Aragonite Star Cluster
Aragonite (Calcium Carbonate, CaCO3)
mineral
Category
Sedimentary (Biogenic Sediment Or Biological Remain)
Browse sedimentary (biogenic sediment or biological remain) specimens identified by the Rock Identifier community.
Learn about Sedimentary (Biogenic Sediment Or Biological Remain) in the encyclopedia
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Pyrite (Iron Pyrites)
Iron Sulfide (FeS2)
mineral
Megalodon Shark Tooth Fossil
Otodus megalodon
sedimentary
Chert (Chert breccia)
SiO2 (Silicon Dioxide)
sedimentary
Quartz Sand/Gravel
Silicon Dioxide (SiO2)
sedimentary
Limestone
Sedimentary rock composed primarily of Calcite (CaCO3)
sedimentary
Fossilized Shark Tooth (Otodus)
Otodus sp. (calcium phosphate/hydroxylellite)
sedimentary
Chert Pebble with Quartz Veining
Microcrystalline Quartz (SiO2)
sedimentary
Chert (or Flint)
Chert (cryptocrystalline quartz), SiO2
Sedimentary
Banded Chert (Flint)
Cryptocrystalline Quartz (SiO2)
sedimentary
Flint
Chert (a form of cryptocrystalline quartz, chemical formula SiO₂)
Mineral
Limestone with Fossil Fragment
Sedimentary carbonate rock (CaCO3)
sedimentary
Fossilized oyster or other bivalve shell
Calcitic bioclast, commonly Ostrea spp. or Exogyra spp.
fossil
Bivalve Internal Mold Fossil
Steinkern (Bivalvia mold)
fossil
Pyrite
Iron Sulfide (FeS2)
mineral
Blue Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Graywacke
Lithic Sandstone (Graywacke)
sedimentary
Amber (Copal)
Fossilized Tree Resin (C10H16O)
mineral
Limonitic Sandstone with Inclusion
Limonitic Quartz Sandstone (primarily SiO2 with FeO(OH)·nH2O)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
fossil
Coquina with Calcite Crystals
Calcareous Bioclastic Grainstone (CaCO3)
sedimentary
Fossiliferous Shale Matrix
Clastic Sedimentary Rock with Brachiopod or Mollusk shell fragments
sedimentary
Chert with Iron Oxide Staining
Microcrystalline Quartz (SiO2) with Limonite/Goethite staining
sedimentary
Dinosaur Bone (Gembone)
Petrified Dinosaur Bone (Apatite/Silica replacement)
sedimentary
Calcite
Calcium Carbonate (CaCO3)
mineral
Chert
Chert (SiO2)
sedimentary
Calcite
Calcium Carbonate (CaCO3)
mineral
Chert (and Fossilized Brachiopod shell)
Sedimentary Cryptocrystalline Quartz (SiO2)
sedimentary
Petrified Wood
Silicified Wood
fossil
Chert (Jasper variety)
Silicon Dioxide (SiO2)
sedimentary
Chert (Jasper/Flint Pebble)
Microcrystalline or Cryptocrystalline Silicon Dioxide (SiO2)
sedimentary
Chert (likely Flint)
Cryptocrystalline Quartz (SiO2)
sedimentary
Limestone (Concretionary or Tufa)
Calcium Carbonate (CaCO3)
sedimentary
Concretion
Siderite or Ironstone Concretion
sedimentary
Fossilized Bone (Petrified Bone)
Permineralized Vertebrate Remains
sedimentary
Shale
Argillite / Shaly Mudstone
sedimentary
Shale
Lutaceous sedimentary rock
sedimentary
Moss-covered Rock Fragment
Weathered Rock Fragment with Epilithic Growth
sedimentary
Fossiliferous Limestone
Calcium Carbonate (CaCO3) with Bioclastic Inclusions
sedimentary
Sandstone
Arenite (primarily composed of SiO2)
sedimentary
Amber
Succinite (specifically for Baltic Amber), Formula: C10H16O
Organic Gemstone (often associated with Sedimentary sequences)
Hag Stone (Odin Stone / Adder Stone)
Perforated Pebble (commonly Chert, Mudstone, or Limestone)
sedimentary