Coquina
Bioclastic Limestone (composed primarily of CaCO3)
sedimentary
Category
Mineral (Man Made Glass)
Browse mineral (man made glass) specimens identified by the Rock Identifier community.
Granite (Pegmatitic)
Phaneritic Felsic Igneous Rock
igneous
Sandstone
Arenite (composed primarily of Quartz: SiO2)
sedimentary
Granite
Phaneritic Plutonic Felsic Rock (SiO2, KAlSi3O8, NaAlSi3O8, CaAl2Si2O8)
igneous
Chert (specifically Gray/Blue-Gray Chert)
Chert (SiO2)
sedimentary
Ferruginous Sandstone (Ironstone)
Clastic Sedimentary Rock (composed of SiO2 with Fe2O3/FeO(OH) cement)
sedimentary
Desert Rose (also known as Sand Rose)
Gypsum (CaSO4·2H2O) or Barite (BaSO4) with sand inclusions
mineral
Bismuth Crystal
Bismuth (Bi)
mineral
Pearl
Aragonite (CaCO3 with conchiolin)
mineral
Pyrulite (Pyrite / Chalcopyrite)
Iron Sulfide (FeS2) or Copper Iron Sulfide (CuFeS2)
mineral
Specular Hematite (Specularite)
Iron Oxide (Fe2O3)
mineral
Gold
Native Gold (Au)
mineral
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
mineral
Amazonite
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Fossilized Coral (Coquina/Limestone)
Cnidaria Anthozoa (Fossilized)
sedimentary
Yooperlite (Syenite clast containing fluorescent Sodalite)
Sodalite-bearing Syenite
igneous
Diorite
Diorite (Intermediate intrusive igneous rock)
igneous
Coquina
Bioclastic Limestone
sedimentary
Obsidian
Obsidian (volcanic glass)
Igneous
Coquina
Biogenic Limestone (Calcite/Aragonite base, CaCO3)
sedimentary
Granite (weathered pebble)
Granite (plutonic igneous rock)
Igneous
Beaded Jewelry (Assorted Gemstones)
Various minerals, including but not limited to Quartz (SiO2), Garnet (X3Y2(SiO4)3), Jade (Na(Al,Fe)Si2O6), Amethyst (SiO2),等の多様な組み合わせ
Mineral, Jewelry
Titanium Aura Quartz
Titanium-coated Silicon Dioxide (SiO2)
mineral (man-enhanced)
Asphalt Concrete
Bituminous Concrete / Asphaltic Composite
not a natural rock (man-made composite)
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Granite
Granite (a phaneritic intrusive igneous rock consisting mainly of quartz, alkali feldspar, and plagioclase)
igneous
Diorite
Diorite
igneous
Pyrite
Iron Sulfide (FeS2)
mineral
Chert (Jasper/Flint variant)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Bituminous Coal (with Anthracite or Vitrinite inclusion)
Organic-rich Sedimentary Rock (Carboniferous classification)
sedimentary
Amber (Copal)
Organic gemstone, fossilized tree resin (often immature amber or copal)
Mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Chert (specifically Yellow/Brown Chert or Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Obsidian
Obsidian (volcanic glass, amorphous silica rich rock)
Igneous
Pyrite
Iron Sulfide (FeS2)
mineral
Angel Aura Quartz (Treated Clear Quartz)
Silicon Dioxide (SiO2) coated with Vaporized Silver and Platinum
mineral
Amethyst
Amethyst (Silicon Dioxide, SiO2 + Fe4+ impurities)
mineral
Diabase (Greenstone)
Diabase (also known as Dolerite)
igneous
Moonstone
Orthoclase Feldspar (formula: (K,Na)AlSi3O8)
mineral
Petrified Wood (Silicified Wood)
Silicified Paleoflora (mainly Quartz, SiO2)
metamorphic
Sea Shell (Fighting Conch Fragment)
Calcium Carbonate (CaCO3) - Strombus alatus fragment
sedimentary (biogenic)
Pearl (with Peridot)
Calcium carbonate (CaCO3) + Conchiolin; Peridot: Magnesium iron silicate (Mg, Fe)2SiO4
mineral