Quartzite River Rock
Metamorphic Quartzite (primarily SiO2)
metamorphic
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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Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Turquoise
Hydrous phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Goethite (Iron Ore)
Goethite (FeO(OH))
mineral
Banded Quartzite with Epidote and Iron Oxides
Metasedimentary Quartzite (SiO2) with inclusions
metamorphic
Quartz (likely tumbled or naturally water-worn)
Quartz (SiO₂ - Silicon Dioxide)
Mineral
Biotite (Black Mica) in Host Rock
K(Mg,Fe)3AlSi3O10(OH,F)2
mineral
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Petrified Wood
Silicified Wood (primarily SiO2)
sedimentary
Basalt with Iron Oxidation
Vesicular Basalt (Aphanitic Mafic Igneous Rock)
igneous
Ironstone Concretion (Moqui Marble Type)
Goethite/Hematite-cemented Sandstone Concretion
sedimentary
Basalt with Quartz Veins
Aphanitic Mafic Igneous Rock (primarily Plagioclase and Pyroxene) with SiO2 inclusions
igneous
Chert (Gray Chalcedony)
Microcrystalline Quartz (SiO2)
sedimentary
Ruby in Fuchsite (often confused with Ruby in Zoisite)
Corundum (Al2O3) in Chromium-rich Muscovite (KAl2(AlSi3O10)(OH)2)
metamorphic
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Muscovite Mica
Muscovite - KAl2(AlSi3O10)(OH)2
mineral
Drill Core Samples (Varied Lithology)
Multi-lithological core samples (containing potential granite, marble, and phyllite/schist sequence)
igneous, sedimentary, and metamorphic
Chrysocolla and Malachite Beads
Hydrated copper silicates (Chrysocolla) and Copper carbonate hydroxide (Malachite)
mineral
Himalayan Pink Salt
Halite (NaCl) with trace minerals
mineral
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral
Schist
Mica Schist (primarily Muscovite and Quartz)
metamorphic
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Vesicular Basalt
Basalt with secondary mineral infilling (Amygdaloidal Basalt)
igneous
Conglomerate (River Rock)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Pyrite in Matrix (Gold-colored Chalcopyrite or Pyrite)
Iron Sulfide (FeS2) / Copper Iron Sulfide (CuFeS2)
mineral
Pink Granite
Phaneritic plutonic rock (dominated by Alkali Feldspar)
igneous
Schist
Mica Schist
metamorphic
Serpentine
Antigorite, Lizardite, or Chrysotile (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4
metamorphic
Schist
Mica Schist (Medium-grade Metamorphic Rock)
Metamorphic
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Turquoise
Turquoise (Hydrated phosphate of copper and aluminium), CuAl6(PO4)4(OH)8·4H2O
mineral
Quartz crystal with Pyrite inclusions
Silicon Dioxide (SiO2) with Iron Sulfide (FeS2)
mineral
Pink Granite (Potassium-rich Granite)
Phaneritic Felsic Igneous Rock (primarily SiO2, Al2O3, K2O)
Igneous
Green Aventurine
Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Pink Granite River Pebble
Phaneritic Felsic Igneous Rock (Granite)
igneous
Red Sandstone
Arenite (with Iron Oxide / Hematite cementation)
sedimentary
Jade (Nephrite or Jadeite)
Nephrite: Ca2(Mg,Fe)5Si8O22(OH)2; Jadeite: NaAlSi2O6
metamorphic
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Dalmatian Jasper (Dalmatian Stone)
Perthitic feldspar with Arfvedsonite inclusions
igneous
Magnetic Sand Grain / Magnetite Pellet
Magnetite (Fe3O4)
mineral
Quartz Geode Fragment
Silicon Dioxide (SiO2)
mineral
Blue Apatite
Apatite-(CaF), Ca5(PO4)3F (Calcium Fluorophosphate)
mineral