Moqui Marble (Shaman Stone)
Iron Oxide Concretion (Goethite/Hematite shell with Sandstone core)
sedimentary
Category
Sedimentary (Imitation)
Browse sedimentary (imitation) specimens identified by the Rock Identifier community.
Learn about Sedimentary (Imitation) in the encyclopedia
View all →
Sandstone (Ferruginous)
Arenite (Fe-rich)
sedimentary
Chert (Beach Pebble)
Microcrystalline Quartz (SiO2)
sedimentary
Brachiopod Fossil in Matrix
Phylum Brachiopoda
fossil
Fossilized Fish Skeleton in Matrix
Vertebrata (Class: Actinopterygii), typically found in limestone or shale matrices
sedimentary
Banded Iron Formation
Banded Iron Formation (BIF)
sedimentary
Glauconitic Sandstone
Glauconitic sandstone ((K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2)
sedimentary
Sandstone or Siltstone
Arenite or Siltstone
sedimentary
Banded Sedimentary Rock
Stratified Siliciclastic / Arenite or Siltstone with Mineral Bands
sedimentary
Weathered Sedimentary Rock with Liesegang Rings
Sandstone or Siltstone with Iron Oxide Banding
sedimentary
Sandstone (Sedimentary Rock)
Arenite (SiO2 based)
sedimentary
Chalk (Sedimentary Limestone)
Calcite (CaCO3)
sedimentary
Chert (Chalcedony-rich sedimentary rock)
Cryptocrystalline Quartz (SiO2)
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Chert / Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Jasper with Hematite Inclusions
Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3)
sedimentary
Limonite (Ironstone Concretion)
Hydrated iron(III) oxide-hydroxide (FeO(OH)·nH2O)
mineral
Chert with Limestone
Microcrystalline Quartz (SiO2) in Calcium Carbonate (CaCO3) matrix
sedimentary
Blue calcite (probable)
Calcite, calcium carbonate (CaCO₃)
mineral
Rough amber-like brown mineral specimen
Uncertain from photograph; possibly iron-stained quartz, common opal, or resinous amber
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with iron hydroxides
sedimentary
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
sedimentary
Jasper
Silicon dioxide (SiO2)
sedimentary
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Yellow Jasper
Silicon dioxide (SiO2)
sedimentary
Geode (Unopened)
Silica-rich concretion (SiO2)
sedimentary
Jasper and Ironstone (likely Jasperized Ironstone)
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3)
sedimentary
Coquina / Fossiliferous Limestone
Fossiliferous Limestone / CaCO3
sedimentary
Fossiliferous Limestone with Brachiopod
Phylum Brachiopoda in Sedimentary Matrix (CaCO3)
fossil
Sandstone (Common Quartz Pebble/Rock)
Sedimentary rock / Quartz arenite
sedimentary
Conglomerate
Conglomerate rock
sedimentary
Sandstone with Iron Oxide Coating
Arenite (SiO2 with Fe2O3 impurities)
sedimentary
Sandstone (Ferruginous)
Arenite (with Goethite/Limonite cement)
sedimentary
Fossiliferous Limestone with Rugose Coral
Calcite (CaCO3) matrix containing Rugosa (order of extinct solitary and colonial corals)
sedimentary
Shale or Argillite
Shale (sedimentary) / Argillite (metamorphic)
Sedimentary or Metamorphic (low-grade)
Chert Nodules in Sedimentary Rock
Microcrystalline Quartz (SiO2) within Clastic Matrix
sedimentary
Ocean Jasper
Orbicular Jasper (Silicon Dioxide, SiO2)
sedimentary
Sandstone (Weathered Fragment)
Clastic Sedimentary Rock
sedimentary
Sandstone (Heart-shaped pebble)
Sedimentary Quartz Sandstone
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Selenite / Gypsum
Gypsum (CaSO4·2H2O)
Mineral