Lapis Lazuli
Complex metamorphic rock primarily composed of Lazurite ((Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2), Calcite, and Pyrite
metamorphic
Category
Not A Rock (Animated Character)
Browse not a rock (animated character) specimens identified by the Rock Identifier community.
Amazonite
Amazonite (KAlSi3O8, a variety of Microcline)
Mineral
Nephrite (a form of Jade)
Nephrite (a variety of the mineral actinolite, Ca2(Mg,Fe)5Si8O22(OH)2)
Mineral
Flower Agate (Cherry Blossom Agate)
Chalcedony (SiO2) with Opaque Inclusions
mineral
Leopard Skin Jasper
Chalcedony (cryptocrystalline quartz) with inclusions
Mineral
Nephrite Jade
Nephrite
Mineral/Rock
Fluorite
Calcium Fluoride (CaF2)
mineral
Amethyst (Quartz)
SiO2 (Silicon Dioxide)
mineral
Titanium Aura Quartz (Aura Quartz)
Titanium-coated Silicon Dioxide (SiO2)
mineral
Amazonite
Amazonite (KAlSi3O8)
mineral
Gold Nugget
Native Gold (Au)
mineral
Pebble (likely Sandstone or Granitic Pebble)
Clastic Sediment (or specific rock type, e.g., Arenite, Granitoid Pebble)
Rock (likely Sedimentary)
Orange Calcite (likely polished specimen)
Calcite
Mineral
Man-made Slag (Industrial Byproduct)
Anthropogenic Glassy Residue
not a natural rock
Dalmatian Stone
Dalmatian Jasper (Aplitic Perthite)
igneous
Quartz Geode (partially formed/chalcedony with iron staining)
Quartz (SiO2) with Chalcedony (cryptocrystalline quartz) and likely Iron Oxides/Hydroxides
Mineral/Sedimentary Rock Feature
Amethyst
SiO2 (Silicon Dioxide)
Mineral
Sodalite
Sodalite - Sodium Aluminum Silicate Chloride (Na8(Al6Si6O24)Cl2)
mineral
Mica Schist
Mica Schist (predominantly composed of Muscovite or Biotite silicates)
metamorphic
Lapis Lazuli
Lapis Lazuli (Complex silicate rock containing Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, Pyrite, and Calcite)
metamorphic
Caribbean Calcite
Calcite (CaCO3) with Aragonite (CaCO3)
mineral
Gold Nugget
Native Gold (Au)
mineral
Slag Glass
Vitreous Silicate Residue
industrial byproduct (anthropogenic rock)
Conglomerate
Conglomerate (a clastic sedimentary rock)
Sedimentary Rock
Granite
Granite (a common rock type, not a single mineral species)
Igneous
Sandstone
Arenite (general term for sandstone)
Sedimentary Rock
Human Skin (Epidermis/Dermis)
Integumentary tissue (High content of hydroxyapatite in bones, though the surface is biological)
Mineral-like biological tissue
Green Aventurine
Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Agate (specifically Lake Superior Agate style or Banded Chalcedony)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Chert (or Flint)
Chert (cryptocrystalline quartz), SiO2
Sedimentary
Titanium Aura Quartz
Titanium bonded Silicon Dioxide (SiO2 + Ti)
mineral
Agate
Silicon dioxide (SiO2)
mineral
Granite
Granite
igneous
Basalt
Basalt (extrusive igneous rock)
Igneous
Rutilated Quartz
Quartz with Rutile Inclusions (SiO2 with TiO2 inclusions)
Mineral
Sandstone
Sandstone (Clastic Sedimentary Rock)
Sedimentary Rock
Limestone with Chert or Siltstone bands
Sedimentary carbonate rock (CaCO3) often with siliceous impurities
sedimentary
Granite
Phaneritic high-silica plutonic rock (composed primarily of Quartz, Feldspar, and Mica)
igneous
Bivalve Shell (Fossil or Contemporary)
Class Bivalvie (various genera and species of clams, cockles, etc.)
Sedimentary (Biogenic sediment or biological remain)
Fancy Jasper
Silicon Dioxide (SiO2)
mineral
Granite
Granite (a common rock type, not a single mineral with a formula. Composed primarily of quartz, feldspar, and mica/amphibole).
igneous
Green Fluorite
Calcium Fluoride (CaF2)
mineral