Chert (or Flint)
Chert (a cryptocrystalline variety of quartz, SiO2)
sedimentary
Category
Sedimentary Rock (Possibly Conglomerate Or Breccia With A Quartz Vein)
Browse sedimentary rock (possibly conglomerate or breccia with a quartz vein) specimens identified by the Rock Identifier community.
Red Jasper
Jasper (Silica with Iron Oxide inclusions), SiO2
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with iron impurities
sedimentary
Gneiss
Metamorphic Gneiss
metamorphic
Druzy Quartz (on Chalcedony/Agate base)
Silicon Dioxide (SiO2)
mineral
Chert (Brecciated River Cobble)
Silicon Dioxide (SiO2)
sedimentary
Orange Quartz (or Tumbled Carnelian)
Silicon Dioxide (SiO2) with iron oxide inclusions
mineral
Granite Gneiss River Rock
Gneiss
Metamorphic
Chalcedony Geode
Chalcedony (SiO2) within a geode structure
Mineral Geode/Sedimentary or Volcanic related
Red Jasper
Jasper (Silicon Dioxide, SiO2 with Iron Oxide impurities)
sedimentary
Schist (Micaceous Schist)
Schist (comprising Muscovite/Biotite mica, Quartz, and Feldspar)
metamorphic
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
mineral
Gold Ore in Matrix
Native Gold (Au) in Quartz/Limonite host rock
mineral
Quartz (Double-Terminated)
Silicon Dioxide (SiO2)
mineral
Ocean Jasper
Orbicular Jasper (Silicon Dioxide with impurities like Hematite and Chlorite, SiO2)
sedimentary
Quartzite
Quartzite (primarily SiO2)
metamorphic
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Jasper with Quartz Veining
Silicon Dioxide (SiO2) - Cryptocrystalline Chalcedony
sedimentary
Chert (includes Flint & Jasper)
Chert (Siliceous sedimentary rock, chemical formula SiO2)
sedimentary
Quartz (Clear/White)
Silicon Dioxide (SiO2)
mineral
Graywacke (River Cobble)
Graywacke (Lithic Sandstone)
sedimentary
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Gneiss (specifically a Granitic Gneiss)
Gneiss (typically composed of Quartz, Feldspar, and Mica/Amphiboles)
metamorphic
Pyrite
Iron Sulfide (FeS2)
mineral
Gneiss
Gneiss (quartz-feldspar-biotite gneiss)
metamorphic
Quartz Geode in Sedimentary Matrix
Silicon Dioxide (SiO2) within a limestone/dolostone host
mineral
Sandstone Pebble (Quartzite-rich)
Clastic Terrigenous Sedimentary Rock (SiO2 dominant)
sedimentary
Quartz (specifically Milky or Clear Quartz)
Silicon Dioxide (SiO2)
mineral
Gneiss Pebble
Gneiss
metamorphic
Sandstone
Sandstone (lithified arenite/wacke)
Sedimentary Rock
Quartz Geode (with Agate banding)
Silicon Dioxide (SiO2)
Sedimentary or Igneous (secondary formation)
Jasper (Iron-stained Quartz)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Quartz Pebble (Chalcedony/Agate variety)
Silicon Dioxide (SiO2)
mineral
Banded Sandstone (Quartzite-rich)
Clastic Sedimentary Rock (SiO2 with Iron Oxide impurities)
sedimentary
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Specular Hematite
Specularite (Fe2O3)
mineral
Mica Schist
Mica Schist (predominantly Muscovite or Biotite sheet silicates)
metamorphic
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Red Jasper
Opaque microcrystalline Quartz (SiO2 with Fe2O3 inclusions)
sedimentary
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Banded Chert (Jasper)
Silicon Dioxide (SiO2)
sedimentary