Mineral, Specifically A Rock Fragment

Chert (Jasper/Flint variety)

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO₂)

Quartz (specifically Clear Quartz or Rock Crystal)

Silicon Dioxide (SiO2)

Fossiliferous Limestone (Coquina / Shell Limestone)

Biogenic Limestone (Calcium Carbonate, CaCO3)

Sandstone (Ferruginous)

Arenite (SiO2 with Fe2O3 inclusions)

Ferruginous Sandstone

Arenite with Iron-Oxide cement (primarily Fe2O3 • nH2O)

Conglomerate

Conglomerate (clastic sedimentary rock)

Granite (specifically Pink Granite)

Phaneritic Plutonic Rock (High Potassium Feldspar Granite)

Chondrite Meteorite

Ordinary Chondrite (S-type Asteroid fragment)

Banded Sandstone

Arenite with Liesegang banding

Conglomerate

Conglomerate (Clastic Sedimentary Rock)

Granite

Granite (Phaneritic Acidic Igneous Rock)

Quartz Crystal Fragment

Silicon Dioxide (SiO2)

Tree Agate

Silicon Dioxide (SiO2) with Chlorite inclusions

Iron Meteorite (Campo del Cielo)

Iron Meteorite, Group IAB (FeNi Alloy: Kamacite and Taenite)

Red Sandstone

Arenite (Fe2O3 rich)

Sandstone (with Limonite staining)

Arenite (primarily SiO2 with FeO(OH)·nH2O)

Sandstone (with prominent jointing/fractures)

Arenite (composed primarily of SiO2)

Seashell Fragment (Aragonite/Calcite)

Calcium Carbonate (CaCO3) - Shell fragment

Sandstone (Quartz-rich)

Arenite (composed primarily of SiO2)

Sandstone (likely Arkosic)

Clastic Sedimentary Rock (Sandstone)

Sandstone

Clastic sedimentary rock (primarily SiO2)

Red Jasper with Quartz and Hematite

Silicon Dioxide (SiO2) with Ferric Iron inclusions

Limestone (specifically Dolomitic/Crystalline Limestone)

Sedimentary Carbonate Rock (CaCO3 / CaMg(CO3)2)

Sandstone

Arenite (primarily SiO2)

Sandstone (Red Sandstone)

Clastic Sedimentary Rock (primarily SiO2 with Iron Oxide)

Pink Granite

Phaneritic Felsic Igneous Rock (Granite)

Crushed Limestone Aggregate

Limestone (Calcium Carbonate, CaCO3)

Milky Quartz Pebble

Quartz (Silicon Dioxide - SiO2)

Sandstone

Clastic sedimentary rock (primarily SiO2)

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Stromatolite

Laminated biogenic sedimentary structure (formed by Cyanobacteria)

Conglomerate (River Rock Aggregate)

Conglomerate (Lithic-clast conglomerate)

Sandstone

Arenite (composed primarily of SiO2)

Sandstone

Arenite (SiO2 + various cementing minerals)

Conglomerate

Clastic sedimentary rock (Puddingstone)

Carnelian and White Quartz Bracelet

Silicon Dioxide (SiO2) - specifically Carnelian (Chalcedony) and Rock Crystal/Snow Quartz

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Sandstone (Quartzose Sandstone)

Arenite (SiO2 principal component)

Ocean Jasper

Orbicular Jasper (Silicon Dioxide, SiO2)

Sandstone (Ferruginous)

Arenite with Iron-Oxide Cement (primarily SiO2 with Fe2O3/FeOOH)

Jasper Conglomerate (Puddingstone)

Siliceous Conglomerate (Quartz and Jasper clasts in a fine-grained matrix)