Metamorphic Rock (Primarily Composed Of Minerals)

Sandstone

Arenite (composed primarily of SiO2)

Sandstone (with Iron Staining)

Arenite (composed primarily of SiO2 with Fe2O3 staining)

Likely amphibolite (hornblende-rich metamorphic rock)

Amphibolite, composed chiefly of amphibole (commonly hornblende) and plagioclase feldspar

Quartzite

Quartzite (composed primarily of SiO2)

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals such as Antigorite, Lizardite, and Chrysotile)

Serpentine (polished/tumbled)

Serpentine-group minerals, chiefly antigorite, Mg₃Si₂O₅(OH)₄

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals like Antigorite, Lizardite, and Chrysotile)

Eclogite

Eclogite (composed primarily of Omphacite and Garnet)

Bauxite

AlOx(OH)3-2x (mixture of Gibbsite, Boehmite, and Diaspore)

Basalt

Extrusive Igneous Rock

Red Sandstone

Clastic sedimentary rock (often dominated by SiO2 with Fe2O3)

Granite (Fine-grained)

Phaneritic Felsic Igneous Rock

Sandstone (specifically Lithic or Quartz Arenite)

Arenite (composed primarily of SiO2)

Granite

Intrusive Igneous Rock

Granite

Phaneritic plutonic rock (SiO2-rich)

Quartzite Cobble

Quartzite (composed primarily of SiO2)

Bauxite

Bauxite (principal ore of aluminum, primarily Al(OH)3)

Sandstone (Micaceous)

Arenite (composed primarily of SiO2)

Dalmatian Jasper

Peralkaline Quartz-Feldspar Rock with Arfvedsonite

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals like Antigorite, Lizardite, and Chrysotile)

Unakite

Epidotized Granite

Limestone (fossiliferous or weathered)

Sedimentary carbonate rock primarily composed of calcium carbonate (CaCO3)

Quartzite

Quartzite (composed primarily of SiO2)

Dark, coarse-grained rock fragment (possibly amphibolite or gabbro)

Uncertain from the photo; likely amphibolite (hornblende-rich metamorphic rock) or a mafic igneous rock such as gabbro

Likely amphibolite

Amphibolite, composed mainly of hornblende and plagioclase feldspar

Lapis Lazuli (polished cabochon)

Lazurite-rich metamorphic rock (approx. Na6Ca2Al6Si6O24(SO4,S,Cl)2)

Lapis Lazuli

Sodium aluminum silicate with sulfur (main component: Lazurite [(Na,Ca)8(AlSiO4)6(SO4,S,Cl)2])

Granite Pebble

Granite

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals like Antigorite, Lizardite, and Chrysotile)

Red Sandstone

Arenite (primarily Quartz with Hematite cement)

Quartzite

Quartzite (composed primarily of SiO2)

Dark foliated metamorphic rock, likely amphibolite

Amphibolite, typically composed mainly of hornblende and plagioclase feldspar

Greenstone pebble (likely serpentinite)

Serpentinite, composed mainly of serpentine-group minerals

Dyed Dalmatian Stone

Aplite (Alkali-feldspar granite) with Arfvedsonite

Granite

Granite (Phaneritic intrusive igneous rock)

Weathered Sandstone or Siltstone

Sedimentary Rock

Unakite

Altered Granite (Granitic Metamorphic Rock)

Diorite (Spotted or Dalmatian Stone effect)

Diorite (Intermediate Plutonic Rock)

Dalmatian Stone

Dalmatian Jasper (Aplitic Perthite)

Sandstone

Arenite (composed primarily of SiO2)

Sandstone

Arenite (primarily SiO2)

Quartzite

Quartzite (composed primarily of Silica, SiO2)