Minerals

Malachite

Copper carbonate hydroxide, Cu2CO3(OH)2

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Olivine (Peridot)

Olivine (Magnesium Iron Silicate, (Mg,Fe)2SiO4)

Granitic Pegmatite (with Pink Feldspar and Quartz)

Pegmatite (KAlSi3O8 + SiO2)

Granite

Granite (Phaneritic intrusive igneous rock)

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Ferruginous Sandstone

Sandstone (rich in iron oxides/hydroxides)

Granodiorite

Granodiorite (containing Quartz, Plagioclase, Orthoclase, Biotite/Hornblende)

Amygdaloidal Basalt

Vesicular Basalt with secondary mineral infilling (commonly Zeolite, Calcite, or Quartz)

Dragon Stone

Ohko Stone (Argillaceous sedimentary rock)

Septarian Nodule

Septarian Concretion (Composition: Calcite, Aragonite, and Limestone/Clay)

Granite (Fine-grained)

Phaneritic Felsic Igneous Rock

Gabbro

Phaneritic Mafic Igneous Rock

Granite

Granite (Felsic Plutonic Rock)

Quartz

Silicon Dioxide (SiO2)

Yellow Calcite

Calcium Carbonate (CaCO3)

Garnet in Matrix (likely Almandine in Quartz/Mica Schist)

Almandine Garnet (Fe3Al2(SiO4)3) in Quartz-Feldspar host rock

Fossil Shark Tooth (Sand Tiger Shark type)

Carcharias sp. (likely Odontaspis)

Petrified Wood

Silicified Wood (primarily SiO2)

Bloodstone (Heliotrope)

Silicon Dioxide (SiO2) with inclusions of Iron Oxide/Chlorite

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Chert (Flint)

Microcrystalline Quartz (SiO2)

Red Quartzite

Quartzite (Silicon Dioxide, SiO2)

Petrified Wood

Silicified Wood (primarily SiO2)

Greywacke (Sandstone)

Lithic wacke

Dalmatian Stone

Dalmatian Jasper (Aplitic Perthite)

Marble

Metamorphic rock primarily composed of Calcite (CaCO3)

Turquoise

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

Conglomerate

Clastic Sedimentary Rock (Conglomerate)

Chert (Jasper/Agate variety)

Silicon Dioxide (SiO2)

Picture Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Ironstone concretion / Limonitic Sandstone

Goethite/Hematite Cemented Sandstone (Hydrated Iron Oxide)

Iron-stained Quartzite / Chert

Silicon Dioxide (SiO2) with Hematite/Limonite impurities

Milky Quartz

Silicon Dioxide (SiO2)

Sandstone with Desert Varnish

Arenite (SiO2 predominantly) with Ferromanganese coating

Petrified Wood

Silicified Wood (primarily SiO2)

Rough Green Sapphire (Corundum)

Corundum (Al2O3 - Aluminum Oxide with trace elements)

Fossilized Brachiopod

Phylum Brachiopoda (replaced by Calcite/CaCO3)

Quartz (Milky/Iron-stained)

Silicon Dioxide (SiO2)

Petrified Wood

Silicified wood (primarily Silicon Dioxide, SiO2)

Quartz

Silicon Dioxide (SiO2)

Petrified Wood

Silicified Wood (SiO2)