Granite
Phaneritic intrusive igneous rock
igneous
Category
Metamorphic Rock (Composed Of Multiple Minerals)
Browse metamorphic rock (composed of multiple minerals) specimens identified by the Rock Identifier community.
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Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Granite
Phaneritic Felsic Igneous Rock
igneous
Bauxite
Bauxite (Al(OH)3 mixed with Fe2O3 and clay minerals)
sedimentary
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Greenstone / Greenschist
Greenschist (composed primarily of Chlorite, Epidote, and Actinolite)
metamorphic
Diorite (Spotted or Dalmatian Stone effect)
Diorite (Intermediate Plutonic Rock)
igneous
Leopard Skin Jasper
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Banded Quartzite or Gneissic Pebble
Quartzite with mafic inclusions (SiO2) or Banded Gneiss
metamorphic
Red Sandstone (Iron-Rich)
Arenite (Fe2O3)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Granite
Felsic intrusive igneous rock
igneous
Banded Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Dalmatian Stone
Dalmatian Stone (formerly called Dalmatian Jasper)
igneous
Quartzite
Quartzite (composed mainly of SiO2)
metamorphic
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
sedimentary
Basalt
Extrusive mafic igneous rock; primarily (Ca,Na)(Mg,Fe,Al,Si)2O6 with (Ca,Na)(Al,Si)4O8
igneous
Gneiss (likely)
Gneiss
Metamorphic
Unidentifiable Rock Fragment
Uncertain
Serpentine
Serpentinite (composed mainly of Group Minerals Antigorite, Chrysotile, and Lizardite; Mg3Si2O5(OH)4)
metamorphic
Serpentinite
Serpentinite (composed largely of Serpentine group minerals like Antigorite, Lizardite, and Chrysotile: Mg3Si2O5(OH)4)
metamorphic
Shale
Fissile mudrock (composed primarily of clay minerals and quartz)
sedimentary
Yellow Quartzite (Onyx Pebble)
Silicon Dioxide (SiO2) - Quartzite
metamorphic
Soapstone
Steatite (primarily composed of Talc, Mg₃Si₄O₁₀(OH)₂)
Metamorphic Rock
Granite / Gneiss Ballast Rock
Granite (Quartzo-feldspathic rock)
igneous
Sandstone (with minor weathering/pitting)
Clastic Sedimentary Rock (composed mostly of SiO2)
sedimentary
Quartz-rich metamorphic fragment (likely mica schist)
Mica schist, probably muscovite–quartz schist
metamorphic
Diorite with Quartz Veins
Diorite
igneous
Quartzite
Metamorphic rock predominantly composed of Quartz (SiO2)
metamorphic
Ferruginous Sandstone (Gritstone)
Arenite with Iron-Oxide Cement (SiO2 with Fe2O3 and FeO(OH))
sedimentary
Shale or Argillite
Shale (fine-grained clastic sedimentary rock) or Argillite (low-grade metamorphic rock derived from shale)
Sedimentary or Metamorphic (low grade)
Quartzite
Metamorphic rock predominantly composed of Quartz (SiO2)
metamorphic
Granite
Felsic intrusive igneous rock
igneous
Pebble
Clast (specifically a granule or small pebble)
Sedimentary
Sandstone (Quartzose Sandstone)
Sandstone (SiO2 with various trace minerals)
sedimentary
Granite
Granite (Plutonic Igneous Rock)
igneous
Diorite
Diorite (intermediate intrusive igneous rock)
igneous
Granite
Granite
igneous
Schist
Schist
metamorphic
Quartzite pebble
Quartzite (SiO2)
metamorphic
Granite
Granite (composed primarily of Quartz, Feldspar, and Mica/Amphibole)
igneous
Sandstone
Arenite (SiO2 + various cementing minerals)
sedimentary