Shale
Lutaceous Sedimentary Rock
sedimentary
Category
Sedimentary (Imitation)
Browse sedimentary (imitation) specimens identified by the Rock Identifier community.
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Green Sandstone Pebble (River/Beach Pebble)
Glauconitic Sandstone
sedimentary
Limestone with Chert
Calcium Carbonate (CaCO3) with Silica (SiO2) inclusions
sedimentary
Fossilized Fish (Lepidotes)
Lepidotes sp. (Order: Lepisosteiformes)
sedimentary
Sandstone
Arenite (Silicon Dioxide with various mineral cements)
sedimentary
Bivalve Fossil
Bivalvia (Phylum Mollusca)
Fossil
Banded Slate Pebble
Metamorphosed Mudstone / Slate
metamorphic
Argillite (with Barnacles)
Argillite (metamorphosed mudstone/shale)
metamorphic
Sandstone Pebble
Sedimentary Rock (Quartzose Sandstone)
sedimentary
Sandstone Pebble
Sedimentary Rock (Quartz Arenite)
sedimentary
Raw selenite (gypsum)
Gypsum, CaSO₄·2H₂O; translucent variety selenite
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Variety: Agate / Chalcedony)
Silicon Dioxide (SiO2)
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
sedimentary
Fossilized Limestone with Crinoid Stem
Carboniferous Limestone (containing Crinoidea ossicles)
fossil
Limonite (Iron Stone Concretion)
Limonite (Hydrous Iron Oxide) - FeO(OH)·nH2O
mineral
Carnelian Agate
Chalcedony (SiO2)
mineral
Chert
Chert (Microcrystalline Quartz)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Chert (Jasper/Agate variety)
Microcrystalline Quartz (SiO2)
sedimentary
Fossil Brachiopod or Mollusk Cast
Phylum Brachiopoda / Mollusca internal mold
fossil
Bivalve Fossil (Shell-bearing Sedimentary Rock)
Class Bivalvia (Phylum Mollusca) within a Calcarenite/Sandstone matrix
fossil
Sandstone
Clastic Sedimentary Rock (Quartz arenite)
sedimentary
Sandstone
Clastic sedimentary rock (Quartz arenite)
sedimentary
Sandstone (likely Arkose or Lithic)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Conglomerate
Clast-supported polymict conglomerate
sedimentary
Fossiliferous Limestone (or Bryozoan/Coral Fossil Pebble)
Biogenic Sedimentary Rock (Calcium Carbonate, CaCO3)
sedimentary
Tumbled brecciated jasper
Silica-rich microcrystalline quartz/chalcedony (SiO₂), with iron-oxide and other mineral inclusions
mineral
Tumbled quartz-rich pebble
Microcrystalline quartz (SiO₂), possibly weathered chert or chalcedony
mineral
Red Jasper
Silicon Dioxide (SiO2 with Hematite inclusions)
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite or Limonite inclusions
sedimentary
Quartz (Chert/Chalcedony variety)
Silicon Dioxide (SiO2)
sedimentary
Red Jasper
Chalcedony (SiO2) with iron inclusions
sedimentary
Chert (Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Red Jasper (Tumbled)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary/mineral
Quartz Geode
Silicon Dioxide (SiO2) within a geode
mineral
Red Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with iron impurities
mineral