Rock Identifier

Category

Sedimentary Rock Or Mineral (Depending On Origin And Purity)

Browse sedimentary rock or mineral (depending on origin and purity) specimens identified by the Rock Identifier community.

Learn about Sedimentary Rock Or Mineral (Depending On Origin And Purity) in the encyclopedia

Rock Salt

Asphalt Rock

Rock Gypsum

Calc-Silicate Rock

Calc-Silicate Rock

Conglomerate

Breccia

Coal

Ironstone

Halite

Claystone

Quartzite Sandstone

Quartzite Sandstone

Limestone

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

Sandstone (Pebble)

Arenite (primarily SiO2)

Geode (Unopened) (Silicon Dioxide (SiO2) in sedimentary vugs) — sedimentary

Geode (Unopened)

Silicon Dioxide (SiO2) in sedimentary vugs

Sandstone (Arenite (lithic or quartz sandstone)) — sedimentary

Sandstone

Arenite (lithic or quartz sandstone)

Opal and emerald-like gemstone jewelry (Likely common precious opal (hydrated amorphous silica, SiO₂·nH₂O) paired with green beryl or quartz; metal setting obscures definitive identification) — gemstone

Opal and emerald-like gemstone jewelry

Likely common precious opal (hydrated amorphous silica, SiO₂·nH₂O) paired with green beryl or quartz; metal setting obscures definitive identification

Fossilized Trilobite or Mollusk Fragment (Phylum Arthropoda / Mollusca fossil in sedimentary matrix) — fossil

Fossilized Trilobite or Mollusk Fragment

Phylum Arthropoda / Mollusca fossil in sedimentary matrix

Quartz (Cut and Polished Sphere) (Silicon Dioxide (SiO2)) — mineral

Quartz (Cut and Polished Sphere)

Silicon Dioxide (SiO2)

Red Sandstone (Sedimentary Clastic Rock (Quartz Arenite)) — sedimentary

Red Sandstone

Sedimentary Clastic Rock (Quartz Arenite)

Red sandstone fragment (Quartz-rich sandstone, likely iron-oxide-stained arenite) — sedimentary

Red sandstone fragment

Quartz-rich sandstone, likely iron-oxide-stained arenite

Sandstone pebble (Sandstone (Quartz-rich Arenite)) — sedimentary

Sandstone pebble

Sandstone (Quartz-rich Arenite)

Generic Pebble / Rock Fragment (Lithic fragment / Weathered rock pebble) — sedimentary

Generic Pebble / Rock Fragment

Lithic fragment / Weathered rock pebble

Milky quartz with dark mineral inclusions (Quartz, SiO₂; dark inclusions are not identifiable from the image) — mineral

Milky quartz with dark mineral inclusions

Quartz, SiO₂; dark inclusions are not identifiable from the image

Fossil Snail (Gastropoda (fossilized)) — fossil

Fossil Snail

Gastropoda (fossilized)

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

Quartz (Druzy)

Silicon Dioxide (SiO2)

Sandstone Concretion (Sedimentary Clastic Rock (Silicate-rich)) — sedimentary

Sandstone Concretion

Sedimentary Clastic Rock (Silicate-rich)

Red Jasper or Ironstone concretion (SiO2 or Fe2O3) — sedimentary or mineral

Red Jasper or Ironstone concretion

SiO2 or Fe2O3

sedimentary or mineral

Sandstone (Quartzose Sandstone) (Arenite (SiO2 primarily)) — sedimentary

Sandstone (Quartzose Sandstone)

Arenite (SiO2 primarily)

Quartz Crystal Cluster on Matrix (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal Cluster on Matrix

Silicon Dioxide (SiO2)

Breccia (Breccia (Sedimentary Clastic Rock)) — sedimentary

Breccia

Breccia (Sedimentary Clastic Rock)

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

Sandstone

Arenite (primarily Quartz, SiO2)

Sandstone (Quartzite-rich Cobble) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (Quartzite-rich Cobble)

Clastic sedimentary rock (primarily SiO2)

Conglomerate / Breccia Matrix (Aggregated Rock) (Sedimentary Breccia / Conglomerate) — sedimentary

Conglomerate / Breccia Matrix (Aggregated Rock)

Sedimentary Breccia / Conglomerate

Sandstone (Ferruginous) (Arenite (with iron oxide cement)) — sedimentary

Sandstone (Ferruginous)

Arenite (with iron oxide cement)

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

Banded Gneiss

Gneiss (High-grade Metamorphic Rock)

Glauconitic Sandstone (Glauconitic arenite (contains (K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2)) — sedimentary

Glauconitic Sandstone

Glauconitic arenite (contains (K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2)

Native gold (small nugget or grain) (Native gold, Au) — mineral

Native gold (small nugget or grain)

Native gold, Au

Weathered sandstone or iron-stained mudstone (Clastic sedimentary rock, likely quartz-rich sandstone (SiO₂) with iron-oxide coatings) — sedimentary

Weathered sandstone or iron-stained mudstone

Clastic sedimentary rock, likely quartz-rich sandstone (SiO₂) with iron-oxide coatings

Sandstone with Iron Oxide Concretions (Quartzose Sandstone with Limonite/Hematite) — sedimentary

Sandstone with Iron Oxide Concretions

Quartzose Sandstone with Limonite/Hematite

Sandstone (Clastic Sedimentary Rock) — sedimentary

Sandstone

Clastic Sedimentary Rock

Quartzite (Quartzite (SiO2 silicon dioxide)) — metamorphic

Quartzite

Quartzite (SiO2 silicon dioxide)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Likely weathered quartz-rich rock fragment (Uncertain; possibly quartz sandstone or a pale feldspathic rock) — sedimentary

Likely weathered quartz-rich rock fragment

Uncertain; possibly quartz sandstone or a pale feldspathic rock

Sandstone (Sedimentary Rock (Quartz arenite)) — sedimentary

Sandstone

Sedimentary Rock (Quartz arenite)

Gold Nugget (or Gold Grain) (Native Gold (Au)) — mineral

Gold Nugget (or Gold Grain)

Native Gold (Au)

Diamond (Cluster Ring) (Carbon (C)) — mineral

Diamond (Cluster Ring)

Carbon (C)

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

Quartz-veined Sedimentary Rock (Sedimentary rock with hydrothermal quartz veins) — sedimentary

Quartz-veined Sedimentary Rock

Sedimentary rock with hydrothermal quartz veins

Sandstone (Sedimentary Rock (Quartz arenite)) — sedimentary

Sandstone

Sedimentary Rock (Quartz arenite)

Sandstone (Arenite (primarily SiO2 - Silicon Dioxide)) — sedimentary

Sandstone

Arenite (primarily SiO2 - Silicon Dioxide)

Gold Nugget (Gold (Au)) — mineral

Gold Nugget

Gold (Au)

Weathered quartz-rich rock, likely milky quartz or quartzite (Quartz (SiO₂), possibly quartzite with iron-oxide staining) — mineral

Weathered quartz-rich rock, likely milky quartz or quartzite

Quartz (SiO₂), possibly quartzite with iron-oxide staining

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Red Sandstone (Iron-Rich) (Arenite (Fe2O3)) — sedimentary

Red Sandstone (Iron-Rich)

Arenite (Fe2O3)