Shale
Fissile Siliciclastic Sedimentary Rock
sedimentary
Category
Man Made Rock (Sedimentary Analogue)
Browse man made rock (sedimentary analogue) specimens identified by the Rock Identifier community.
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Granite, possibly granodiorite
Coarse-grained felsic plutonic rock; chiefly quartz (SiO₂), potassium feldspar and plagioclase feldspar, with biotite and/or hornblende
igneous
Sedimentary Rock Fragments
Clastic Sedimentary Rock
sedimentary
Chert (and Jasper/Chalcedony mixture)
Microcrystalline Quartz (SiO2)
sedimentary
Sedimentary Rock (Limestone or Siltstone pebble)
Sedimentary rock fragment
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Flint
Silicon Dioxide (SiO2) - Chert variety
sedimentary
Fossilized Brachiopod or Gastropod in Chert/Limestone
Phylum Brachiopoda / Mollusca
fossil
Pyrite
Iron Sulfide (FeS2)
mineral
Petoskey Stone / Rugose Coral Fossil
Hexagonaria percarinata
fossil
Petoskey Stone
Hexagonaria percarinata
fossil
Chert / Green Jasper
Silicon Dioxide (SiO2)
sedimentary
Bivalve Seashell Fossil
Class Bivalvia
fossil
Chert
Microcrystalline quartz (SiO2)
sedimentary
Chert (often called Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Jasper variety)
Silicon Dioxide (SiO2)
sedimentary
River Rock / Stream Pebble
Fluvial Clast / Rounded Sedimentary Particle
Sedimentary Rock (possibly composed of various minerals)
Aragonite Star Cluster
Aragonite (Calcium Carbonate, CaCO3)
mineral
Sandstone
Quartz Sandstone (predominantly)
Sedimentary
Shale
Shale (clastic sedimentary rock)
sedimentary
Shale
Shale (Lutite)
sedimentary
Shale
Fissile mudrock (composed primarily of clay minerals and quartz)
sedimentary
Weathered Sandstone or Siltstone
Sedimentary Rock
sedimentary
Sandstone or Limestone
Sedimentary Rock
Sedimentary
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Shale (with Iron Staining)
Argillaceous mudstone / Shale
sedimentary
Chert (Jasper Variant likely)
Silicon Dioxide (SiO2)
Sedimentary Rock or Mineral (depending on origin and purity)
Chert (Tan/Brown variety)
Chert (Silicon Dioxide, SiO2)
sedimentary
Chert (Nodule)
Chert (SiO2)
sedimentary
Coquina
Biogenic Limestone (Calcite/Aragonite base, CaCO3)
sedimentary
Chert (specifically Jasper or Flint variety)
Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (and Flint)
Silicon Dioxide (SiO2)
sedimentary
Sedimentary Rock with Crafts (Pet Rock)
Sedimentary rock decorated with synthetic materials
sedimentary
Chalcanthite (Likely Synthetic/Lab-Grown)
Hydrated copper(II) sulfate (CuSO4·5H2O)
mineral
Sandstone Cobble with Iron Staining
Arenite with Limonite/Hematite staining
sedimentary
Precious Coral (Red Coral)
Corallium rubrum (Calcium Carbonate, CaCO3)
mineral
Conglomerate (Quartz Pebble Conglomerate)
Quartz Pebble Conglomerate
sedimentary
Chert (specifically Red Chert or Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (variations include Flint/Novaculite)
Chert (formula: SiO2)
sedimentary
Chert (Jasper variety)
Silicon Dioxide (SiO2)
sedimentary
Chert (often called Flint for darker varieties)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
sedimentary
Shale
Clastic sedimentary rock (primarily clay and silt minerals)
sedimentary