Limonite with Trace Fossils
Hydrous Iron Oxide Mixture (FeO(OH)·nH2O)
Category
Browse sedimentary (man made conglomerate) specimens identified by the Rock Identifier community.
Limonite with Trace Fossils
Hydrous Iron Oxide Mixture (FeO(OH)·nH2O)
Chert (Jasper/Opaline variety)
Silicon Dioxide (SiO2)
Moqui Marble (Concretion)
Iron Oxide Concretion (Hematite-cemented Sandstone)
Orange Calcite
Calcium Carbonate (CaCO3)
Pyrite
Iron Sulfide (FeS2)
Sandstone
Arenite
Devil's Toenail
Gryphaea (extinct genus of foam oysters, typically composed of Calcite CaCO3)
Sandstone
Arenite (primarily SiO2)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Sandstone
Arenite
Sandstone (Quartzose Sandstone)
Arenite (primarily SiO2)
Chert (Tan/Yellow variety)
Microcrystalline quartz (SiO2)
Limestone
Calcium Carbonate (CaCO3)
Limestone (specifically Travertine or Tufa)
Calcium Carbonate (CaCO3)
Sandstone (with potential mineral inclusions)
Clastic sedimentary rock (primarily Quartz, SiO2)
Sandstone (likely Fossiliferous)
Arenite / Sedimentum arenaceum
Quartz Geode
Silicon Dioxide (SiO2) in Host Rock
Orange Calcite
Calcium Carbonate (CaCO3)
Jasper (Iron-rich)
Silicon Dioxide (SiO2) with Fe2O3 (Hematite) impurities
Red Jasper (Polished)
Jasper (Iron-rich Microcrystalline Quartz, SiO2)
Geode (Chert or Quartz Nodule)
Silicon Dioxide (SiO2)
Chert (Chert Nodule with Chalky Cortex)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Halite (Rock Salt)
Halite (Sodium Chloride, NaCl)
Orange Calcite (Cleavage Rhomb)
Calcite (Calcium Carbonate, CaCO3)
Fluorite, Turquoise, and Calcite set
Calcium Fluoride (CaF2), Hydrous Phosphate of Copper and Aluminum (CuAl6(PO4)4(OH)8·4H2O), Calcium Carbonate (CaCO3)
Manganese Ore (Psilomelane/Pyrolusite)
Psilomelane ((Ba,H2O)2Mn5O10) and Pyrolusite (MnO2)
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Green Opal
Hydrated Silica (SiO2·nH2O)
Jasper, Agate, Quartz Mix (Polished Beads)
SiO₂ (Silicon Dioxide) for Quartz. Jasper and Agate are cryptocrystalline varieties of Quartz.
Fossiliferous Limestone with Brachiopod
Phylum Brachiopoda in calcitic matrix
Red Jasper
Silicon Dioxide (SiO2) with Iron impurities
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
Sandstone (likely Calcareous or Micaceous)
Clastic sedimentary rock (primarily Quartz with Cementing Agents)
Sandstone (with ripple marks)
Arenite / Quartz Sandstone
Shale or Argillite
Shale (sedimentary) / Argillite (metamorphic)
Sandstone (likely Arkosic or Lithic Sandstone)
Arenite (SiO2 based with mineral inclusions)
Limestone Pebble
Sedimentary Calcium Carbonate (CaCO3)
Knightia Fossil in Limestone
Knightia eocaena in micritic limestone
Sandstone
Arenite
Sandstone
Arenite (composed primarily of SiO2)
Sandstone
Arenite (composed primarily of SiO2)