Tufa (Limestone)
Calcareous Tufa (CaCO3)
sedimentary
Category
Igneous Or Metamorphic (Base Stone); Anthropogenic (Decoration)
Browse igneous or metamorphic (base stone); anthropogenic (decoration) specimens identified by the Rock Identifier community.
Moqui Marble
Ironstone Concretion (Goethite/Hematite)
sedimentary
Citrine
Crystalline Quartz (SiO2) with iron impurities
mineral
Basalt
Basalt (Mafic Extrusive Igneous Rock)
igneous
Greenschist
Greenschist (Actinolite-Chlorite Schist)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Jasper (likely Brecciated or Multi-colored)
Jasper (SiO2)
sedimentary
Epidote (likely Unakite component or Epidosite)
Epidote (Ca2(Al2Fe)(SiO4)(Si2O7)O(OH))
metamorphic
Epidote
Epidote Group (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
metamorphic
Chert (Blue-Gray Chert)
Microcrystalline quartz (SiO2)
sedimentary
Slag (Industrial Glass)
Anthropogenic Amorphous Vitreous Silicate
mineraloid
Ferrocoke or Slag
Anthropogenic pyrometallurgical residue
igneous
Synthetic Wolf Plush (Non-mineral)
Canis lupus similis (Prop material: Polyester & Synthetic fibers)
Synthetic material/Textile
Hypersthene
Enstatite (Hypersthene variety), (Mg,Fe)SiO3
mineral
Iron Slag (Industrial Byproduct)
Anthropogenic Vitrification Product/Ferrous Slag
Mineral-like Industrial Smelting Waste
Slag (Industrial Glass/Byproduct)
Anthropogenic Vitreous Silicate
igneous (anthropogenic)
Greenstone
Metabasalt / Chlorite-Epidote Schist
metamorphic
Gneiss
Gneiss
metamorphic
Slag (Industrial Byproduct)
Ferrous/Non-ferrous Silicate
igneous (artificial/anthropogenic)
Black Spinel
Magnesium Aluminum Oxide (MgAl2O4)
mineral
Fossil Coral
Cnidaria Anthozoa (Fossilized)
sedimentary
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Sodalite
Sodalite, Na8(Al6Si6O24)Cl2
mineral
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Citrine Quartz
SiO2 (Silicon Dioxide with Iron impurities)
mineral
Dacite
Dacite (Intermediate volcanic rock)
igneous
Epidote (Unakite variety)
Epidosite (Metasomatic rock containing Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic
Gneiss (with Quartz-Feldspar vein)
Gneiss (high-grade metamorphic rock) containing Quartz (SiO2) and Feldspar (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8)
metamorphic
Slag
Anthropogenic Vitrification Product / Silicate Slag
Anthropogenic (Man-made industrial byproduct)
Cupronickel (on a 1981 Mexico 20 Pesos coin)
Copper-Nickel Alloy (Cu75Ni25)
mineral
Granitic Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Bornite
Bornite (Cu5FeS4)
mineral
Greenstone
Metamorphosed Mafic Igneous Rock
metamorphic
Gneiss (Pebble)
Gneiss
metamorphic
Citrine (likely Heat-Treated)
Quartz (Silicon Dioxide, SiO2)
mineral
Gneiss (Granitic Gneiss)
Gneiss (from German Gneis, related to 'spark')
metamorphic
Slag
Glassy silicate byproduct (anthropogenic material)
industrial byproduct
Greenstone or Chlorite Schist
Greenschist / Chlorite schist
metamorphic
Rainbow Moonstone with Black Tourmaline
White Labradorite with Schorl (Na,Ca)(Al,Si)4O8
mineral
Banded Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Concrete / Conglomerate (Man-made)
Artificial Conglomerate (Cementitious Composite)
sedimentary
Quartz with Pyrite
Silicon Dioxide (SiO2) with Iron Sulfide (FeS2)
mineral