Sedimentary Rock

Fine-grained sedimentary rock, likely mudstone

Mudstone (clay- and silt-sized siliciclastic sedimentary rock)

Chert (Chalcedony-rich sedimentary rock)

Cryptocrystalline Quartz (SiO2)

Sedimentary Rock with Crafts (Pet Rock)

Sedimentary rock decorated with synthetic materials

Weathered iron-rich sedimentary rock (probable laterite/ironstone)

Limonite/goethite-rich ferruginous material; commonly approximated as FeO(OH)·nH₂O with clay and quartz

Banded Sedimentary Rock (Wishbone Stone / Banded Quartzite or Limestone)

Silicified limestone or banded sedimentary rock with mineral veins

Siltstone Pebble with Veining

Siltstone

Shiva Lingam

Cryptocrystalline Quartz (Jasperiod Siltstone)

Light-colored sedimentary rock, likely limestone

Calcite-rich limestone (primarily CaCO₃); exact identification requires testing

Iron-rich sedimentary rock, likely banded iron formation fragment

Banded iron formation (BIF), composed chiefly of hematite/magnetite and chert

Weathered coal-bearing sedimentary rock (likely shale or mudstone with coal fragments)

Carbonaceous shale/mudstone; predominantly clay minerals, quartz, and organic carbon

Fossilized Shark Tooth in Matrix

Otodus obliquus (Chondrichthyes: Lamniformes)

Sandstone

Arenite

Weathered brown rock, likely sandstone

Quartz-rich sandstone (composition uncertain from image)

Weathered sandstone fragment

Quartz-rich sandstone (compositionally uncertain)

Sandstone Anvil / Nutting Stone

Quartzose Sandstone (Sedimentary Rock)

Coal

Bituminous Coal / Anthracite

Bivalve Fossil

Bivalvia (Phylum Mollusca)

Conglomerate

Clast-supported polymictic conglomerate

Conglomerate

Clast-supported polymict conglomerate

Weathered quartz-rich rock, possibly quartzite

Quartzite (tentative identification; exact rock type cannot be confirmed from the image)

Fossil trilobite

Trilobita (likely a spiny or enrolled trilobite; exact genus unclear)

Rounded weathered pebble

Likely fine-grained sandstone, siltstone, or weathered volcanic rock; exact identification is uncertain from the image

Shale

Shale (clastic sedimentary rock)

Shale (or Mudstone/Siltstone)

Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)

Sedimentary rock with quartz veining

Laminated siltstone or mudstone with hydrothermal quartz veins

Quartz Vein in Sedimentary Rock

Silicon Dioxide (SiO2) with host Chert or Limestone

Quartz-veined Sedimentary Rock

Hydrothermally veined Clastic Sedimentary Rock (SiO2 veins in Matrix)

Sandstone or Mudstone

Sedimentary Rock

Weathered Sandstone or Siltstone

Sedimentary Rock

Sandstone or Limestone

Sedimentary Rock

Weathered brown pebble, possibly basalt or iron-rich chert

Provisional identification: fine-grained basalt (plagioclase–pyroxene), potentially coated by iron oxides; exact identification requires testing

Shale or Slaty Mudstone

Argillaceous sedimentary rock

Weathered sandstone fragment

Quartz-rich sandstone, likely arkose or lithic sandstone

Shale / Mudstone

Laminated Mudrock (Siliciclastic Sedimentary Rock)

Fossilized Shell Impression / Siltstone Fossil

Bivalvia / Brachiopoda mold in Siltstone

Shale

Laminated Mudstone (Shale)

Conglomerate (Puddingstone)

Conglomerate (specifically, clastic sedimentary rock)

Shale

Argillaceous sedimentary rock

Sandstone

Clastic Sedimentary Rock

Shale

Lutaceous sedimentary rock

Coal

Carbonaceous sedimentary rock

Conglomerate

Conglomerate (Sedimentary rock)