccia (Quartz (SiO₂)-dominant rock with iron-oxide minerals, chiefly hematite/goethite) — metamorphic

Iron-stained quartz-rich rock, possibly quartzite or silicified breccia

Quartz (SiO₂)-dominant rock with iron-oxide minerals, chiefly hematite/goethite

Sandstone Pebble (Sandstone (primarily Quartz, SiO2)) — sedimentary

Sandstone Pebble

Sandstone (primarily Quartz, SiO2)

Granodiorite (Granodiorite (intermediate plutonic rock)) — igneous

Granodiorite

Granodiorite (intermediate plutonic rock)

Graywacke (Lithic Sandstone (Graywacke)) — sedimentary

Graywacke

Lithic Sandstone (Graywacke)

Basalt (Basalt) — igneous

Basalt

Basalt

Pumice (Pumice (Vesicular volcanic glass / Rhyolite or Trachyte)) — igneous

Pumice

Pumice (Vesicular volcanic glass / Rhyolite or Trachyte)

Likely weathered river pebble (Indeterminate lithology; possibly fine-grained sandstone, siltstone, or chert) — sedimentary

Likely weathered river pebble

Indeterminate lithology; possibly fine-grained sandstone, siltstone, or chert

Sandstone Pebble (Sandstone (primarily SiO2)) — sedimentary

Sandstone Pebble

Sandstone (primarily SiO2)

Schist (Mica Schist (Medium-grade Metamorphic Rock)) — Metamorphic

Schist

Mica Schist (Medium-grade Metamorphic Rock)

Gneissic Granite (Granite Gneiss) — metamorphic

Gneissic Granite

Granite Gneiss

Dacite (Dacite (intermediate volcanic rock high in silica)) — igneous

Dacite

Dacite (intermediate volcanic rock high in silica)

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

Garnet (Almandine)

Almandine, Fe3Al2(SiO4)3

Rough Blue Sapphire (Corundum (Al2O3)) — mineral

Rough Blue Sapphire

Corundum (Al2O3)

Chalcedony (Chalcedony (cryptocrystalline Silicon Dioxide, SiO2)) — mineral

Chalcedony

Chalcedony (cryptocrystalline Silicon Dioxide, SiO2)

Grey Agate (Tumbled) (Silicon Dioxide (SiO2)) — mineral

Grey Agate (Tumbled)

Silicon Dioxide (SiO2)

Chert (specifically Iron-stained River Cobble) (Silicon Dioxide (SiO2)) — sedimentary

Chert (specifically Iron-stained River Cobble)

Silicon Dioxide (SiO2)

Pumice (Pumice (Amorphous volcanic glass)) — igneous

Pumice

Pumice (Amorphous volcanic glass)

Glass (Amorphous Silicon Dioxide (SiO2)) — mineraloid

Glass

Amorphous Silicon Dioxide (SiO2)

Jasper (Silicon Dioxide (SiO2)) — sedimentary

Jasper

Silicon Dioxide (SiO2)

Tumbled iron-rich stone, possibly jasper or weathered basalt (Indeterminate; likely iron-stained microcrystalline quartz (jasper) or altered basalt) — igneous

Tumbled iron-rich stone, possibly jasper or weathered basalt

Indeterminate; likely iron-stained microcrystalline quartz (jasper) or altered basalt

Tumbled quartzite or quartz-rich beach stone (Quartzite; predominantly microcrystalline quartz (SiO₂)) — metamorphic

Tumbled quartzite or quartz-rich beach stone

Quartzite; predominantly microcrystalline quartz (SiO₂)

Polished metallic sulfide-bearing pebble (Likely pyrite-bearing slate, schist, or sulfide-rich ore; exact identification requires testing) — mineral

Polished metallic sulfide-bearing pebble

Likely pyrite-bearing slate, schist, or sulfide-rich ore; exact identification requires testing