Metamorphic Rock (Primarily Composed Of Minerals)

Quartz vein in Schist

Crystalline Silicon Dioxide (SiO2) in Metamorphic Host

Sandstone

Sandstone (composed primarily of sand-sized minerals or rock grains)

Sandstone (with secondary weathering/concretion)

Arenite (composed primarily of Quartz, SiO2)

Bumblebee Jasper (technically Bumblebee Stone)

Calcite, Aragonite, and Realgar/Orpiment mixture (SiO2 + CaCO3 + As2S3/As2S2)

Serpentinite

Serpentinite (composed primarily of serpentine-group minerals like antigorite, chrysotile, and lizardite; chemical formula varies but generally Mg3Si2O5(OH)4)

Sandstone (specifically Flagstone)

Arenite (primarily composed of SiO2)

Greenstone (Epidosite)

Epidosite (Metamorphosed Basalt/Diabase)

Serpentinite

Serpentinite (composed largely of Serpentine minerals such as Lizardite, Antigorite, and Chrysotile: Mg3Si2O5(OH)4)

Sandstone (with carbonaceous plant fragments)

Arenite (composed primarily of SiO2)

Sandstone (with prominent jointing/fractures)

Arenite (composed primarily of SiO2)

Sandstone (River Stone)

Arenite (composed primarily of SiO2)

Sandstone (Quartzose)

Arenite (primarily SiO2)

Sandstone

Arenite (primarily SiO2)

Quartz with Mica/Host Rock

Silicon Dioxide (SiO2) with Phyllosilicates

Sandstone (Ferruginous)

Arenite (with Iron Oxide cement)

Greenschist

Greenschist (chlorite-epidote schist)

Sandstone

Arenite (composed primarily of SiO2)

Sandstone Pebble

Arenite (primarily SiO2)

Sandstone (Flagstone)

Arenite (composed primarily of SiO2)

Sandstone (Ferruginous)

Arenite (with Iron Oxide)

Sandstone (with Feldspathic/Arkose qualities)

Arenite (primarily SiO2 with KAlSi3O8 components)

Ruby in Zoisite with Hornblende

Anyolite (Ruby: Al2O3, Zoisite: Ca2Al3(SiO4)3(OH))

Gneiss

Gneiss (High-grade regional metamorphic rock)

Sandstone

Arenite (primarily SiO2)

Lapis Lazuli

Lapis Lazuli (a rock composed primarily of Lazurite (Na,Ca)₈[(S,Cl,SO₄,OH)₂|(Al₆Si₆O₂₄)], with varying amounts of Calcite, Pyrite, and Sodalite.)

Sandstone

Arenite (primarily SiO2)

Gneiss (Metamorphic Rock)

Gneiss (high-grade regional metamorphic rock)

Granite

Phaneritic Plutonic Igneous Rock (primarily composed of quartz, alkali feldspar, and plagioclase)

Anyolite (Ruby in Zoisite)

Zoisite with inclusions of Hornblende and Ruby (Ca2Al3(SiO4)3(OH))

Dalmation Jasper (Dalmation Stone)

Perthitic feldspar-quartz-amphibole rock

Greenschist (containing Epidote and Quartz)

Greenschist (Epidote-Chlorite-Actinolite Schist)

Gneiss (Metamorphic Rock)

Gneiss

Greenschist (Greenstone)

Chlorite Schist / Greenschist Facies Rock

Gneiss

Gneissic Metamorphic Rock

Greenstone / Epidosite

Metamorphosed Mafic Igneous Rock (Epidote-Chlorite group)

Banded Gneiss

Gneiss (Metamorphic Rock)

Sandstone

Arenite (composed primarily of SiO2)

Sandstone

Arenite (composed primarily of SiO2)

Sandstone

Arenite (composed primarily of SiO2)

Sandstone

Arenite (composed primarily of SiO2)

Sandstone

Arenite (composed primarily of SiO2)

Granite

Felsic Intrusive Igneous Rock