Limonite (Iron Ore)
Limonite (Hydrous iron(III) oxide-hydroxide mixture, primarily FeO(OH)·nH2O)
Category
Browse sedimentary (primary) with artificial modification specimens identified by the Rock Identifier community.
Limonite (Iron Ore)
Limonite (Hydrous iron(III) oxide-hydroxide mixture, primarily FeO(OH)·nH2O)
Bauxite
Bauxite (Al(OH)3, AlO(OH))
Orange Calcite
Calcium Carbonate (CaCO3)
Flint (Chert)
Silicon Dioxide (SiO2)
Aragonite Star Cluster
Aragonite (Calcium Carbonate, CaCO3)
Geode with Quartz/Chalcedony
Silicon Dioxide (SiO2)
Chert
Microcrystalline Quartz (SiO2)
Chert (Flint variety)
Chert (Cryptocrystalline Quartz, SiO2)
Limestone
Sedimentary Calcium Carbonate (CaCO3)
Sandstone (Ferruginous)
Arenite with Iron Oxide matrix
Asphalt (Bituminous Pavement)
Bituminous mix (Aggregates with Bitumen binder)
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
White Agate (resembling Bone Chalcedony)
Cryptocrystalline Quartz (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Magnetite / Iron Ore
Magnetite (Fe3O4)
Hematite
Iron(III) oxide (Fe2O3)
Bauxite (Pisolitic Bauxite)
Bauxite (mixture of Hydrous Aluminum Oxides)
Limestone
Calcium Carbonate (CaCO3)
Chert (Flint)
Chert (SiO2)
Banded Iron Formation
Banded Iron Formation (BIF)
Limestone with Calcite Veins
Sedimentary Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Chert / Flint
Silicon Dioxide (SiO2)
Chert (Common Opal variant)
Microcrystalline Quartz (SiO2)
Chert (Jasper)
Silicon Dioxide (SiO2)
Chert (Flint)
Chert (Microcrystalline Quartz, SiO2)
Glauconitic Sandstone
Glauconitic Sandstone (contains (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2)
Chert (Chert Nodule)
Microcrystalline quartz (SiO2)
Chert (Nodule)
Microcrystalline Quartz (SiO2)
Sandstone
Arenite (SiO2 principal component)
Calcite
Calcium Carbonate (CaCO3)
Crushed Limestone
Calcium Carbonate (CaCO3)
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily Quartz with Fe2O3 staining)
Limestone
Calcium Carbonate (CaCO3)
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily SiO2 with Fe2O3 oxides)
Limonitic Iron Ore / Goethite
Hydrated Iron(III) oxide-hydroxide (primarily FeO(OH)·nH2O)
Limestone
Limestone (Calcium Carbonate - CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Crushed Limestone (Gravel)
Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Limestone (with potential fossil inclusions)
Calcium Carbonate (CaCO3)
Limestone (Brecciated/Recrystallized)
Calcium Carbonate (CaCO3)