Chert (Banded)
Chert (Microcrystalline Silicon Dioxide, SiO2)
Category
Browse mineral within sedimentary rock specimens identified by the Rock Identifier community.
Chert (Banded)
Chert (Microcrystalline Silicon Dioxide, SiO2)
Chert (varietal: Flint Pitted Pebble)
Cryptocrystalline Quartz (SiO2)
Celestite (Celestine)
Strontium sulfate (SrSO4)
Chert (Jasper/Flint variant)
Silicon Dioxide (SiO2)
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
Gneiss (Metamorphic Rock)
Gneiss
Limestone with Calcite Veins
Sedimentary Calcium Carbonate (CaCO3)
Amethyst
Amethyst (Silicon Dioxide, SiO2)
Carnelian
Carnelian (subset of Chalcedony); SiO2 with Iron Oxide impurities
Amethyst
Crystalline Quartz (SiO2) with iron impurities
Conglomerate with Native Copper
Clastic Sedimentary Rock with Native Copper (Cu)
Coarse-grained Quartz with Feldspar inclusions
Crystalline Quartz (SiO2) with Orthoclase/Plagioclase Feldspar inclusions
Ferruginous Sandstone (Ironstone Nodules)
Ferruginous Quartz-Arenite (with Goethite/Hematite cement)
Septarian Nodule (Dragon Stone) sphere
Septarian concretion (Calcite, Aragonite, and Limestone)
Gneiss
Gneiss (High-grade regional metamorphic rock)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Chert (containing Quartz)
Microcrystalline Silica (SiO2)
Chert (Chalcedony/Agate)
Microcrystalline Quartz (SiO2)
Limestone (with Iron-Oxide staining)
Sedimentary Calcium Carbonate (CaCO3)
Chert (specifically Flint or Dark Chert)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Nodular)
Microcrystalline Silica (SiO2)
Druzy Quartz (on Geode Fragment)
Silicon Dioxide (SiO2)
Native Copper within Host Rock
Native Copper (Cu)
Celestite (Celestine) Geode
Strontium Sulfate (SrSO4)
Granitic Gneiss
Gneiss (high-grade metamorphic rock primarily of quartz, feldspar, and mica)
Fossilized Echinoid (Sea Urchin)
Echinoidea (Class), often found as calcitic fossils
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Chert (and Flint variant)
Microcrystalline Quartz (SiO2)
Quartz (on matrix)
Quartz (Silicon Dioxide, SiO₂)
Chert (Yellow Jasper variant)
Silicon Dioxide (SiO2)
Chert
Chert (variant of microcrystalline quartz)
Rough Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
Smoky Quartz
Silicon Dioxide (SiO2)
Chert (Nodule / Geode fragment)
Microcrystalline Quartz (SiO2)
Sandstone
Sandstone (clastic sedimentary rock)
Muscovite Mica
Muscovite (KAl₂(AlSi₃O₁₀)(F,OH)₂))
Crushed Limestone
Calcite-rich Sedimentary Rock (CaCO3)
Chert (and/or River Pebble)
Microcrystalline silica (SiO2)
Mica Schist
Mica Schist (primarily Muscovite and Quartz)
Chert (specifically Banded Chert)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (River Pebble)
Microcrystalline silicon dioxide (SiO2)
Moqui Marble (Shaman Stone)
Ironstone Concretion (Fe2O3) - primarily Hematite or Goethite shell with Sandstone core