Rock Identifier

Category

Sedimentary (Chemically Precipitated) Or Metamorphic

Browse sedimentary (chemically precipitated) or metamorphic specimens identified by the Rock Identifier community.

Learn about Sedimentary (Chemically Precipitated) Or Metamorphic in the encyclopedia

Conglomerate

Quartzite Sandstone

Quartzite Sandstone

Metabasalt

Eulysite

Breccia

Ironstone

Anthracite

Metaquartzite

Slate

Marble

Hornfels

Metarhyolite

Honey calcite (likely) (Calcite, calcium carbonate (CaCO₃)) — mineral

Honey calcite (likely)

Calcite, calcium carbonate (CaCO₃)

Barite Rose (Barium Sulfate (BaSO4)) — mineral

Barite Rose

Barium Sulfate (BaSO4)

Banded iron formation (likely iron-rich metamorphic rock) (Banded iron formation; hematite–magnetite with chert/jasper (Fe₂O₃/Fe₃O₄ and SiO₂)) — metamorphic

Banded iron formation (likely iron-rich metamorphic rock)

Banded iron formation; hematite–magnetite with chert/jasper (Fe₂O₃/Fe₃O₄ and SiO₂)

Quartzite Pebble (River Rock) (Metamorphic Quartzite (predominantly SiO2)) — metamorphic

Quartzite Pebble (River Rock)

Metamorphic Quartzite (predominantly SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Sandstone with Liesegang Rings (Clastic Sedimentary Rock with Iron Oxide Precipitates (SiO2 + Fe2O3)) — sedimentary

Sandstone with Liesegang Rings

Clastic Sedimentary Rock with Iron Oxide Precipitates (SiO2 + Fe2O3)

Sand Grain (Silica/Quartz Grain) (Silicon Dioxide (SiO2)) — sedimentary

Sand Grain (Silica/Quartz Grain)

Silicon Dioxide (SiO2)

Weathered limestone boulder (Limestone, composed mainly of calcite (CaCO₃); exact identification cannot be confirmed from the image alone.) — sedimentary

Weathered limestone boulder

Limestone, composed mainly of calcite (CaCO₃); exact identification cannot be confirmed from the image alone.

Weathered porous limestone (Calcite-rich limestone (CaCO₃), possibly fossiliferous or dolomitic) — sedimentary

Weathered porous limestone

Calcite-rich limestone (CaCO₃), possibly fossiliferous or dolomitic

Banded iron formation (ironstone), possibly jasper–hematite (Banded iron formation; chiefly hematite (Fe₂O₃), magnetite (Fe₃O₄), and silica (microcrystalline quartz/chert)) — sedimentary

Banded iron formation (ironstone), possibly jasper–hematite

Banded iron formation; chiefly hematite (Fe₂O₃), magnetite (Fe₃O₄), and silica (microcrystalline quartz/chert)

Green Chert (Silicon Dioxide (SiO2)) — sedimentary

Green Chert

Silicon Dioxide (SiO2)

Chert (Flint) with Limonite Staining (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Flint) with Limonite Staining

Microcrystalline Quartz (SiO2)

Chert (Jasper/Flint variety) (Silicon dioxide (SiO2)) — sedimentary

Chert (Jasper/Flint variety)

Silicon dioxide (SiO2)

Banded Chert Pebble (Silicon Dioxide (SiO2)) — sedimentary

Banded Chert Pebble

Silicon Dioxide (SiO2)

Honey calcite on matrix (Calcite, CaCO₃) — mineral

Honey calcite on matrix

Calcite, CaCO₃

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Likely serpentinite (serpentine-rich rock) (Serpentinite, composed mainly of serpentine-group minerals (e.g., antigorite, lizardite, or chrysotile)) — metamorphic

Likely serpentinite (serpentine-rich rock)

Serpentinite, composed mainly of serpentine-group minerals (e.g., antigorite, lizardite, or chrysotile)

Oolitic Limestone (Egg Stone) (Oolite (Chemical sedimentary rock, primarily CaCO3)) — sedimentary

Oolitic Limestone (Egg Stone)

Oolite (Chemical sedimentary rock, primarily CaCO3)

Feldspar-rich Quartzite (Meta-arkose (Quartz-Feldspar Quartzite)) — metamorphic

Feldspar-rich Quartzite

Meta-arkose (Quartz-Feldspar Quartzite)

Quartzite with inclusions (Quartzite (primarily SiO2)) — metamorphic

Quartzite with inclusions

Quartzite (primarily SiO2)

Red jasper (likely iron-rich chert) (Microcrystalline quartz (SiO₂) colored by hematite/goethite; possibly ferruginous chert) — sedimentary

Red jasper (likely iron-rich chert)

Microcrystalline quartz (SiO₂) colored by hematite/goethite; possibly ferruginous chert

Quartzite with Sandstone/Iron staining (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite with Sandstone/Iron staining

Metamorphic Quartzite (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Banded Iron Formation (Banded Iron Formation (BIF), typically composed of magnetite, hematite, and chert) — sedimentary

Banded Iron Formation

Banded Iron Formation (BIF), typically composed of magnetite, hematite, and chert

Quartz Druzy in Chert Pebble (Silicon Dioxide (SiO2) - Microcrystalline & Crystalline Quartz) — sedimentary

Quartz Druzy in Chert Pebble

Silicon Dioxide (SiO2) - Microcrystalline & Crystalline Quartz

Quartzite River Stone (Metamorphosed Quartz-rich Sandstone (SiO2)) — metamorphic

Quartzite River Stone

Metamorphosed Quartz-rich Sandstone (SiO2)

Pyrite in Quartz Matrix (Iron Sulfide (FeS2) embedded in Silicon Dioxide (SiO2)) — mineral

Pyrite in Quartz Matrix

Iron Sulfide (FeS2) embedded in Silicon Dioxide (SiO2)

Jasper (Silicon Dioxide (Microcrystalline Quartz, SiO2)) — sedimentary

Jasper

Silicon Dioxide (Microcrystalline Quartz, SiO2)

Quartz (Milky/Chalcedony variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Chalcedony variety)

Silicon Dioxide (SiO2)

Jasper Pebble (SiO2 (Microcrystalline Quartz)) — sedimentary

Jasper Pebble

SiO2 (Microcrystalline Quartz)

Jasper (Silicon dioxide (Microcrystalline quartz, SiO2)) — sedimentary

Jasper

Silicon dioxide (Microcrystalline quartz, SiO2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Blue Apatite (Fluorapatite (Ca5(PO4)3F)) — mineral

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Banded iron formation (ironstone), likely hematite–magnetite-rich (Banded iron formation (BIF); chiefly hematite (Fe₂O₃), magnetite (Fe₃O₄), and quartz (SiO₂)) — metamorphic

Banded iron formation (ironstone), likely hematite–magnetite-rich

Banded iron formation (BIF); chiefly hematite (Fe₂O₃), magnetite (Fe₃O₄), and quartz (SiO₂)

Sandstone (with Iron Staining) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2)

Chert (Septarian Nodules-like) (Silicon dioxide (SiO2)) — sedimentary

Chert (Septarian Nodules-like)

Silicon dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Green Opal (Hydrated Silica (SiO2·nH2O)) — mineraloid

Green Opal

Hydrated Silica (SiO2·nH2O)

Quartzite Pebble (Quartzite) — metamorphic

Quartzite Pebble

Quartzite