Fuchsite Schist
Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2) in Schist
metamorphic
Category
Mixed (Igneous, Sedimentary, Metamorphic, And Minerals)
Browse mixed (igneous, sedimentary, metamorphic, and minerals) specimens identified by the Rock Identifier community.
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Concrete
Anthropogenic Sedimentary Rock (Hydrated Calcium Silicate)
sedimentary (anthropogenic / man-made)
Galena
Lead Sulfide (PbS)
mineral
Feldspar (Granite Pegmatite matrix)
Potassium Feldspar (KAlSi3O8) / Quartz Mixture
igneous
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Sodalite
Na8Al6Si6O24Cl2
mineral
Dragon Blood Jasper
Epidote with Red Jasper (Quartz-rich aggregate)
sedimentary
Feldspar-Quartz Rock (likely Pegmatite or Granite)
Feldspar-Quartz composite rock (KAlSi3O8 - SiO2)
igneous
Granitic Quartz or Pegmatite
Quartz with Orthoclase Feldspar (SiO2 + KAlSi3O8)
igneous
Unakite
Epidotized Granite
metamorphic
Magnetite Ore
Magnetite (Fe3O4)
mineral
Quartz Boulder
Silicon Dioxide (SiO2)
mineral
Mixed pebble collection, including likely flint, quartzite, and fossil material
Varied silicate rocks; visible specimen may include chert (microcrystalline SiO₂), quartzite, and a possible fossil
sedimentary
Epidote in Quartz
Epidote (Ca2(Al2,Fe3+)3(SiO4)3(OH)) / Quartz (SiO2)
metamorphic
Epidosite with Quartz (Unakite-variant or Jasper)
Epidotized Metasomatite
metamorphic
Magnetite
Iron(II,III) oxide (Fe3O4)
mineral
Weathered granite pebble
Granite, predominantly quartz–feldspar–mica aggregate
igneous
Epidote (Unakite variety)
Epidosite (Metasomatic rock containing Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic
Magnetite / Ironstone
Magnetite (Fe3O4)
mineral
Granite Pegmatite
Pegmatite (Quartz, Feldspar, Mica)
igneous
Unakite (or Epidote-rich Granite)
Unakite (Metamorphosed Granite consisting of Epidote, Orthoclase, and Quartz)
metamorphic
Mixed Polished Gemstones (Tumbled Stones)
Mixed Silicates and Oxides (SiO2, KAlSi3O8, Ca2Al2Be3Si6O22, etc.)
mineral
River Siltstone / Mudstone Pebble
Siltstone (composed of mixed silicate and carbonate minerals)
sedimentary
Siltstone
Siltstone (composed of mixed silicate minerals and clay)
sedimentary
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Unakite
Epidotized Granite
metamorphic
Sodalite
Sodium Aluminum Silicate Chloride (Na8(Al6Si6O24)Cl2)
mineral
Glauconitic Sandstone
Glauconitic Sandstone (Quartz with Glauconite)
sedimentary
Weathered quartz-rich rock, possibly granite or granitic pegmatite
Indeterminate quartz–feldspar aggregate; likely granite/pegmatite
igneous
Pegmatite
Granitic Pegmatite
igneous
Dalmatian Stone (commonly called Dalmatian Jasper)
Peralkaline Rock (mixed Feldspar, Quartz, and Arfvedsonite)
igneous
Quartz (Agate/Jasper pebble)
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Granodiorite
Granodiorite (phaneritic intrusive igneous rock)
igneous
Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Tumbled metallic sulfide mineral specimen, likely pyrite-bearing ore
Likely pyrite (FeS₂) with associated sulfides and host rock; exact identification requires testing
mineral
Blue Quartz
Silicon Dioxide (SiO2) with inclusions
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Mixed Mineral Collection (Quartz, Amethyst, Rose Quartz, Pyrite, etc.)
Mixed Silicates and Sulfides (SiO2, FeS2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary