Granite
Felsic intrusive igneous rock
igneous
Category
Metamorphic Rock (For Nephrite And Some Jadeite); Mineral (For Jadeite)
Browse metamorphic rock (for nephrite and some jadeite); mineral (for jadeite) specimens identified by the Rock Identifier community.
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Sandstone
Arenite (SiO2 principal)
sedimentary
Geode (Quartz)
Silicon Dioxide (SiO2)
mineral
Sandstone (Arkose/Quartzose)
Arenite (SiO2 based clastic rock)
sedimentary
Quartz
Quartz (SiO₂ - Silicon Dioxide)
mineral
Basalt
Basalt (Mafic volcanic rock)
igneous
Green Slate or Metamorphic Rock with Moss/Lichen
Metamorphic rock / Phyllite or Slate variant
metamorphic
Bornite
Cu5FeS4 (Copper Iron Sulfide)
mineral
Rough Apatite in Matrix
Fluorapatite / Chlorapatite / Hydroxylapatite (Ca5(PO4)3(F,Cl,OH))
mineral
Gneiss
Metamorphic Gneiss (High-grade regional metamorphism)
metamorphic
Sandstone
Arenite
sedimentary
Schist
Schist (Foliated Metamorphic Rock)
metamorphic
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Garnet (likely Almandine or Pyrope)
Garnet Group (e.g., Almandine: Fe3Al2(SiO4)3; Pyrope: Mg3Al2(SiO4)3)
Mineral
Sapphire
Corundum (Al2O3)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Slate
Slate (Regional metamorphic rock composed primarily of quartz, illite, and chlorite)
metamorphic
Black Limestone
Bituminous Limestone (Calcium Carbonate - CaCO3)
sedimentary
Gabbro (likely with Pyrite/Sulfide mineralization)
Mafic Intrusive Igneous Rock
igneous
Sandstone Concretion
Sandstone (Sedimentary rock, mostly SiO2)
sedimentary
Gneiss
Gneiss
metamorphic
Mica Schist
Mica Schist (KAl2(AlSi3O10)(OH)2)
metamorphic
Quartzite
Metamorphic rock primarily composed of Quartz (SiO2)
metamorphic
Almandine Garnet
Almandine - Fe3Al2(SiO4)3
mineral
Granite
Intrusive Igneous Rock (Felsic)
igneous
Biotite Mica Schist
Metamorphic Rock containing Biotite K(Mg,Fe)3AlSi3O10(OH)2
metamorphic
Clear Quartz
Silicon dioxide (SiO2)
mineral
Quartz Veined Mudstone
Metasedimentary rock with Quartz (SiO2) veins
metamorphic
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
mineral
Quartz (Crystal/Druzy Quartz)
Quartz (SiO₂)
Mineral
Garnet (likely Almandine)
Almandine (Fe3Al2(SiO4)3)
mineral
Rough White Zircon
Zircon (Zirconium Silicate, ZrSiO4)
mineral
Granite
Phaneritic plutonic rock (Silica-rich)
igneous
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Sandstone Concretion
Ferruginous Sandstone Concretion (SiO2 + FeO(OH))
sedimentary
Ruby
Corundum (Aluminum Oxide with Chromium), Al2O3:Cr
mineral
Fossiliferous Limestone (Coquina)
Calcite (CaCO3) with Bioclastic inclusions
sedimentary
Quartz (Field Stone)
Silicon Dioxide (SiO2)
mineral
Anthracite Coal
Anthracite (Carbon Content: 86%-97%)
metamorphic
Green Tourmaline
Elbaite (Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)4)
mineral