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

Orange Calcite (Calcite (Calcium Carbonate - CaCO3)) — mineral

Orange Calcite

Calcite (Calcium Carbonate - CaCO3)

Green Calcite (Calcium Carbonate (CaCO3)) — mineral

Green Calcite

Calcium Carbonate (CaCO3)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Yellow Calcite (Calcium Carbonate (CaCO3)) — Mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Agate (Silicon Dioxide (Chalcedony), SiO2) — sedimentary

Agate

Silicon Dioxide (Chalcedony), SiO2

Likely pale green calcite (Calcite (calcium carbonate, CaCO₃)) — mineral

Likely pale green calcite

Calcite (calcium carbonate, CaCO₃)

Limestone with Calcite Crystals (Sedimentary Rock containing Calcium Carbonate (CaCO3)) — sedimentary

Limestone with Calcite Crystals

Sedimentary Rock containing Calcium Carbonate (CaCO3)

Quartz on Schist (Silicon Dioxide (SiO2) on Foliated Metamorphic Rock) — metamorphic

Quartz on Schist

Silicon Dioxide (SiO2) on Foliated Metamorphic Rock

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

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

Massive White Quartz

Silicon Dioxide (SiO2)

Weathered ironstone concretion (possible hematite/goethite concretion) (Hematite–goethite-rich ferruginous concretion; primarily Fe₂O₃ and FeO(OH) in a silica/clay matrix) — sedimentary

Weathered ironstone concretion (possible hematite/goethite concretion)

Hematite–goethite-rich ferruginous concretion; primarily Fe₂O₃ and FeO(OH) in a silica/clay matrix

Moqui Marble (Sandstone Concretion) (Hematite-cemented Sandstone (Fe2O3 + SiO2)) — sedimentary

Moqui Marble (Sandstone Concretion)

Hematite-cemented Sandstone (Fe2O3 + SiO2)

Septarian Nodule (Septarian Concretion (CaCO3 with Siderite/Calcite)) — sedimentary

Septarian Nodule

Septarian Concretion (CaCO3 with Siderite/Calcite)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz with Host Rock (Silicon Dioxide (SiO2)) — mineral

Quartz with Host Rock

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Red calcite (Calcite (CaCO₃), likely iron- or manganese-colored) — mineral

Red calcite

Calcite (CaCO₃), likely iron- or manganese-colored

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

Quartz (Milky/Crystalline variety)

Silicon Dioxide (SiO2)

Tumbled quartz-rich pebble (Quartz (SiO₂), likely with iron-oxide staining and minor inclusions) — mineral

Tumbled quartz-rich pebble

Quartz (SiO₂), likely with iron-oxide staining and minor inclusions

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

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

Banded iron formation (BIF), composed chiefly of hematite (Fe₂O₃), magnetite (Fe₃O₄), and microcrystalline quartz (SiO₂)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Small Fragment) (Silicon Dioxide (SiO2)) — mineral

Quartz (Small Fragment)

Silicon Dioxide (SiO2)

Milky quartz (Quartz (silicon dioxide, SiO₂)) — mineral

Milky quartz

Quartz (silicon dioxide, SiO₂)

Quartz (Clear/Milky) (Silicon Dioxide (SiO2)) — mineral

Quartz (Clear/Milky)

Silicon Dioxide (SiO2)

Yellow Quartzite (River Pebble) (Metamorphic Quartzite (SiO2)) — metamorphic

Yellow Quartzite (River Pebble)

Metamorphic Quartzite (SiO2)

Milky quartz with iron-oxide staining (Quartz, silicon dioxide (SiO₂), cryptocrystalline-to-coarse crystalline aggregate) — mineral

Milky quartz with iron-oxide staining

Quartz, silicon dioxide (SiO₂), cryptocrystalline-to-coarse crystalline aggregate

Quartz-rich rock, likely milky quartz or quartz vein fragment (Quartz (silicon dioxide, SiO₂), possibly with minor feldspar or calcite) — mineral

Quartz-rich rock, likely milky quartz or quartz vein fragment

Quartz (silicon dioxide, SiO₂), possibly with minor feldspar or calcite

Calcite crystal cluster (Calcite (calcium carbonate, CaCO₃)) — mineral

Calcite crystal cluster

Calcite (calcium carbonate, CaCO₃)

Likely weathered quartz or quartz-rich pebble (Quartz, silicon dioxide (SiO₂)) — mineral

Likely weathered quartz or quartz-rich pebble

Quartz, silicon dioxide (SiO₂)

Quartz (Iron-stained or Milky) (Silicon Dioxide (SiO2)) — mineral

Quartz (Iron-stained or Milky)

Silicon Dioxide (SiO2)

Pyrite (Iron Pyrite) (Iron Sulfide (FeS2)) — mineral

Pyrite (Iron Pyrite)

Iron Sulfide (FeS2)

Iron-rich concretion or weathered ironstone pebble (Goethite–hematite-bearing limonite concretion (tentative)) — sedimentary

Iron-rich concretion or weathered ironstone pebble

Goethite–hematite-bearing limonite concretion (tentative)

Chert (Flint Nodules) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint Nodules)

Silicon Dioxide (SiO2)

Red Jasper with Quartz Veining (Silicon Dioxide (SiO2) with Hematite impurities) — sedimentary

Red Jasper with Quartz Veining

Silicon Dioxide (SiO2) with Hematite impurities

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Tumbled yellow calcite (Calcite (CaCO₃), likely honey/yellow calcite) — mineral

Tumbled yellow calcite

Calcite (CaCO₃), likely honey/yellow calcite

Orange Moss Agate / Carnelian Agate (Silicon dioxide (SiO2) - variety Chalcedony) — sedimentary

Orange Moss Agate / Carnelian Agate

Silicon dioxide (SiO2) - variety Chalcedony

Quartz vein in iron-stained host rock (Quartz (SiO₂) with limonite/goethite staining, likely in altered basalt or another dark volcanic host) — mineral

Quartz vein in iron-stained host rock

Quartz (SiO₂) with limonite/goethite staining, likely in altered basalt or another dark volcanic host

Clear quartz fragment (Quartz (silicon dioxide, SiO₂)) — mineral

Clear quartz fragment

Quartz (silicon dioxide, SiO₂)

Moqui Marble (Shaman Stone) (Ironstone Concretion (Goethite/Hematite Shell)) — sedimentary

Moqui Marble (Shaman Stone)

Ironstone Concretion (Goethite/Hematite Shell)