Sedimentary Rock (Possibly Composed Of Various Minerals)

Jasper

Microcrystalline Quartz (SiO2)

Quartz Vein Rock

Silicon Dioxide (SiO2)

Bauxite

Bauxite (Al(OH)3, γ-AlO(OH), and α-AlO(OH))

Red Sandstone

Arenite (Fe2O3-rich)

Bauxite

Bauxite (Al2O3·2H2O)

Quartz

Silicon Dioxide (SiO2)

Turquoise

Turquoise (Hydrated phosphate of copper and aluminium) CuAl6(PO4)4(OH)8·4H2O

Yellow Chalcedony

Silicon Dioxide (SiO2)

Sandstone

Arenite

Brecciated Jasper

Silicon dioxide (SiO2) microcrystalline quartz breccia

Chert Nodule

Microcrystalline Quartz (SiO2)

Weathered quartz-rich rock, possibly granite or gneiss fragment

Likely granitic rock composed mainly of quartz, feldspar, and minor mica/iron oxides

Sandstone

Arenite (composed primarily of SiO2)

Fossil Shell

Invertebrate fossil (Mollusca)

Small dark mineral fragment, possibly mica or a metallic sulfide

Unidentified from image; possible biotite mica or iron sulfide (pyrite-group)

Sandstone

Clastic Sedimentary Rock

Sandstone

Arenite (Clastic Sedimentary Rock)

Common Opal

Hydrated amorphous silica (SiO2·nH2O)

Likely quartz-bearing rock fragment

Quartz (SiO₂), possibly with iron-oxide staining or other mineral inclusions

Blue sodalite-bearing rock, possibly lapis lazuli

Sodalite (Na₈Al₆Si₆O₂₄Cl₂), likely in a feldspathoid-rich aggregate

Quartzite

Quartzite (composed primarily of SiO2)

Likely biotite-rich schist

Mica schist, composed chiefly of quartz and biotite mica

Shale

Fissile Mudstone (primarily composed of phyllosilicate minerals like kaolinite, montmorillonite, and illite)

Ammonite Fossil in Matrix

Ammonoidea subclass (e.g., Arietites or similar genera)

Mixed Mineral and Crystal Assortment

Various silicate and oxide minerals

Chert

Microcrystalline or cryptocrystalline quartz

Sandstone

Clastic Sedimentary Rock

Fossil Assortment and Geological Specimens

Various (including Ammonoidea)

Fossilized Shark Tooth

Carcharocles sp. or Striatolamia sp. (Phosphate/Carbonate mineralized Hydroxyapatite)

Chert (Flint)

Microcrystalline Quartz (SiO2)

Fancy Jasper

Silicon Dioxide (SiO2) with impurities

Weathered Sandstone or Siltstone

Sedimentary Rock

Coal

Bituminous Coal / Carbonaceous Rock

Calcite (Yellow/Orange variety - sometimes called Honey Calcite)

Calcite

Quartz (Milky Quartz)

Quartz (Silicon Dioxide, SiO2)

Vesicular basalt (possibly amygdaloidal basalt)

Basalt, a mafic volcanic rock composed mainly of plagioclase feldspar, pyroxene, and commonly olivine; cavities may contain secondary zeolites, calcite, or quartz.

Possible basalt or iron-rich concretion

Basaltic rock, likely composed mainly of plagioclase and pyroxene; exact identification requires testing

Ferruginous Sandstone

Sandstone with Iron Oxide (Limonite/Goethite)

Conglomerate (Greenstone/Pebble Conglomerate)

Polymictic Conglomerate

Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Fossilized bivalve shell

Bivalvia indeterminate; likely a preserved clam or cockle shell, composed mainly of calcium carbonate (CaCO₃)