Note on Image Identification: Textile
N/A (Anthropogenic material)
not a rock
Category
Mineral Side Rock
Browse mineral side rock specimens identified by the Rock Identifier community.
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Schist
Mica Schist
metamorphic
Dyed Agate
Chalcedony (Silicon Dioxide, SiO2)
mineral
Lapis Lazuli
Lazurite-rich metamorphic rock ((Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
metamorphic
Brecciated Limestone or Marble Pebble
Breccia / Calcite (CaCO3)
Sedimentary / Metamorphic
Amethyst Geode
Amethyst (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Breccia
Breccia
sedimentary
Gneiss
High-grade regional metamorphic rock
metamorphic
Glauconite (Green Sandstone)
Glauconite (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2
sedimentary
Carnelian
Carnelian (Microcrystalline Quartz, SiO2)
mineral
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Dolomite or Limestone (Carbonate Rock)
CaMg(CO3)2 (Dolomite) or CaCO3 (Limestone / Calcite)
sedimentary
Marble
Metamorphic rock composed of Recrystallized Carbonate Minerals (chiefly CaCO3)
metamorphic
Granodiorite Pebble
Granodiorite
igneous
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Diorite (Spotted or Dalmatian Stone effect)
Diorite (Intermediate Plutonic Rock)
igneous
Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
mineral
Granite
Granite (phaneritic felsic intrusive rock)
igneous
Granite Pebble
Granite (a plutonic igneous rock composed primarily of quartz, feldspar, and mica/amphibole)
igneous
Ironstone Concretion (Limonite/Goethite)
Goethite/Limonite concretion (FeO(OH)·nH2O)
sedimentary
K2 Jasper (K2 Granite)
Azurite in Granite (Biotite Granite with Azurite inclusions)
igneous
Chert Pebble with Quartz Veins
Microcrystalline Quartz (SiO2)
sedimentary
Ironstone Concretion (Moqui Marble type)
Iron oxide concretion (Goethite/Hematite and Sandstone)
sedimentary
Conglomerate
Clastic Sedimentary Conglomerate (SiO2, CaCO3 dominant)
sedimentary
Granitic Sand
Detrital sediment (predominantly Quartz, Feldspar, and Mica)
sedimentary
Himalayan Pink Salt
Halite (NaCl) with trace minerals
mineral
Quartz (Iron-Stained)
Silicon Dioxide (SiO2)
mineral
Quartz with Oxides
Silicon Dioxide (SiO2)
mineral
Copper-bearing Quartz (likely Chrysocolla or Malachite staining)
Cuprite, Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O) or Malachite staining on Quartz/Host Rock
mineral
Pyrite in Shale
Iron Sulfide (FeS2) in Sedimentary Matrix
mineral
Petrified Wood
Silicified Wood (SiO2)
mineral
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Quartz / Common Opal
Silicon Dioxide (SiO2)
mineral
Amethyst Geodes
Silicon Dioxide (Quartz with Iron impurities), SiO2
mineral
White Quartz (Tumbled)
Silicon Dioxide (SiO2)
mineral
Chalcedony
Cryptocrystalline Quartz (SiO2)
mineral
Granite
Granite (Felsic Plutonic Rock)
igneous
Granite (Polished Pebble)
Phaneritic Plutonic Rock (primarily Orthoclase and Quartz)
igneous
Granite
Granite (composed mainly of Quartz, Feldspar, and Mica)
igneous