Fossilized Shark Tooth
Carcharocles sp. or Striatolamia sp. (Phosphate/Carbonate mineralized Hydroxyapatite)
sedimentary
Category
Mineral Based Composite
Browse mineral based composite specimens identified by the Rock Identifier community.
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Fossilized Shark Tooth
Chondrichthyes (Class)
fossil
Gravel or Pebble
Clastic Sedimentary Grain (typically composed of Quartz or Silicate minerals)
sedimentary
Epidote
Epidote (Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic
Conglomerate (Puddingstone)
Conglomerate (specifically, clastic sedimentary rock)
Sedimentary
Likely rough blue-green beryl (aquamarine)
Beryl, Be₃Al₂Si₆O₁₈; blue-green color is caused mainly by iron
gemstone
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral
Iron Slag (Industrial Byproduct)
Anthropogenic Vitrification Product/Ferrous Slag
Mineral-like Industrial Smelting Waste
Granite Pebble
Intrusive Igneous Rock
igneous
Wishing Stone (Basalt/Greywacke with Quartz Vein)
Basalt or Siltstone with SiO2 (Quartz) hydrothermal intrusion
igneous/sedimentary
K2 Jasper (K2 Granite)
Azurite in Granite (Biotite Granite with Azurite inclusions)
igneous
Chalcedony (Common Agate pebble)
Silicon Dioxide (SiO2)
mineral
Granite
Intrusive igneous felsic rock
igneous
Heat-Treated Citrine (Amethyst)
Silicon Dioxide (SiO2) with iron impurities
mineral
Chalcedony (Agate/Chert)
Silicon Dioxide (SiO2)
mineral
Aura Quartz
Silicon Dioxide (SiO2) with metallic vapor coating
mineral
Aura Quartz (Titanium-coated Quartz)
Silicon Dioxide (SiO2) with metallic vapor coating
mineral
Epidote
Epidote Group (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
metamorphic
Chert (specifically Jasper/Carnelian Agate)
Microcrystalline Quartz (SiO2)
sedimentary
Dyed Blue Agate
Silicon Dioxide (SiO2) with artificial pigment
mineral
Diamond
Diamond (a metastable allotrope of carbon, C)
Mineral
Gneiss
Gneiss (Foliated Metamorphic Rock)
metamorphic
Orca Agate (Blue Chalcedony)
Silicon Dioxide (SiO2)
mineral
Basalt with Porphyritic Texture
Porphyritic Basalt
igneous
Vesicular Basalt with Siltstone
Mafic Volcanic Rock (Basaltic Composition)
igneous
Quartz Vein in Host Rock (Gabbro or Basalt)
Silicon Dioxide (SiO2) with Mafic Silicates
metamorphic/igneous
Limestone with Calcite Crust
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Blue Topaz
Al2SiO4(F,OH)2
gemstone
Concrete with Aggregate
Artificial Conglomerate (Cement and Aggregate)
sedimentary
Schist
Mica Schist
metamorphic
Quartz with Mica (Muscovite or Biotite)
Silicon Dioxide (SiO2) with Phyllosilicates
mineral
Fossilized Shark Tooth (Root Portion)
Selachimorpha (partial specimen)
fossil
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Sandstone (likely Arkose or Lithic)
Clastic sedimentary rock (SiO2 + impurities)
sedimentary
Schist
Schist (Metamorphic Rock)
metamorphic
Man-made Slag (Industrial Byproduct)
Anthropogenic Glassy Residue
not a natural rock
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Iron oxide inclusions
sedimentary
Dalmatian Jasper
Dalmatian Stone (comprised of Feldspar, Quartz, and Arfvedsonite)
igneous
Shale
Argillite / Shale
sedimentary
Sodalite with Syenite (Yooperlite)
Sodalite in Syenite (Na8(Al6Si6O24)Cl2)
mineral
Granite / Quartz Vein Rock
Granitoid with Quartz (SiO2)
igneous
Granite
Phaneritic intrusive igneous rock (Quartz, Feldspar, Mica)
igneous