Metamorphic Rock (Composed Of Multiple Minerals)

Sandstone

Arenite (primarily composed of SiO2 - Silicon Dioxide)

Anyolite (Ruby in Zoisite)

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

Sandstone

Arenite (composed primarily of SiO2)

Red Sandstone (Old Red Sandstone)

Ferruginous Sandstone (SiO2 + Fe2O3)

Garnet-Bearing Schist

Almandine Garnet Micaceous Schist

Sandstone (Quartzose)

Arenite (primarily SiO2)

Unakite

Unakite (altered granitic rock)

Moonstone

Adularia or Orthoclase (KAlSi3O8) or Albite (NaAlSi3O8), specifically with lamellar exsolution of albite and orthoclase.

Sandstone

Arenite

Sandstone

Arenite (SiO2 based with primary clasts 0.0625 to 2 mm)

Blue Quartz (Aventurine)

Silicon Dioxide (SiO2) with inclusions of crocidolite or dumortierite

Conglomerate

Conglomerate (a clastic sedimentary rock)

Shale

Fissile Mudstone (primarily composed of clay minerals and quartz grains)

Limonite (Iron Ore)

Limonite (Hydrated Iron Oxide, FeO(OH)·nH2O)

Banded Gneiss with Quartz Vein

Foliated Metamorphic Rock (Gneiss)

Gneiss

Gneiss (High-grade metamorphic rock)

Bumblebee Jasper (technically Bumblebee Stone)

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

Sandstone (with potential iron-oxide staining)

Arenite (primarily SiO2)

Gneiss

Gneiss (High-grade metamorphic rock)

Greenschist (Greenstone)

Greenschist (Metamorphic rock containing chlorite, actinolite, and epidote)

Slate

Slate (Foliated metamorphic rock)

Basalt

Basalt

Sandstone

Arenite (SiO2 based)

Mica Schist

Mica Schist

Sandstone

Arenite (composed primarily of SiO2)

Sandstone

Arenite (composed primarily of SiO2)

Sandstone

Arenite (primarily SiO2)

Quartz Vein / Milky Quartz

Silicon Dioxide (SiO2)

Sandstone (Quartzose)

Arenite (primarily SiO2)

Gneiss

High-grade Metamorphic Gneiss

Sandstone

Arenite (composed mainly of SiO2)

Sandstone (Red Sandstone / River Stone)

Arenite (composed primarily of Quartz, SiO2, with Iron Oxide cementation)

Sandstone (likely Quartzose Sandstone)

Arenite (primarily SiO2)

Schist (Biotite Schist)

Biotite-bearing Schist (K(Mg,Fe)3AlSi3O10(F,OH)2)

Garnet Schist

Almandine Garnet in Mica Schist (Fe3Al2(SiO4)3)

Sandstone

Arenite (composed primarily of SiO2)

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

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

Sandstone

Arenite (primarily SiO2)

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals: (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4)

Yellow Agate

Silicon Dioxide (SiO2)

Sandstone

Arenite (primarily SiO2)

Gneiss (specifically a weathered or stream-worn specimen)

Gneiss (Foliated Metamorphic Rock)