Polygenetic Conglomerate (or Breccia)
Clastic Sedimentary Rock
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 (Sedimentary Rock)
sedimentary
Sandstone (with Siltstone/Greywacke variations)
Sedimentary Rock (Clastic)
sedimentary
Pebble (likely Siltstone or fine-grained Sandstone)
Sedimentary Clastic Rock
sedimentary
River Rock (likely Siltstone or fine-grained Sandstone)
Clastic Sedimentary Rock
sedimentary
Shale (possibly Carbonaceous or Oil Shale)
Argillaceous Sedimentary Rock
sedimentary
Shale
Argillaceous sedimentary rock
sedimentary
Shale
Lutaceous Sedimentary Rock
sedimentary
Sandstone with Quartz Sphere
Arenite (SiO2-rich sedimentary rock) with Quartzite/Rose Quartz sphere
sedimentary
Silty Shale
Silty Shale (Fissile Sedimentary Rock)
sedimentary
Shale (Ferruginous)
Laminated Mudrock (Siliciclastic Sedimentary Rock)
sedimentary
Sandstone
Arenite
sedimentary
Red Sandstone Pebble
Sedimentary quartz sandstone
sedimentary
Sandstone (lithic wacke)
Arenite / Lithic Wacke (mostly SiO2 with rock fragments)
sedimentary
Sandstone Pebble
Sedimentary quartz arenite
sedimentary
Sandstone (Common Quartz Pebble/Rock)
Sedimentary rock / Quartz arenite
sedimentary
Basalt (Porphyritic Basalt)
Extrusive Igneous Rock
igneous
Satin Spar (Selenite)
Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)
mineral
Sandstone with Quartz Vein
Arenite with Crystalline Silica (SiO2)
sedimentary
Shale
Argillaceous Rock
sedimentary
Quartz-veined Sandstone
Sedimentary rock with quartz vein (SiO2)
sedimentary
Weathered porphyritic volcanic rock (likely basaltic andesite)
Porphyritic basaltic andesite; mineral assemblage likely plagioclase, pyroxene, and iron oxides
igneous
Herkimer Diamond
Quartz (Silica - SiO2)
mineral
Sandstone (River Cobble)
Sandstone (principally composed of Quartz, SiO2)
sedimentary
Fish Fossil in Limestone
Lycoptera (likely) in Micritic Limestone
sedimentary
Ironstone Concretion / Chert Nodules
Iron-rich Sedimentary Concretion (Fe2O3 / SiO2 mix)
sedimentary
Sandstone Concretion
Sedimentary Concretion (Quartz sand bound by mineral cement)
sedimentary
Sandstone Pebble
Sedimentary Rock (Quartzose Sandstone)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone (Iron-stained)
Arenite with Limonite/Hematite staining
sedimentary
Garnet Schist
Garnetiferous Micaceous Schist
metamorphic
Quartz vein in weathered host rock
Quartz (SiO₂), likely in a weathered metamorphic or igneous matrix
mineral
Shale
Lutaceous Rock (Hydrous Aluminum Silicates)
sedimentary
Fossilized Bone
Permineralized Vertebrate Bone
fossil
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Brown Chalcedony
Silicon Dioxide (SiO2)
mineral
Pebble or Cobble (likely composed of sandstone or conglomerate)
Clastic Sedimentary Rock (specific name like sandstone, conglomerate, or breccia would require microscopic analysis of clast size and angularity)
Sedimentary Rock (possibly a conglomerate or coarse-grained sandstone)
Sandstone
Arenite
sedimentary
Quartz Geode
Silicon dioxide (SiO2)
sedimentary
Druzy Quartz on Sandstone
Silicon Dioxide (SiO2) with Quartz Crystals on Clastic Sedimentary Rock
sedimentary
Sandstone
Arenite
sedimentary