Ruby in Zoisite (Anyolite)
Anyolite (Combination of Corundum and Zoisite)
metamorphic
Category
Sedimentary Or Metamorphic (Base Substrate)
Browse sedimentary or metamorphic (base substrate) specimens identified by the Rock Identifier community.
Learn about Sedimentary Or Metamorphic (Base Substrate) in the encyclopedia
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Quartzite Pebble
Quartzite (SiO2)
metamorphic
Sandstone (Quartzite-rich)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Heliotrope (Bloodstone)
Silicon Dioxide with Iron Oxide (SiO2)
sedimentary
Marble (Fire and Ice or Pink Veined)
Metamorphosed Limestone (principally CaCO3)
metamorphic
Schist (Diamond Drill Core)
Mica Schist
metamorphic
Muscovite (Mica)
Muscovite - KAl2(AlSi3O10)(OH)2
Mineral
Dragon Blood Jasper
Epidote with Red Jasper (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH))
sedimentary
Mica Schist
Schist (muscovite-biotite schist)
metamorphic
Schist
Mica Schist (Medium-grade metamorphic rock)
metamorphic
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Sandstone (Ferruginous)
Arenite with Iron Oxide cement
sedimentary
Sandstone Pebble (River Cobble)
Arenite (Sandstone)
sedimentary
Muscovite Mica
Muscovite - KAl2(AlSi3O10)(OH)2
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Sandstone (likely Calcareous or Quartz-rich)
Arenite (SiO2 based typically)
sedimentary
Sandstone (likely Quartzose Sandstone)
Arenite (primarily SiO2)
sedimentary
Limestone Gravel
Calcium Carbonate (CaCO3)
sedimentary
Sunstone with Black Tourmaline (Arfvedsonite)
Feldspar (Na,Ca)(Al,Si)4O8 with Schorl Na(Fe3+)3Al6(Si6O18)(BO3)3(OH)3(OH)
mineral
Mica Schist
Mica Schist (primarily Muscovite or Biotite within a foliated matrix)
metamorphic
Chalcopyrite (Peacock Ore)
Chalcopyrite (CuFeS2)
mineral
Painted Sandstone Cobble
Clastic Sedimentary Rock (Sandstone base)
sedimentary
Biotite Schist
Biotite Schist (Metamorphic Rock featuring K(Mg,Fe)3AlSi3O10(OH)2)
metamorphic
Graphite
Graphite (Carbon, C)
Mineral
Citrine Geode Fragment
Citrine (Silicon Dioxide with Iron Impurities), SiO2
mineral
Mica Schist
Mica Schist (KAl2(AlSi3O10)(OH)2 / K(Mg,Fe)3AlSi3O10(OH)2)
metamorphic
Schist
Mica Schist
metamorphic
Mica Schist
Schist (Biotite/Muscovite dominant)
metamorphic
Mica Schist
Mica Schist (primarily Muscovite and Quartz)
metamorphic
Serpentine
Serpentinite (complex of Mg, Fe, Ni, Al, Zn, Mn)Si2O5(OH)4
metamorphic
Green Aventurine
SiO2 (Silicon Dioxide with inclusions of Fuchsite)
mineral
Conglomerate
Clastic sedimentary rock (Conglomerate)
sedimentary
Quartzite
Quartzite (mostly SiO2)
metamorphic
Citrine (likely Heat-Treated)
Quartz (Silicon Dioxide, SiO2)
mineral
Mosasaur Tooth Fossil
Mosasauridae (likely Prognathodon or Plioplatecarpus)
fossil
Sandstone (likely Graywacke or Arkose variant)
Clastic Sedimentary Rock (SiO2 based)
sedimentary
Tiger’s eye
Quartz variety, primarily silicon dioxide (SiO₂); fibrous quartz pseudomorph after crocidolite asbestos
gemstone
Peacock Ore (Bournite/Chalcopyrite)
Bornite (Cu5FeS4) or Acid-Treated Chalcopyrite (CuFeS2)
mineral
Dalmatian Jasper
Peralkaline rhyolite with arfvedsonite inclusions
igneous
Bloodstone
Heliotrope (cryptocrystalline Quartz, SiO2 with inclusions of Hematite)
sedimentary
Kambaba Jasper
Stromatolite (Fossilized Algae)
sedimentary
Granitic Sand
Detrital sediment (predominantly Quartz, Feldspar, and Mica)
sedimentary