Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Category
Not A Rock (Animated Character)
Browse not a rock (animated character) specimens identified by the Rock Identifier community.
Quartz with Hematite Staining
Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3) inclusions
mineral
Ruby in Zoisite
Ruby (α-Al2O3) embedded in Zoisite (Ca2Al3(SiO4)3(OH)) with some Hornblende
Metamorphic Rock (composed of multiple minerals)
Granite
Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)
igneous
Fluorite (Rainbow or Multi-colored Fluorite)
Fluorite (Calcium Fluoride - CaF2)
mineral
Leopard Skin Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Limonite (after Pyrite Pseudomorph)
Limonite (Hydrated Iron Oxide Mixture, FeO(OH)·nH2O)
mineral
Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
mineral
Dendritic Agate
Silicon Dioxide (SiO2) with manganese/iron inclusions
mineral
Mica Schist
Mica Schist (predominantly Muscovite or Biotite sheet silicates)
metamorphic
Travertine
Travertine (CaCO3 - Calcium Carbonate)
sedimentary
Green Aventurine
SiO2 (Silicon Dioxide) with Fuchsite inclusions
mineral
Agate Geode
Silicon Dioxide (SiO2) - Banded Chalcedony
mineral
Moss Agate
Chalcedony (Silicon Dioxide) with inclusions - SiO2
mineral
Ocean Jasper
Silicon Dioxide (SiO2) with various inclusions
Mineral (Variety of Quartz)
Schist (specifically Mica Schist)
Mica Schist (primarily composed of Muscovite KAl2(AlSi3O10)(OH)2 and Biotite)
metamorphic
Amazonite
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Amethyst
Amethyst (SiO2 with Iron impurities)
mineral
Ferruginous Breccia
Breccia with Iron-rich (Hematite/Goethite) Matrix
sedimentary
Asphalt (Bituminous Pavement Bit)
Bitumen-bound aggregate (Petrochemical-bound composite)
sedimentary (anthropogenic/technogenic)
Dendritic Rhodonite
Rhodonite (Manganese Silicate), (Mn,Fe,Mg,Ca)SiO3
mineral
Milky and Ferruginous Quartz
Silicon Dioxide (SiO2)
mineral
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
mineral
Serpentinite
Serpentinite (composed primarily of minerals in the Serpentine group)
metamorphic
Corundum (Sapphire variant)
Aluminium oxide (Al2O3)
mineral
Oak Wood (Wood Grain Pattern)
Quercus (genus)
Organic (Non-rock)
Banded Agate (specifically Lace Agate type)
Silicon Dioxide (SiO2)
mineral
Mica Schist with Iron Staining
Muscovite/Biotite Schist
metamorphic
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Greenstone / Diabase Porphyry
Porphyritic Diabase (Micro-gabbro)
Igneous
Lapis Lazuli
Lazurite-rich metamorphic rock (complex silicate)
metamorphic
Moonstone
Orthoclase (Potassium Feldspar) - (K,Na)AlSi3O8
mineral
![Lapis Lazuli (in Matrix) (Na8[Al6Si6O24]S2 (Lazurite as the primary component)) — metamorphic](https://media.rockidentification.com/cc8b0a02-50a3-4f03-bf51-9245bab011ac-thumbnail.jpg)
Lapis Lazuli (in Matrix)
Na8[Al6Si6O24]S2 (Lazurite as the primary component)
metamorphic
André Landed Here Rock (Glacial Erratic)
Granodiorite / Diorite (compositional estimate)
igneous
Moonstone
Adularia (Potassium Aluminum Silicate, KAlSi3O8)
mineral
Blue Dyed Agate
Chalcedony (cryptocrystalline variety of Quartz), SiO2
mineral
Smoky Quartz
Smoky Quartz (SiO2 - Silicon Dioxide with aluminum impurities)
mineral
Lapis Lazuli
Lapis Lazuli (Complex aggregate of Lazurite, Calcite, and Pyrite)
metamorphic
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Bloodstone (Heliotrope)
Silicon Dioxide (SiO2) with inclusions of Chlorite or Actinolite
sedimentary
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral