Sedimentary (Man Made Conglomerate)

Mudstone

Argillite / Siliciclastic sedimentary rock

Sandstone (Water-worn pebble)

Arenite (primarily SiO2)

Shale

Argillite / Shaly Mudstone

Rose Quartz (likely carved)

Rose Quartz (SiO2)

Rose Quartz Carving

Quartum roseum (Variety of Quartz, SiO2)

Shale or Slaty Mudstone

Argillaceous sedimentary rock

Cone-in-cone structure (Limestone)

Cone-in-cone structure (Secondary Sedimentary Structure)

Shale (Ferruginous)

Laminated Mudrock (Siliciclastic Sedimentary Rock)

Weathered iron-rich sandstone or ferruginous siltstone

Clastic sedimentary rock, likely quartz-rich sandstone cemented by iron oxides (Fe₂O₃/Fe₃O₄)

Sandstone pebble

Sandstone (mainly Quartz, SiO2)

Sandstone

Arenite

Sandstone

Arenite

Shale with Iron Staining

Fissile Mudrock (Sedimentary Rock)

Rounded brown pebble, likely weathered sandstone or iron-stained quartzite

Probable quartz-rich sandstone (SiO₂-dominated); exact identification requires testing

Shale

Shale (Fine-grained clastic sedimentary rock)

Sandstone

Clastic sedimentary rock (primarily quartz arenite)

Sandstone (Quartz Sandstone)

Arenite (primarily SiO2)

Shale

Shale (Consolidated fine-grained clay/silt)

Chert Breccia

Brecciated Chert (Microcrystalline Silica)

Sandstone

Arenite

Sandstone

Arenite (primarily composed of SiO2)

Sandstone (Ferruginous)

Arenite (Fe-oxide cemented)

Sandstone (Ferruginous)

Clastic Sedimentary Rock (SiO2 with Fe2O3/FeOOH cement)

Fossil Assortment and Geological Specimens

Various (including Ammonoidea)

Lapis Lazuli

A metamorphic rock primarily composed of lazurite (Na,Ca)8[(S,SO4,Cl)2|(Al6Si6O24)], calcite (CaCO3), and pyrite (FeS2).

Shale

Fissile mudstone (rich in clay minerals and quartz)

Banded Sedimentary Rock

Sedimentary rock with Liesegang banding

Fossilized shell fragment

Indeterminate fossil mollusk; likely a silicified or mineral-replaced bivalve/gastropod fragment

Sandstone or Mudstone

Sedimentary Rock

Brown Sandstone

Arenite (primarily Quartz and Feldspar, with Iron Oxide cement)

Pebble (likely Quartz or Chert)

SiO₂ (Silicon Dioxide) - referring to the likely main mineral composition, Quartz. If it's chert, the scientific name remains SiO₂ with a microcrystalline structure.

Sandstone

Arenite

Garnet Beads

Garnet Group (complex nesosilicates, e.g., Almandine Fe3Al2(SiO4)3)

Shale / Mudstone

Laminated Mudrock (Siliciclastic Sedimentary Rock)

Shale (Beach-worn)

Laminated Pelite (primarily clay minerals and quartz)

Sandstone

Arenite

Sandstone (Quartz-rich)

Arenite (SiO2)

Siltstone Pebble with Veining

Siltstone

Sandstone (Ferruginous)

Arenite with Iron-Oxide Cement

Sandstone (Quartzite-rich)

Clastic sedimentary rock (SiO2 primary)

Sandstone

Arenite (SiO2 principal)

Sandstone

Arenite (predominantly SiO2 with iron oxides)