Granite
Granite (Felsic Plutonic Rock)
igneous
Category
Metamorphic Rock (Specifically A Rock Composed Of Minerals)
Browse metamorphic rock (specifically a rock composed of minerals) specimens identified by the Rock Identifier community.
Learn about Metamorphic Rock (Specifically A Rock Composed Of Minerals) in the encyclopedia
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Sandstone (Quartz Sandstone / Iron-stained Sandstone)
Sandstone (SiO2 with iron oxide impurities)
sedimentary
Pink Granite
Granite (Phaneritic Acidic Igneous Rock)
igneous
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals: (Mg, Fe)3Si2O5(OH)4)
metamorphic
Quartzite
Quartzite (composed primarily of SiO2)
metamorphic
Quartzite
Quartzite (composed primarily of SiO2)
metamorphic
Quartzite Pebble
Metamorphic Rock (composed mainly of SiO2)
metamorphic
Quartzite (Yellow/Tan)
Metamorphic Rock composed of Quartz (SiO₂)
metamorphic
Granite
Phaneritic plutonic rock (SiO2-rich)
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Sandstone (Quartzose Sandstone)
Sandstone (SiO2 with various trace minerals)
sedimentary
Schist
Mica Schist
metamorphic
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals: (Mg,Fe)3Si2O5(OH)4)
metamorphic
Fossil Shell
Invertebrate fossil (Mollusca)
fossil
Sandstone (Ferruginous)
Clastic sedimentary rock (SiO2 with Fe2O3)
sedimentary
Fossilized Sand Dollar
Echinoidea (Clypeasteroida)
fossil
Pink Granite
Phaneritic intrusive igneous rock (high Orthoclase Feldspar content)
igneous
Sandstone
Arenite
sedimentary
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals: (Mg, Fe)3Si2O5(OH)4)
metamorphic
Sandstone (with minor weathering/pitting)
Clastic Sedimentary Rock (composed mostly of SiO2)
sedimentary
Lapis Lazuli
Lazurite-rich metamorphic rock ((Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
metamorphic
Quartzite
Quartzite (composed primarily of Silica, SiO2)
metamorphic
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Diorite
Intermediate Intrusive Igneous Rock
igneous
Pink Granite
Phaneritic Felsic Igneous Rock (composed primarily of Orthoclase Feldspar and Quartz)
igneous
Bloodstone
Heliotrope (a variety of Chalcedony, SiO₂ with inclusions)
Metamorphic Rock
Siltstone
Siltstone (composed of microscopic quartz and clay minerals)
sedimentary
Quartzite
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Shale
Fissile Mudstone (primarily composed of phyllosilicate minerals like kaolinite, montmorillonite, and illite)
sedimentary
Sandstone
Sedimentary rock composed mainly of quartz sand
sedimentary
Granite
Granite (composed primarily of Quartz, Feldspar, and Mica)
igneous
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals: (Mg,Fe)3Si2O5(OH)4)
metamorphic
Granite
Granite
igneous
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals, e.g., Antigorite, Lizardite, or Chrysotile)
metamorphic
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
sedimentary
Granite fragment
Granite (Felsic intrusive igneous rock)
igneous
Ironstone Concretion (Coprolite-like)
Goethite/Hematite Siderite Spheroid (FeCO3 or FeO(OH))
sedimentary
Shiva Lingam
Cryptocrystalline Quartz and Iron Oxide
sedimentary
Granite
Granite (Mainly Quartz, Feldspar, and Mica)
igneous
Diorite
Diorite (intermediate intrusive igneous rock)
igneous
Quartz with Mica/Host Rock
Silicon Dioxide (SiO2) with Phyllosilicates
mineral
Pink Granite
Phaneritic Felsic Igneous Rock
igneous