Rock Identifier

Category

Sedimentary (With Some Aspects Of Mineral Replacement)

Browse sedimentary (with some aspects of mineral replacement) specimens identified by the Rock Identifier community.

Learn about Sedimentary (With Some Aspects Of Mineral Replacement) in the encyclopedia

Coal

Claystone

Shale

Marl

Black Shale

Rock Salt

Super Seven

Anatase

Limestone

Siltstone

Pisolite

Serpentine

Rhodonite (Manganese Silicate (Mn,Fe,Mg,Ca)SiO3) — mineral

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

Ironstone Concretion (Siderite or Hematite-bonded Concretion) — sedimentary

Ironstone Concretion

Siderite or Hematite-bonded Concretion

Magnetite (Iron Ore) (Magnetite (Fe3O4)) — mineral

Magnetite (Iron Ore)

Magnetite (Fe3O4)

Basalt pebble (Basalt; primarily plagioclase feldspar, pyroxene, and often olivine) — igneous

Basalt pebble

Basalt; primarily plagioclase feldspar, pyroxene, and often olivine

Petrified Wood (Silicified wood (Quartz/Chalcedony replacement of cellulose)) — fossil

Petrified Wood

Silicified wood (Quartz/Chalcedony replacement of cellulose)

Sandstone Concretion (Septarian or Carbonate-cemented Sandstone Concretion) — sedimentary

Sandstone Concretion

Septarian or Carbonate-cemented Sandstone Concretion

Quartzite (Metamorphic Rock consisting chiefly of Quartz (SiO2)) — metamorphic

Quartzite

Metamorphic Rock consisting chiefly of Quartz (SiO2)

Banded Chert (Silicon dioxide (SiO2)) — sedimentary

Banded Chert

Silicon dioxide (SiO2)

Red Sandstone (Clastic Sandstone (typically Quartz-rich with Iron Oxide)) — sedimentary

Red Sandstone

Clastic Sandstone (typically Quartz-rich with Iron Oxide)

Granite Gneiss with Garnet (Garnetiferous Gneiss) — metamorphic

Granite Gneiss with Garnet

Garnetiferous Gneiss

Gneiss with Quartz/Feldspar Vein (Quartz-Feldspathic Gneiss) — metamorphic

Gneiss with Quartz/Feldspar Vein

Quartz-Feldspathic Gneiss

Gneiss (Gneiss (High-grade metamorphic rock)) — metamorphic

Gneiss

Gneiss (High-grade metamorphic rock)

Chert (specifically Silex or Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Silex or Flint)

Microcrystalline Quartz (SiO2)

Chert (Common Opal/Jasper variety) (Microcrystalline Quartz (SiO2) with hydration) — sedimentary

Chert (Common Opal/Jasper variety)

Microcrystalline Quartz (SiO2) with hydration

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

Sandstone Concretion

Clastic sedimentary rock (primarily Quartz SiO2)

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

Chert (Jasper/Flint variety)

Microcrystalline Quartz (SiO2)

Orbicular jasper (picture jasper) (Silicified volcanic or sedimentary rock; chiefly microcrystalline quartz (SiO₂) with iron-oxide pigments) — sedimentary

Orbicular jasper (picture jasper)

Silicified volcanic or sedimentary rock; chiefly microcrystalline quartz (SiO₂) with iron-oxide pigments

Brown Chert (Cryptocrystalline Silica (SiO2)) — sedimentary

Brown Chert

Cryptocrystalline Silica (SiO2)

Ironstone Concretion / Limonite Node (Goethite and Limonite (FeO(OH) nH2O)) — sedimentary

Ironstone Concretion / Limonite Node

Goethite and Limonite (FeO(OH) nH2O)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Gneiss (Granitic Gneiss) (Gneiss (composed primarily of Quartz, Feldspar, and Mica)) — metamorphic

Gneiss (Granitic Gneiss)

Gneiss (composed primarily of Quartz, Feldspar, and Mica)

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

Chert (Microcrystalline quartz (SiO2)) — sedimentary

Chert

Microcrystalline quartz (SiO2)

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

Chert / Flint Nodule

Microcrystalline Quartz (SiO2)

Gneiss (Metamorphic Rock (Gneissic texture)) — metamorphic

Gneiss

Metamorphic Rock (Gneissic texture)

Sandstone (likely Arkosic or Quartzose) (Sandstone (SiO2 dominated)) — sedimentary

Sandstone (likely Arkosic or Quartzose)

Sandstone (SiO2 dominated)

Chert (and Petrified Wood) (Silicon Dioxide (SiO2)) — sedimentary

Chert (and Petrified Wood)

Silicon Dioxide (SiO2)

Gneiss (Gneiss (High-grade metamorphic rock)) — metamorphic

Gneiss

Gneiss (High-grade metamorphic rock)

Gneiss Pebble (Gneiss) — metamorphic

Gneiss Pebble

Gneiss

Agate Geode (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — mineral

Agate Geode

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz-rich metallic sulfide ore (probable pyrite-bearing rock) (Pyrite, FeS₂, in a quartz-rich host; exact identification is uncertain from the image) — mineral

Quartz-rich metallic sulfide ore (probable pyrite-bearing rock)

Pyrite, FeS₂, in a quartz-rich host; exact identification is uncertain from the image

Fossilized Coral (Petoskey Stone type) (Hexagonaria percarinata (Fossilized Rugose Coral)) — sedimentary

Fossilized Coral (Petoskey Stone type)

Hexagonaria percarinata (Fossilized Rugose Coral)

Limonite and Goethite (Ironstone) (Hydrous Iron Oxide Mixture (FeO(OH)·nH2O)) — sedimentary

Limonite and Goethite (Ironstone)

Hydrous Iron Oxide Mixture (FeO(OH)·nH2O)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Sandstone (Sedimentary Rock (Quartz arenite)) — sedimentary

Sandstone

Sedimentary Rock (Quartz arenite)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Gneiss (Gneiss (High-grade Metamorphic Rock)) — metamorphic

Gneiss

Gneiss (High-grade Metamorphic Rock)

Polished brown jasper (Jasper (microcrystalline quartz, SiO₂), likely iron-oxide-rich variety) — mineral

Polished brown jasper

Jasper (microcrystalline quartz, SiO₂), likely iron-oxide-rich variety

Sandstone Cobble (Arenite (primarily SiO2)) — sedimentary

Sandstone Cobble

Arenite (primarily SiO2)

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

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Brown Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Brown Chert

Microcrystalline Quartz (SiO2)