Calcite
Calcium Carbonate (CaCO3)
mineral
Category
Sedimentary (Primary) With Artificial Modification
Browse sedimentary (primary) with artificial modification specimens identified by the Rock Identifier community.
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Hematite (Tumbled)
Iron(III) oxide (Fe2O3)
mineral
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Lepidodendron fossil (Scale Tree Bark)
Lepidodendron (Lycophytina class)
sedimentary
Sandstone (Ferruginous)
Arenite (composed primarily of SiO2 with Fe2O3 cement)
sedimentary
Bismuth
Bismuth (Bi)
mineral
Fossiliferous Shale
Carbonaceous Shale (with potential plant/aquatic fossils)
sedimentary
Blue Chalcedony (likely dyed)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Iron Oxide inclusions
sedimentary
Blue Dyed Agate Geode Slice
Chalcedony (Silicon Dioxide, SiO2) with artificial cobalt/iron-based dye
mineral
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Pyrite in Matrix (often with Chalcopyrite)
Iron Sulfide (FeS2) / Copper Iron Sulfide (CuFeS2)
mineral
Limonite (Iron Ore)
Limonite (Hydrous iron(III) oxide-hydroxide mixture, FeO(OH)·nH2O)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Quartz Vein in Host Rock (Likely Slate or Shale)
Hydrothermal Quartz (SiO2) in Pelitic host rock
metamorphic
Columnar Calcite / Satin Spar
Calcite (Calcium Carbonate, CaCO3)
mineral
Water and Silt (Sedimentary Environment)
Suspended Sediment / H2O (dihydrogen monoxide)
sedimentary
Honey Calcite
Calcium Carbonate (CaCO3)
mineral
Galena
Lead(II) sulfide (PbS)
mineral
Red Sandstone
Clastic sedimentary rock (primarily SiO2 with Fe2O3)
sedimentary
Orange Calcite
Calcite (Calcium Carbonate - CaCO3)
mineral
Concrete with Exposed Aggregate
Anthropogenic conglomerate (Concrete)
man-made rock (sedimentary analogue)
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Limestone
Calcite-rich sedimentary rock (CaCO3)
sedimentary
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Quartz pebble
Silicon dioxide (SiO2)
mineral
Cinnabar in Matrix
Cinnabar (Mercury(II) sulfide, HgS)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrous ferric oxide)
mineral
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Yellow Chert (River Stone)
Chert (SiO2)
sedimentary
Fossiliferous Limestone
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Banded Iron Formation (BIF)
Banded Iron Formation (predominantly Hematite and Chert)
sedimentary
Banded Iron Formation (BIF)
Banded Iron Formation (BIF)
sedimentary
Fossiliferous Limestone
Calcium Carbonate (CaCO3) with Bioclastic inclusions
sedimentary
Banded Iron Formation (BIF)
Banded Iron Formation (Magnetite-Hematite-Chert)
sedimentary
Mookaite Jasper
Silicified Radiolarite (SiO2)
sedimentary
Banded Iron Formation (BIF)
Banded Iron Formation (predominantly Hematite Fe2O3 and magnetite Fe3O4 alternating with Chert SiO2)
sedimentary
Sandstone Concretion
Moqui Marble / Iron-oxide Concretion (SiO2 with Hematite/Goethite)
sedimentary
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral