Carnelian
Carnelian (SiO2 with Iron Oxide impurities)
Category
Browse mineral within a sedimentary rock specimens identified by the Rock Identifier community.
Carnelian
Carnelian (SiO2 with Iron Oxide impurities)
Chert (Jasper/Agate variety)
Silicon Dioxide (SiO2)
Snakeskin Jasper
Silicon Dioxide (SiO2) with iron oxide and calcium carbonate inclusions
Chert / Flint
Microcrystalline quartz (SiO2)
Blue Lace Agate
Cryptocrystalline Quartz (SiO2) with trace minerals
Turquoise
Hydrated copper and aluminum phosphate (CuAl6(PO4)4(OH)8·4H2O)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Sandstone (Stream-rounded Cobble)
Arenite (composed primarily of SiO2, Silica)
Chert (Jasper/Flint Pebble)
Microcrystalline quartz (SiO2)
Carnelian (Orange Agate)
Silicon Dioxide (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Gneiss
Gneissic Metamorphic Rock
Chert (Iron-stained)
Silicon Dioxide (SiO2) with Ferruginous impurities
Geode (Unopened Keokuk Geode)
Silicon Dioxide (SiO2) - Chalcedony / Quartz exterior
Sandstone (Ferruginous)
Arenite with Iron oxide staining (SiO2 with Fe2O3)
Gneiss
Metamorphic rock (Gneiss)
Dalmatian Jasper
Peralkaline Quartz Feldspar Porphyry
Banded Chert (likely Flint or Jasper variety)
Silicon Dioxide (SiO2)
Thunder Egg (Agate/Jasper filled)
Chalcedony variety Agate/Jasper in a Rhyolitic matrix
Shale
Shale (fine-grained clastic sedimentary rock)
Ferruginous Sandstone
Iron-rich Clastic Sedimentary Rock
Carnelian
Carnelian (Silica/Chalcedony, SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Red Jasper
SiO2 (Silicon Dioxide with Iron Oxide inclusions)
Amethyst
Silicon Dioxide (SiO2)
Gneiss
Gneiss (High-grade regional metamorphic rock)
Sandstone (with Liesegang rings or Oxidation)
Arenite (primarily Quartz SiO2 with Iron Oxide Fe2O3 staining)
Banded Gneiss
Banded Gneiss (High-grade Metamorphic Rock)
Chert
Chert (Microcrystalline Quartz, SiO2)
Limestone with Calcite Veining
Sedimentary Carbonate Rock (CaCO3)
Quartz Geode
Crystalline Silicon Dioxide (SiO2) in Geode form
Sandstone Concretion
Clastic Sedimentary Rock (primarily SiO2 with mineral cement)
Sandstone (Ferruginous)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)
Sandstone Concretion
Clastic sedimentary rock (primarily Quartz SiO2)
Chert (Jasper)
Silicon Dioxide (SiO2)
Yellow Jasper
Silicon Dioxide (SiO2)
Mica Schist
Mica Schist (primarily Muscovite and Biotite composition)
Concretion (Sandstone)
Carbonate-cemented Sandstone Concretion
Chert (Yellow Jasper/Flint)
Microcrystalline Quartz (SiO2)
Ironstone Concretion
Siderite / Hematite-bearing Sedimentary Rock
Sandstone Concretion
Moqui Marble / Iron-oxide Concretion (SiO2 with Hematite/Goethite)
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)