Metamorphic Rock (Composed Of Multiple Minerals)

Quartz

Quartz (SiO₂)

Shale

Fissile mudrock (composed primarily of clay minerals and quartz)

Quartzite

Quartzite (composed mainly of SiO2)

Jasper (likely Polychrome or Ocean Jasper)

Silicon Dioxide (SiO2) with impurities

Quartz (pebble)

Quartz (SiO₂)

Red Sandstone

Arenite (primarily composed of SiO2 with Fe2O3 cement)

Quartzite

Quartzite (composed primarily of SiO2)

Gneiss (Metamorphic Rock)

Gneiss

Limestone

Sedimentary rock composed of Calcium Carbonate (CaCO3)

Serpentine

Serpentinite (a rock composed primarily of serpentine minerals like antigorite, chrysotile, and lizardite; general formula (Mg, Fe)3Si2O5(OH)4)

Marble

Marble (metamorphosed limestone or dolostone), primarily composed of calcite (CaCO3) or dolomite (CaMg(CO3)2)

Zircon

Zircon (ZrSiO4)

River Siltstone Pebble

Siltstone (primarily composed of silica and clay minerals)

Wishing Stone with Quartz Veins

Quartzite or Quartz-veined Metamorphic Rock (composed mainly of SiO2)

Gneiss

Foliated Metamorphic Rock (Gneiss)

Bauxite

Bauxite (Al(OH)3, AlO(OH))

Red Sandstone

Arenite (primarily Quartz SiO2 with Hematite Fe2O3 cement)

Granite Pebble

Granite

Quartzite Pebble

Metamorphic rock predominantly composed of Quartz (SiO2)

Dalmatian Stone

Dalmatian Stone (a fine-grained igneous rock, often misidentified as Dalmatian Jasper)

Schist

Mica Schist (primarily composed of quartz, feldspar, and mica)

Granodiorite

Granodiorite (Intermediate intrusive igneous rock)

Quartzite (River Pebble)

Quartzite (composed primarily of Silica, SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartzite

Quartzite (primarily composed of SiO O₂)

Quartzite (Milky)

Metamorphic rock predominantly composed of Quartz (SiO2)

Pebble (likely Quartzite or Chert)

Clastic Sediment, potentially composed of SiO₂ (Quartz)

Basalt

Basalt (Aphanitic Mafic Volcanic Rock)

Greenstone (Amygdaloidal Basalt)

Amygdaloidal Basalt (frequently composed of Plagioclase Feldspar, Pyroxene, and Olivine with Chlorite inclusions)

Greenstone (Epidote/Chlorite Rich Rock)

Metabasalt (often contains Epidote Ca2Al2(Fe3+;Al)(SiO4)(Si2O7)O(OH))

Granodiorite

Granodiorite (Quartz-Feldspar-Biotite Plutonic Rock)

Fulgurite

Fulgurite (Lechatelierite), amorphous SiO2

Dalmatian Stone

Dalmatian Jasper (a misnomer) / Perthitic Igneous Rock

Sandstone

Sandstone (clastic sedimentary rock, composed predominantly of sand-sized minerals or rock fragments)

Sandstone

Clastic sedimentary rock (primarily SiO2)

Greenstone (Greenschist facies)

Greenschist (composed primarily of Chlorite, Actinolite, and Epidote)

Botryoidal Chalcedony Geode

Silicon Dioxide (SiO2) - Chalcedony / Cryptocrystalline Quartz

Sandstone

Arenicola (comprising mostly Quartz, SiO2)

Sandstone (Ferruginous)

Arenite (composed primarily of SiO2 with Fe2O3 staining)

Serpentinite

Serpentinite (composed primarily of serpentine minerals like antigorite, chrysotile, and lizardite)

Granite Pebble

Granite (composed primarily of Quartz, Feldspar, and Mica)

Red Quartzite River Stone

Metamorphic Rock (composed mainly of Quartz, SiO2)