Schist
Mica Schist
metamorphic
Category
Metamorphic Or Igneous
Browse metamorphic or igneous specimens identified by the Rock Identifier community.
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Quartzite (River Pebble)
Recrystallized Quartz (SiO2)
metamorphic
Glaucophane Schist (Blueschist)
Blueschist (Glaucophane-bearing schist)
metamorphic
Blue Quartzite
Quartzite (primarily SiO2 with inclusions like Dumortierite or Magnesio-riebeckite)
metamorphic
Grey Slate
Foliated Metamorphic Rock (formed by low-grade regional metamorphism of shale or mudstone)
metamorphic
Quartzite
Quartzite (chiefly SiO2)
metamorphic
Schist
Mica Schist
metamorphic
Quartz Vein in Schist
Quartz (SiO2) in Mica Schist
metamorphic
Kyanite in Quartz
Kyanite (Al2SiO5) with Quartz (SiO2)
metamorphic
Blue Quartzite
Quartzite (silicon dioxide, SiO2)
metamorphic
Pink Marble
Recrystallized Limestone (Calcium Carbonate, CaCO3)
metamorphic
Anthracite Coal
Anthracite (Carbon Content: 86%-97%)
metamorphic
Schist
Mica Schist (Medium-grade Metamorphic Rock)
Metamorphic
Tiger's Iron
Pseudomorphic Quartz Aggregate (contains SiO2 with Fe2O3 and FeOOH)
metamorphic
Diorite (Dalmatian Stone)
Phaneritic Plutonic Diorite
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Granite
Granite (Mainly Quartz, Feldspar, and Mica)
igneous
Gold-bearing Quartz
Quartz (SiO2) with associated pyrite or native gold
mineral
Quartzite pebble
Quartzite (SiO2)
metamorphic
Mica-rich Sandstone or Micaceous Schist Weathering
Micaceous Schist (Muscovite-Quartz composition)
Metamorphic or Sedimentary depending on local grade
Quartzite (with Iron Staining)
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Quartz (Crystal Fragment)
Quartz / Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartzite
Quartzite (chiefly SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Milky Quartz with Chlorite Schist Inclusions
Quartz (SiO2) with Chlorite Group silicates (typically (Mg,Fe)3(Si,Al)4O10(OH)2)
metamorphic
Kyanite in Quartz
Al2SiO5 in SiO2
metamorphic
Calcite
Calcium Carbonate (CaCO3)
mineral
Aquamarine
Beryl (Be3Al2Si6O18)
gemstone
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Unakite
Epidotized Granite
metamorphic
Specular Hematite with Quartz and Limonite
Hematite (Fe2O3) with Quartz (SiO2) and Limonite (FeO(OH)·nH2O)
Mineral
Polished Rhodonite Obelisk
Rhodonite (Manganese Iron Magnesium Calcium Silicate) - (Mn,Fe,Mg,Ca)SiO3
metamorphic
Aventurine
Silicon Dioxide (SiO2 with inclusions of Fuchsite mica)
mineral
Peacock Ore
Bornite (Cu5FeS4) or Chalcopyrite (CuFeS2) with iridescent tarnish
mineral
Banded Agate (Gray/Brown)
Silicon Dioxide (SiO2)
mineral
Green Aventurine
Aventurine Quartz (SiO2 with inclusions)
mineral
White Moonstone (Scolicite or White Feldspar var. )
Lattice-structure Silicate (KAlSi3O8)
mineral
Aventurine Quartz
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Amazonite
Microcline (KAlSi3O8) with lead impurities
mineral
Unakite
Epidotized Granite (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic