Shale with Siltstone layering
Sedimentary Clastic Rock (Mudstone/Shale)
sedimentary
Category
Sedimentary Rock (Metamorphosed)
Browse sedimentary rock (metamorphosed) specimens identified by the Rock Identifier community.
Learn about Sedimentary Rock (Metamorphosed) in the encyclopedia
View all →
Sandstone
Arenite (SiO2 predominantly)
sedimentary
Jade (Nephrite or Jadeite)
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2 - a variety of actinolite, an amphibole mineral); Jadeite (Na(Al,Fe3+)Si2O6 - a pyroxene mineral)
Metamorphic rock (for both Nephrite and Jadeite)
Smoky Quartz and Chalcedony Geode Fragment
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite
sedimentary
Sandstone (Tumbled / Rounded)
Sedimentary Rock (Quartz arenite)
sedimentary
Devil's Toenail
Gryphaea (extinct genus of foam oysters, typically composed of Calcite CaCO3)
sedimentary
Sandstone (with secondary weathering/concretion)
Arenite (composed primarily of Quartz, SiO2)
sedimentary
Shale
Shale (Lutite)
sedimentary
Sandstone
Arenite (primarily composed of SiO2)
sedimentary
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Iron Oxide cement)
sedimentary
Shale
Fissile Mudstone
sedimentary
Sandstone (Ferruginous)
Clastic Sedimentary Rock (SiO2 with Fe2O3/FeOOH cement)
sedimentary
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 oxides)
sedimentary
Limonite (Ochreous Sandstone)
Hydrous ferric oxides (FeO(OH)qnH2O)
sedimentary
Pumice
Pumice (Amorphous volcanic glass)
Igneous
Sandstone
Arenite
sedimentary
Quartz Vein in Siltstone
Siltstone with Quartz (SiO2) inclusion
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Chert / Flint Nodule
Microcrystalline quartz (SiO2)
sedimentary
Fossilized Gastropod Shell
Gastropoda (Class) replacement / internal cast (steinkern)
fossil
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Conglomerate
Polymictic Conglomerate
sedimentary
Agate
Silicon Dioxide (SiO2) - variety Chalcedony
mineral
Agate (specifically a Yellow/Honey Agate)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
mineral
Quartz Crystal on Matrix
Silicon Dioxide (SiO2)
mineral
Sandstone (Sedimentary Rock)
Arenite (SiO2 based)
sedimentary
River Rocks (Basalt and Sedimentary Stones)
Mafic Igneous Rock (Basalt) and Clastic Sedimentary Rock
igneous and sedimentary
Chert / Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Sandstone (specifically Banded Sandstone)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone
Sandstone (Arenite)
sedimentary
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Quartz Pebble
Silicon dioxide (SiO2)
sedimentary
Sandstone
Arenite (SiO2 predominantly)
sedimentary
Chert Nodules in Sedimentary Rock
Microcrystalline Quartz (SiO2) within Clastic Matrix
sedimentary
Chert (Chert / Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Conglomerate
Conglomerate (Clastic Sedimentary Rock)
sedimentary
Gravel / Small Pebble
Rock Fragment (Gravel)
sedimentary
Metaconglomerate
Protolith: Conglomerate (comprising SiO2, Al2O3, etc.)
metamorphic
Quartz Geode
Silicon Dioxide (SiO2) within a geode
mineral
Fossiliferous Sandstone / Fossil Fragment
Fossiliferous Sedimentary Matrix with Indeterminate Fossil Material
fossil