Sandstone (Ferruginous)
Arenite (primarily SiO2 with Iron Oxide cement)
sedimentary
Category
Sedimentary (Or Mineraloid)
Browse sedimentary (or mineraloid) specimens identified by the Rock Identifier community.
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Shale
Fissile Mudstone
sedimentary
Sandstone (Ferruginous)
Clastic Sedimentary Rock (SiO2 with Fe2O3/FeOOH cement)
sedimentary
Pyrite in Shale
Iron Disulfide (FeS2)
mineral
Banded Sedimentary Rock
Sedimentary rock with Liesegang banding
sedimentary
Optical Calcite
Calcium Carbonate (CaCO3)
mineral
Sedimentary Breccia
Breccia (Clastic Sedimentary Rock)
sedimentary
Weathered sandstone fragment
Quartz-rich sandstone (compositionally uncertain)
sedimentary
Blue Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Orange Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Satin Spar (Selenite)
Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)
mineral
Weathered Sandstone or Siltstone
Sedimentary Rock
sedimentary
Breccia
Sedimentary Breccia
sedimentary
Sandstone
Sedimentary Arenite
sedimentary
Concretion
Sedimentary Concretion
sedimentary
Conglomerate
Sedimentary Conglomerate
sedimentary
Conglomerate
Sedimentary Conglomerate
sedimentary
Conglomerate
Sedimentary Conglomerate
sedimentary
Breccia Pebble
Sedimentary Breccia
sedimentary
Sandstone Concretion
Sedimentary concretion
Sedimentary
Sandstone or Limestone
Sedimentary Rock
Sedimentary
Sandstone Pebble
Sandstone (primarily Quartz, SiO2)
sedimentary
Quartzite Sandstone / Quartz Sandstone
Quartz Sandstone (SiO2 with minor mineral impurities)
sedimentary
Shale or Mudstone
Argillaceous sedimentary rock
sedimentary
Banded sandstone pebble
Quartz-rich sandstone, likely iron-oxide- and organic/mineral-stained; exact variety uncertain
sedimentary
Brachiopod Fossil in Limestone
Phylum Brachiopoda (likely Order Spiriferida), CaCO3 (Calcite)
sedimentary
Sandstone Anvil / Nutting Stone
Quartzose Sandstone (Sedimentary Rock)
sedimentary
Shale with Trace Fossils
Fissile mudrock (Shale)
sedimentary
Shale
Shale (clastic sedimentary rock)
sedimentary
Sandstone
Arenite
sedimentary
Shale
Shale (Lutite)
sedimentary
Shale
Fissile mudstone (rich in clay minerals and quartz)
sedimentary
Shale
Fissile mudrock (composed primarily of clay minerals and quartz)
sedimentary
Quartz, Sandstone, and Siltstone specimens
Silicon Dioxide (SiO2) and Clastic Sedimentary Rocks
mineral and sedimentary
Fossiliferous Sedimentary Rock
Sedimentary Rock with Invertebrate Fossil Imprint
fossil
Sedimentary Breccia
Breccia (Clastic Sedimentary Rock)
sedimentary
Sedimentary Breccia
Clastic Breccia (CaCO3/SiO2 matrix)
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Jasper (Chert / Chalcedony)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
General Rock and Mineral Collection (Center: Angelite / Blue Anhydrite)
Anhydrite (Calcium Sulfate, CaSO4)
Mineral