Granite (Pink/Red Granite)
Phaneritic Felsic Igneous Rock
igneous
Category
Metamorphic Rock (Primarily Composed Of Minerals)
Browse metamorphic rock (primarily composed of minerals) specimens identified by the Rock Identifier community.
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Sandstone
Sandstone (Silicon dioxide, SiO2 based)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Mica Schist
Mica Schist (primarily Muscovite or Biotite sheet silicates)
metamorphic
Slate
Slate, a fine-grained metamorphic rock composed mainly of mica-group minerals and quartz
metamorphic
Greenschist
Greenschist (composed primarily of Chlorite, Actinolite, and Epidote)
metamorphic
Granite Pebble
Granite (composed primarily of Quartz, Feldspar, and Mica)
igneous
Gneiss
Metamorphic Gneiss
metamorphic
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Weathered gneiss
Banded gneiss, commonly composed of quartz, feldspar, and mica
metamorphic
Marble
Recrystallized Calcite (CaCO3)
metamorphic
Marble
Metamorphosed Limestone (principally CaCO3)
metamorphic
Serpentinite
Serpentinite (composed primarily of serpentine group minerals like lizardite, chrysotile, or antigorite; Mg3Si2O5(OH)4)
metamorphic
Likely blue-gray slate
Slate, a fine-grained rock composed mainly of mica-group minerals and quartz
metamorphic
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
metamorphic
Argillite / Mudstone
Argillaceous sedimentary rock
sedimentary
Red Sandstone
Arenite (composed primarily of Quartz and Iron Oxide)
sedimentary
River Stone / Pebble
Clastic Sediment (composed largely of Quartz, Feldspar, and various rock fragments)
Mineral, Sediment
Sandstone
Sandstone (SiO2 dominant)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Sandstone (Red/Brown)
Arenite (composed primarily of SiO2)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Black slate
Slate, a fine-grained metamorphic rock composed mainly of mica-group minerals, chlorite, and quartz
metamorphic
Sandstone
Arenite
sedimentary
Shale
Fissile Mudstone (primarily composed of clay minerals and quartz)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Granite
Intrusive Igneous Rock
igneous
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Ironstone Concretion (Limonite/Goethite)
Ironstone (composed primarily of Goethite FeO(OH) and Limonite)
sedimentary
Granite
Intrusive Igneous Rock
igneous
Granite
Phaneritic Plutonic Igneous Rock
igneous
Banded Gneiss
Gneiss (high-grade metamorphic silicate rock)
metamorphic
Sandstone (Iron-stained)
Arenite (primarily Quartz, SiO2)
sedimentary
Siltstone River Rock
Siltstone (composed of silt-sized particles, silicate minerals)
sedimentary
Dalmatian Jasper
Microcrystalline Quartz with Arfvedsonite and Tourmaline inclusions
igneous
Biotite-bearing gneiss (probable)
Foliated metamorphic rock composed chiefly of quartz, feldspar, and dark biotite/amphibole
metamorphic
Nuummite
Nuummite (Orthoamphibole rock composed of Anthophyllite and Gedrite)
metamorphic
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Slate
Foliated Metamorphic Rock (composed primarily of Quartz, Muscovite, and Illite)
metamorphic
Granodiorite
Granodiorite (Quartz-Feldspar-Biotite Plutonic Rock)
igneous
Granite
Intrusive Igneous Rock
igneous
Sandstone (Ferruginous)
Arenite (composed primarily of SiO2 with Fe2O3 staining)
sedimentary