Chert (Nodule)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Category
Browse mineral, often found in sedimentary deposits specimens identified by the Rock Identifier community.
Chert (Nodule)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Zebra Jasper
Silicon Dioxide (SiO2) - Macro-crystalline Quartz/Chert with impurities
Petrified Wood (Silicified Wood)
Silicified Paleoflora (mainly Quartz, SiO2)
Gneiss (Banded Gneiss)
Gneiss
Pyrite
Iron Sulfide (FeS2)
Carnelian Agate
Silicon Dioxide (SiO2) - Variety of Chalcedony
Calcite (Optical Grade/Iceland Spar)
Calcium Carbonate (CaCO3)
Ferruginous Sandstone (Gozzanous)
SiO2 (Quartz) with FeO(OH) (Goethite) or Fe2O3 (Hematite) coating
Conglomerate
Conglomerate (clastic sedimentary rock)
Pyrite on Quartz matrix
Iron Disulfide (FeS2) on Silicon Dioxide (SiO2)
Blue Chalcedony
Chalcedony (SiO2)
Yellow Calcite
Calcite (Calcium Carbonate, CaCO3)
Travertine (Tufa)
Calcium Carbonate (CaCO3)
Red Jasper
Jasper (Silicon Dioxide, SiO2 with Fe2O3 inclusions)
Orange Calcite
Calcite (CaCO3)
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Chert (Nodule)
Chert (Silicon Dioxide, SiO2)
Chert (Jasper/Flint variant)
Silicon Dioxide (SiO2)
Jasper
Silicon Dioxide (SiO2)
Sandstone
Arenite (SiO2 based with primary clasts 0.0625 to 2 mm)
Agatized Chert / Chalcedony
Silicon Dioxide (SiO2)
Ferruginous Sandstone (Gozzan)
Iron-rich clastic sedimentary rock with Limonite/Goethite
Granite (Weathered/Oxidized)
Phaneritic Felsic Igneous Rock (composed of Quartz, Orthoclase Feldspar, and Mica)
Green Fluorite (Beaded)
Fluorite (Calcium Fluoride, CaF2)
Quartz Veined Rock (Likely Graywacke or Quartzite)
Silicon Dioxide (SiO2) veins in Metasedimentary matrix
Gold
Native Gold (Au)
Chert (Yellow Jasper variant)
Microcrystalline quartz (SiO2)
Pyrite on Limestone
Iron Disulfide (FeS2) in Calcium Carbonate (CaCO3) matrix
Silver (Jewelry Specimen)
Native Silver (Ag)
Carnelian
Carnelian (a variety of Chalcedony, SiO2)
Specular Hematite (Specularite)
Iron Oxide (Fe2O3)
Jasper (Green variety)
Silicon Dioxide (SiO₂)
Jasper
Silicon Dioxide (SiO2)
Red Moss Agate (Jasper)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Jasper
Jasper (Silicon Dioxide, SiO2)
Chert (White Chert / Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Sandstone
Arenite (Sedimentary Rock)
Sandstone Concretion
Ferruginous Sandstone Concretion (Primarily SiO2 with Iron Oxide cement)
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz, SiO2)
Green Calcite
Calcium Carbonate (CaCO3)
Amber
Succinite (Organic Mineraloid) - C10H16O
Pink Opal
Hydrated Amorphous Silica (SiO2·nH2O)