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

Raw selenite (gypsum) (Gypsum, CaSO₄·2H₂O; translucent variety selenite) — mineral

Raw selenite (gypsum)

Gypsum, CaSO₄·2H₂O; translucent variety selenite

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Quartz Crystal (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Chalcopyrite (CuFeS2 (Copper Iron Sulfide)) — mineral

Chalcopyrite

CuFeS2 (Copper Iron Sulfide)

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

Honey calcite crystal

Calcite (calcium carbonate, CaCO₃)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

Quartz (SiO2 (Silicon dioxide)) — mineral

Quartz

SiO2 (Silicon dioxide)

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Pyrite (Fool's Gold) (Iron Disulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

White Quartz (Silicon Dioxide (SiO2)) — mineral

White Quartz

Silicon Dioxide (SiO2)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

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

Yellow Quartz Pebble

Silicon Dioxide (SiO2)

Polished banded iron formation (BIF) (Banded iron formation; chiefly hematite/magnetite and microcrystalline quartz (chert), with iron silicates) — sedimentary

Polished banded iron formation (BIF)

Banded iron formation; chiefly hematite/magnetite and microcrystalline quartz (chert), with iron silicates

White Quartz (Quartz (Silicon Dioxide, SiO2)) — mineral

White Quartz

Quartz (Silicon Dioxide, SiO2)

Jasper (Microcrystalline Quartz (SiO2) with iron oxide impurities) — sedimentary

Jasper

Microcrystalline Quartz (SiO2) with iron oxide impurities

Quartzite (or Chert/Flint gravel) (Quartzite (SiO2 with iron oxide inclusions)) — metamorphic

Quartzite (or Chert/Flint gravel)

Quartzite (SiO2 with iron oxide inclusions)

Quartz-rich rock, possibly milky quartz (Quartz (SiO₂); the photo may show a quartz-rich rock, but its texture is not clear enough to determine a specific rock name.) — mineral

Quartz-rich rock, possibly milky quartz

Quartz (SiO₂); the photo may show a quartz-rich rock, but its texture is not clear enough to determine a specific rock name.

Quartz pebble (Silicon dioxide (SiO2)) — sedimentary

Quartz pebble

Silicon dioxide (SiO2)

Banded iron formation (ironstone) (BIF; hematite–magnetite–quartz/chert assemblage) — sedimentary

Banded iron formation (ironstone)

BIF; hematite–magnetite–quartz/chert assemblage

Agate (Agate (Silicon Dioxide - SiO2)) — mineral

Agate

Agate (Silicon Dioxide - SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Banded iron formation (ironstone), possibly hematite–magnetite-rich (Banded iron formation; chiefly hematite (Fe₂O₃), magnetite (Fe₃O₄), and chert/microcrystalline quartz (SiO₂)) — sedimentary

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

Banded iron formation; chiefly hematite (Fe₂O₃), magnetite (Fe₃O₄), and chert/microcrystalline quartz (SiO₂)

Banded iron formation fragment (likely hematite–magnetite-rich ironstone) (Banded iron formation; chiefly hematite (Fe₂O₃), magnetite (Fe₃O₄), and silica/chert (SiO₂)) — sedimentary

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

Banded iron formation; chiefly hematite (Fe₂O₃), magnetite (Fe₃O₄), and silica/chert (SiO₂)

Quartz with Chlorite inclusions (SiO2 with (Mg,Fe)3(Si,Al)4O10(OH)2⋅(Mg,Fe)3(OH)6) — mineral

Quartz with Chlorite inclusions

SiO2 with (Mg,Fe)3(Si,Al)4O10(OH)2⋅(Mg,Fe)3(OH)6

Quartz pebble (Silicon dioxide (SiO2)) — sedimentary

Quartz pebble

Silicon dioxide (SiO2)

Jasper or Red Quartzite (SiO2 (Silicon Dioxide with iron oxide impurities)) — sedimentary or metamorphic

Jasper or Red Quartzite

SiO2 (Silicon Dioxide with iron oxide impurities)

sedimentary or metamorphic

Chert or chalcedony nodule (Microcrystalline quartz (SiO₂), possibly weathered chert) — mineral

Chert or chalcedony nodule

Microcrystalline quartz (SiO₂), possibly weathered chert

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

Jasper

Silicon Dioxide (SiO2), Microcrystalline Quartz

Quartz Geode with Chalcedony (Silicon Dioxide (SiO2)) — mineral

Quartz Geode with Chalcedony

Silicon Dioxide (SiO2)

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

Quartz Geode (Unbroken)

Silicon Dioxide (SiO2)

Green Jasper / Chert Pebbles (Microcrystalline Quartz (SiO2)) — sedimentary

Green Jasper / Chert Pebbles

Microcrystalline Quartz (SiO2)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Honey-brown calcite crystal cluster (Calcite (CaCO₃), likely dogtooth or scalenohedral calcite) — mineral

Honey-brown calcite crystal cluster

Calcite (CaCO₃), likely dogtooth or scalenohedral calcite

Quartz-veined Sandstone (Sedimentary rock with quartz vein (SiO2)) — sedimentary

Quartz-veined Sandstone

Sedimentary rock with quartz vein (SiO2)

Quartz Pebble (Silicon dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon dioxide (SiO2)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Milky quartz vein fragment (Quartz (SiO₂), likely massive or vein quartz with minor iron-oxide/clay inclusions) — mineral

Milky quartz vein fragment

Quartz (SiO₂), likely massive or vein quartz with minor iron-oxide/clay inclusions

Yellow Calcite (Polished) (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite (Polished)

Calcium Carbonate (CaCO3)

Optical Calcite (Calcium Carbonate (CaCO3)) — mineral

Optical Calcite

Calcium Carbonate (CaCO3)