Chert (and Limestone)
Chert (consisting of Microcrystalline Quartz, SiO2)
sedimentary
Category
Sedimentary And Metamorphic Minerals
Browse sedimentary and metamorphic minerals specimens identified by the Rock Identifier community.
Chert (Jasper variety)
Silicon Dioxide (SiO2)
sedimentary
Chert (specifically Blue Chert or Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Yellow Jasper/Flint)
Silicon Dioxide (SiO2)
sedimentary
Jasper River Stone
Silicon Dioxide with Iron Oxide impurities (SiO2 + Fe2O3)
sedimentary
Chert (specifically Gray/Blue Chert)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with iron hydroxides (Goethite)
sedimentary
Rose Quartz
Rose Quartz (SiO2)
mineral
Limonite (Gozzany Iron)
Limonite (FeO(OH)·nH2O)
mineral
Jasper and Quartzite Pebble
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary/metamorphic
Glauconitic Sandstone
Glauconitic Quartz-Wacke / Sandstone (Fe(II),Fe(III),Al,Mg)2-3(Si,Al)4O10(OH)2
sedimentary
Sandstone or Mudstone with Iron Staining
Ferruginous Sandstone/Mudstone
Sedimentary
Epidote
Epidote (Ca2(Al,Fe)3(SiO4)3(OH))
mineral
Garnet-bearing Schist
Almandine Garnet (Fe3Al2(SiO4)3) in Mica Schist
metamorphic
Wonderstone (Sandstone)
Liesegang Banded Sandstone (SiO2 dominated)
sedimentary
Conglomerate (River Rock)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Banded Sandstone
Arenite (with iron oxide banding)
sedimentary
Septarian Nodule (or Mudstone with Septarian Cracking)
Septarian Concretion (Composition: Calcite, Aragonite, and Limestone/Claystone)
sedimentary
Sandstone Moqui Marble (Concretion)
Iron oxide concretion (Hematite/Goethite and Quartz)
sedimentary
Ironstone (Limonitic Sandstone)
Ferruginous Sandstone (rich in Limonite: FeO(OH)·nH2O)
sedimentary
Ferruginous Chert (Jasper)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Fossilized Coral (Petoskey Stone type)
Hexagonaria percarinata (Fossilized Rugose Coral)
sedimentary
Moqui Marble
Iron Oxide Concretion (Limonite/Hematite over Sandstone)
sedimentary
Sandstone (Ferruginous)
Arenite (composed primarily of SiO2 with Fe2O3 staining)
sedimentary
Petrified Wood
Silicified Wood (primarily SiO2 - Silicon Dioxide)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Moqui Marble (Iron-Oxide Concretion)
Iron Oxide Concretion (Fe2O3)
sedimentary
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Picture Jasper
Silicon Dioxide (SiO2) with iron oxide and clay impurities
sedimentary
Chert (variant Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Ammonite Fossil (Polished Section)
Ammonoidea (typically mineralized with Calcite CaCO3)
sedimentary
Iron Gossan (Limonite/Goethite)
Hydrated Iron Oxides (FeO(OH)·nH2O) from oxidation zones
sedimentary
Green Common Opal
Hydrated Silica (SiO2·nH2O)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Mica Schist
Mica Schist
metamorphic
Banded Slate (Lithified Mudstone)
Low-grade Metamorphosed Mudstone / Slate
metamorphic
Gneiss
Gneiss
metamorphic
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Dalmatian Jasper (or Dalmatian Stone)
Dalmatian Stone (A peralkaline felsite composed of feldspar, quartz, and sodic amphibole)
igneous
Conglomerate
Conglomerate (Sedimentary Clastic Rock)
sedimentary