Rock Identifier

Category

Sedimentary Mineral

Browse sedimentary mineral specimens identified by the Rock Identifier community.

Learn about Sedimentary Mineral in the encyclopedia

Coal

Conglomerate

Quartzite Sandstone

Quartzite Sandstone

Glauconite

Breccia

Hutcheonite

Halite

Ironstone

Sperrylite

Baddeleyite

Anatase

Brookite

Sandstone (Clastic Sedimentary Rock) — sedimentary

Sandstone

Clastic Sedimentary Rock

Iron-rich rock fragment (possibly ironstone or limonite/goethite) (Likely ironstone composed largely of goethite/limonite; image alone cannot confirm) — sedimentary

Iron-rich rock fragment (possibly ironstone or limonite/goethite)

Likely ironstone composed largely of goethite/limonite; image alone cannot confirm

Quartz Veined Mudstone (Metasedimentary rock with Quartz (SiO2) veins) — metamorphic

Quartz Veined Mudstone

Metasedimentary rock with Quartz (SiO2) veins

Weathered sandstone or quartz-rich sedimentary rock (Likely quartz arenite/subarkose; predominantly quartz (SiO₂) with feldspar and iron-oxide cement) — sedimentary

Weathered sandstone or quartz-rich sedimentary rock

Likely quartz arenite/subarkose; predominantly quartz (SiO₂) with feldspar and iron-oxide cement

Sandstone (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone

Clastic sedimentary rock (primarily SiO2)

Blue Apatite (Ca5(PO4)3(F,Cl,OH)) — mineral

Blue Apatite

Ca5(PO4)3(F,Cl,OH)

Sandstone (with Iron Oxide) (Quartz Arenite / Ferruginous Sandstone (SiO2 with Fe2O3)) — sedimentary

Sandstone (with Iron Oxide)

Quartz Arenite / Ferruginous Sandstone (SiO2 with Fe2O3)

Weathered sedimentary rock, possibly sandstone (Indeterminate clastic sediment; probable quartz-rich sandstone) — sedimentary

Weathered sedimentary rock, possibly sandstone

Indeterminate clastic sediment; probable quartz-rich sandstone

Tumbled brown stone, possibly jasper or weathered chert (Uncertain; likely microcrystalline quartz (SiO₂), potentially iron-stained jasper/chert) — mineral

Tumbled brown stone, possibly jasper or weathered chert

Uncertain; likely microcrystalline quartz (SiO₂), potentially iron-stained jasper/chert

Red Jasper (Silicon Dioxide (SiO2) with Hematite (Fe2O3)) — mineral

Red Jasper

Silicon Dioxide (SiO2) with Hematite (Fe2O3)

Sedimentary River Rock (Siliciclastic Sedimentary Rock (Quartzite or Sandstone pebble)) — sedimentary

Sedimentary River Rock

Siliciclastic Sedimentary Rock (Quartzite or Sandstone pebble)

Yellow Jasper (Silicon Dioxide (SiO2) with iron hydroxides) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with iron hydroxides

Geode (Unopened) (Silica-rich concretion (SiO2)) — sedimentary

Geode (Unopened)

Silica-rich concretion (SiO2)

Flint (Sedimentary cryptocrystalline quartz (SiO2)) — sedimentary

Flint

Sedimentary cryptocrystalline quartz (SiO2)

Limonite Sandstone (Ferruginous Sandstone (Hydrated Iron Oxide)) — sedimentary

Limonite Sandstone

Ferruginous Sandstone (Hydrated Iron Oxide)

Jasper and Chalcedony Composite (Silicon Dioxide (SiO2) microcrystalline quartz) — sedimentary

Jasper and Chalcedony Composite

Silicon Dioxide (SiO2) microcrystalline quartz

Jasper and Chalcedony (Silicon Dioxide (SiO2) microcrystalline quartz) — sedimentary

