Rock Identifier

Category

Sedimentary Rock (Altered)

Browse sedimentary rock (altered) specimens identified by the Rock Identifier community.

Learn about Sedimentary Rock (Altered) in the encyclopedia

Asphalt Rock

Rock Gypsum

Calc-Silicate Rock

Calc-Silicate Rock

Greenstone

Diabase

Metabasalt

Conglomerate

Breccia

Metarhyolite

Metagabbro

Ironstone

Limestone

Conglomerate (Conglomerate (Sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (Sedimentary rock)

River Pebble (Siltstone/Mudstone) (Clastic sedimentary rock) — sedimentary

River Pebble (Siltstone/Mudstone)

Clastic sedimentary rock

Conglomerate (or Breccia) (Clastic Sedimentary Rock) — sedimentary

Conglomerate (or Breccia)

Clastic Sedimentary Rock

Sandstone (likely Graywacke or Lithic Sandstone) (Clastic Sedimentary Rock) — sedimentary

Sandstone (likely Graywacke or Lithic Sandstone)

Clastic Sedimentary Rock

Conglomeratic Sandstone (Clastic Sedimentary Rock) — sedimentary

Conglomeratic Sandstone

Clastic Sedimentary Rock

Sandstone (Arenite (Sedimentary Rock)) — sedimentary

Sandstone

Arenite (Sedimentary Rock)

Polygenetic Conglomerate (or Breccia) (Clastic Sedimentary Rock) — sedimentary

Polygenetic Conglomerate (or Breccia)

Clastic Sedimentary Rock

Sandstone (Arenite (Sedimentary Rock)) — sedimentary

Sandstone

Arenite (Sedimentary Rock)

Sandstone (with Siltstone/Greywacke variations) (Sedimentary Rock (Clastic)) — sedimentary

Sandstone (with Siltstone/Greywacke variations)

Sedimentary Rock (Clastic)

Pebble (likely Siltstone or fine-grained Sandstone) (Sedimentary Clastic Rock) — sedimentary

Pebble (likely Siltstone or fine-grained Sandstone)

Sedimentary Clastic Rock

River Rock (likely Siltstone or fine-grained Sandstone) (Clastic Sedimentary Rock) — sedimentary

River Rock (likely Siltstone or fine-grained Sandstone)

Clastic Sedimentary Rock

Shale (possibly Carbonaceous or Oil Shale) (Argillaceous Sedimentary Rock) — sedimentary

Shale (possibly Carbonaceous or Oil Shale)

Argillaceous Sedimentary Rock

Shale (Argillaceous sedimentary rock) — sedimentary

Shale

Argillaceous sedimentary rock

Shale (Lutaceous Sedimentary Rock) — sedimentary

Shale

Lutaceous Sedimentary Rock

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Sandstone with Quartz Sphere (Arenite (SiO2-rich sedimentary rock) with Quartzite/Rose Quartz sphere) — sedimentary

Sandstone with Quartz Sphere

Arenite (SiO2-rich sedimentary rock) with Quartzite/Rose Quartz sphere

Silty Shale (Silty Shale (Fissile Sedimentary Rock)) — sedimentary

Silty Shale

Silty Shale (Fissile Sedimentary Rock)

Shale (Ferruginous) (Laminated Mudrock (Siliciclastic Sedimentary Rock)) — sedimentary

Shale (Ferruginous)

Laminated Mudrock (Siliciclastic Sedimentary Rock)

Red Sandstone Pebble (Sedimentary quartz sandstone) — sedimentary

Red Sandstone Pebble

Sedimentary quartz sandstone

Sandstone (lithic wacke) (Arenite / Lithic Wacke (mostly SiO2 with rock fragments)) — sedimentary

Sandstone (lithic wacke)

Arenite / Lithic Wacke (mostly SiO2 with rock fragments)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Sandstone Pebble (Sedimentary quartz arenite) — sedimentary

Sandstone Pebble

Sedimentary quartz arenite

Sandstone (Common Quartz Pebble/Rock) (Sedimentary rock / Quartz arenite) — sedimentary

Sandstone (Common Quartz Pebble/Rock)

Sedimentary rock / Quartz arenite

Basalt (Porphyritic Basalt) (Extrusive Igneous Rock) — igneous

Basalt (Porphyritic Basalt)

Extrusive Igneous Rock

Satin Spar (Selenite) (Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)) — mineral

Satin Spar (Selenite)

Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)

Shale (Argillaceous Rock) — sedimentary

Shale

Argillaceous Rock

Sandstone with Quartz Vein (Arenite with Crystalline Silica (SiO2)) — sedimentary

Sandstone with Quartz Vein

Arenite with Crystalline Silica (SiO2)

Brecciated jasper, possibly rainforest jasper (Jasper: microcrystalline to cryptocrystalline quartz, SiO₂, commonly containing hematite, goethite, chlorite, epidote, and other iron- and manganese-bearing minerals) — gemstone

Brecciated jasper, possibly rainforest jasper

Jasper: microcrystalline to cryptocrystalline quartz, SiO₂, commonly containing hematite, goethite, chlorite, epidote, and other iron- and manganese-bearing minerals

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

Quartz-veined Sandstone

Sedimentary rock with quartz vein (SiO2)

Weathered porphyritic volcanic rock (likely basaltic andesite) (Porphyritic basaltic andesite; mineral assemblage likely plagioclase, pyroxene, and iron oxides) — igneous

Weathered porphyritic volcanic rock (likely basaltic andesite)

Porphyritic basaltic andesite; mineral assemblage likely plagioclase, pyroxene, and iron oxides

Herkimer Diamond (Quartz (Silica - SiO2)) — mineral

Herkimer Diamond

Quartz (Silica - SiO2)

Sandstone (River Cobble) (Sandstone (principally composed of Quartz, SiO2)) — sedimentary

Sandstone (River Cobble)

Sandstone (principally composed of Quartz, SiO2)

Fish Fossil in Limestone (Lycoptera (likely) in Micritic Limestone) — sedimentary

Fish Fossil in Limestone

Lycoptera (likely) in Micritic Limestone

Ironstone Concretion / Chert Nodules (Iron-rich Sedimentary Concretion (Fe2O3 / SiO2 mix)) — sedimentary

Ironstone Concretion / Chert Nodules

Iron-rich Sedimentary Concretion (Fe2O3 / SiO2 mix)

Sandstone Concretion (Sedimentary Concretion (Quartz sand bound by mineral cement)) — sedimentary

Sandstone Concretion

Sedimentary Concretion (Quartz sand bound by mineral cement)

Sandstone Pebble (Sedimentary Rock (Quartzose Sandstone)) — sedimentary

Sandstone Pebble

Sedimentary Rock (Quartzose Sandstone)

Citrine Quartz (Citrine (Silicon Dioxide - SiO2)) — Mineral

Citrine Quartz

Citrine (Silicon Dioxide - SiO2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Shale (Lutaceous Rock (Hydrous Aluminum Silicates)) — sedimentary

Shale

Lutaceous Rock (Hydrous Aluminum Silicates)

Sandstone (Iron-stained) (Arenite with Limonite/Hematite staining) — sedimentary

Sandstone (Iron-stained)

Arenite with Limonite/Hematite staining

Quartz vein in weathered host rock (Quartz (SiO₂), likely in a weathered metamorphic or igneous matrix) — mineral

Quartz vein in weathered host rock

Quartz (SiO₂), likely in a weathered metamorphic or igneous matrix

Garnet Schist (Garnetiferous Micaceous Schist) — metamorphic

Garnet Schist

Garnetiferous Micaceous Schist