Not A Rock (Animated Character)

Basalt River Cobble

Basalt (Mafic Igneous Rock)

Red Sandstone

Arenite (Fe2O3 enriched)

Black Onyx

Silicon Dioxide (SiO2) - variety of Chalcedony

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Quartzite River Rock

Metamorphic Quartzite (SiO2)

Pyrite

Iron Sulfide (FeS2)

Brown Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Pyrite

Iron Sulfide (FeS2)

Quartz

Silicon Dioxide (SiO2)

Sandstone (Ferruginous)

Arenite (composed primarily of SiO2 with Fe2O3 cement)

Basalt Pebble

Extrusive Aphanitic Basalt

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Ironstone (with possible Hematite/Limonite coating)

Ironstone (Fe-rich sedimentary rock)

Bronzite

MgSiO3 (Enstatite with 10-30% FeSiO3 in solid solution)

Carnelian

Carnelian (SiO2)

Gneiss

Gneiss (pronounced 'nice')

Carnelian Agate

Carnelian (Silicon Dioxide - SiO2)

Rough Amethyst

Silicon Dioxide (SiO2) with Iron impurities

Basalt with Iron Oxidation

Vesicular Basalt (Aphanitic Mafic Igneous Rock)

Shale

Shale (clastic sedimentary rock)

Gold Flakes

Native Gold (Au)

Amethyst

Amethyst (Silicon Dioxide, SiO2)

Dyed Dragon Vein Agate

Silicon Dioxide (SiO2) with artificial pigment

Muscovite on Quartz (Mica host rock)

KAl2(AlSi3O10)(OH)2 (Muscovite) in SiO2 (Quartz)

Carnelian (Orange Chalcedony)

Silicon dioxide (SiO2)

Amazonite

Microcline (variety Amazonite), K(AlSi3O8)

Fossiliferous Shale (with Vertebrate Bones)

Laminated Mudstone containing Fossilized Bone (Apatite)

Carnelian

Carnelian (SiO2)

Feldspar (Orthoclase)

Potassium Feldspar (KAlSi3O8)

Pyrite

Iron Sulfide (FeS2)

Banded Agate

SiO2 (Silicon Dioxide)

Quartzite

Quartzite (SiO2)

Bauxite

Bauxite (Al2O3·nH2O)

Carnelian (Orange Agate/Chalcedony)

Silicon Dioxide (SiO2) - variety of Chalcedony

Sandstone

Arenite (SiO2 based)

Basalt with Quartz Veins

Basalt (composition: SiO2, MgO, FeO, Al2O3, CaO)

Crushed Stone / Gravel (Multiple Rock Types)

Lithic fragments (undifferentiated)

Weathered Volcanic Rock (possibly Rhyolite or Andesite Pebble)

Volcanic rock (e.g., Rhyolite or Andesite, specific identification would require thin section analysis or chemical assay). Mineral composition: Primarily feldspars (orthoclase and/or plagioclase), quartz (in rhyolite), micas, amphiboles, and sometimes pyroxenes.

Jasper

Chalcedony (SiO2)

Quartz-filled Basalt Geode

Amygdaloidal Basalt with Quartz (SiO2)

Limonite Concretion

FeO(OH)·nH2O (Hydrated Iron Oxide)

Citrine

Silicon Dioxide (SiO2)