Jasper and Chalcedony

Silicon Dioxide (SiO2) microcrystalline quartz

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

Sandstone

Arenite (lithic or quartz sandstone)

Ironstone concretion (likely limonite/goethite-rich) (Iron-oxide-cemented sediment, commonly goethite (FeO(OH)) and/or limonite) — sedimentary

Ironstone concretion (likely limonite/goethite-rich)

Iron-oxide-cemented sediment, commonly goethite (FeO(OH)) and/or limonite

Shale (Argillaceous Sedimentary Rock) — sedimentary

Shale

Argillaceous Sedimentary Rock

Limonite (Iron Ore) (FeO(OH)·nH2O (Hydrous ferric oxide)) — mineral

Limonite (Iron Ore)

FeO(OH)·nH2O (Hydrous ferric oxide)

Tumbled Agate (Silicon Dioxide (SiO2)) — gemstone

Tumbled Agate

Silicon Dioxide (SiO2)

Jasper (Microcrystalline Quartz (SiO2)) — mineral

Jasper

Microcrystalline Quartz (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Howlite (Ca2B5SiO9(OH)5) — mineral

Howlite

Ca2B5SiO9(OH)5

Vein-filled Sedimentary Rock (Silicified sedimentary rock with quartz/calcite vein) — sedimentary

Vein-filled Sedimentary Rock

Silicified sedimentary rock with quartz/calcite vein

Raw Fluorite (Calcium Fluoride (CaF2)) — mineral

Raw Fluorite

Calcium Fluoride (CaF2)

Sandstone (Arenite (SiO2 principal)) — sedimentary

Sandstone

Arenite (SiO2 principal)

Red jasper (likely brecciated or iron-stained jasper) (Jasper, microcrystalline quartz (SiO₂), colored chiefly by iron oxides) — metamorphic

Red jasper (likely brecciated or iron-stained jasper)

Jasper, microcrystalline quartz (SiO₂), colored chiefly by iron oxides

$Veined Quartzite / Vein-filled Sedimentary Rock (Siliciclastic rock with iron oxide-filled fractures) — sedimentary$

Veined Quartzite / Vein-filled Sedimentary Rock

Siliciclastic rock with iron oxide-filled fractures

Amethyst Geode (Quartz (Silicon Dioxide, SiO2) with iron impurities) — mineral

Amethyst Geode

Quartz (Silicon Dioxide, SiO2) with iron impurities

Sandstone or Mudstone with Iron Staining (Ferruginous Sandstone/Mudstone) — Sedimentary

Sandstone or Mudstone with Iron Staining

Ferruginous Sandstone/Mudstone

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

Sandstone (Micaceous)

Arenite (composed primarily of SiO2)

Sandstone (with Iron Staining) (Arenite) — sedimentary

Sandstone (with Iron Staining)

Arenite

Glauconite (Greensand) (Glauconite (K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2) — sedimentary

Glauconite (Greensand)

Glauconite (K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2

Rounded gneiss pebble (Banded gneiss; commonly quartz–feldspar–mica gneiss) — metamorphic

Rounded gneiss pebble

Banded gneiss; commonly quartz–feldspar–mica gneiss

Flint (SiO2 (Microcrystalline Quartz / Chert)) — sedimentary

Flint

SiO2 (Microcrystalline Quartz / Chert)

Sandstone (Arenite (Sedimentary Rock)) — sedimentary

Sandstone

Arenite (Sedimentary Rock)

Sandstone (Sedimentary rock composed mainly of quartz sand grains) — sedimentary

Sandstone

Sedimentary rock composed mainly of quartz sand grains

Limonite (FeO(OH)·nH2O) — mineral

Limonite

FeO(OH)·nH2O

Limonite / Goethite (Ironstone Nodule) (Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)) — mineral

Limonite / Goethite (Ironstone Nodule)

Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)

Banded Limestone (Calcareous sedimentary rock (CaCO3)) — sedimentary

Banded Limestone

Calcareous sedimentary rock (CaCO3)