Limonite (Iron Ore)
Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)
Category
Browse man made composite (lithified equivalent of sedimentary) specimens identified by the Rock Identifier community.
Limonite (Iron Ore)
Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)
Chalcedony (River Stone)
Microcrystalline Quartz (SiO2)
Amber
Succinite (approximate formula C10H16O)
Fluorite
Fluorite (Calcium Fluoride, CaF2)
Picture Jasper
Silicon Dioxide (SiO2) with iron oxide and organic impurities
Marble
Recrystallized Calcite (CaCO3)
White Quartz
Silicon Dioxide (SiO2)
Red Jasper
Silicon dioxide (SiO2) with iron oxide inclusions
Shiva Lingam
Cryptocrystalline Quartz (Jasproid/Chalcedony mix)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Pyrite
Iron Sulfide (FeS2)
Pyrite
Iron Sulfide (FeS2)
Jasper
Silicon Dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Yellow Calcite
Calcium Carbonate (CaCO3)
Green Calcite
Calcium Carbonate (CaCO3)
Tree Agate
Silicon Dioxide (SiO2) with dendritic inclusions
Dendritic Agate / Moss Agate
Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions
Kyanite (Blue or Blue-Grey)
Kyanite (Al2SiO5)
Dendritic Agate
Silicon Dioxide (SiO2) with manganese/iron inclusions
Sandstone
Arenite (primarily SiO2 - Silicon Dioxide)
Sandstone (Quartzose Sandstone)
Arenite (SiO2)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Green Kyanite
Kyanite (Al2SiO5)
Manganese Ore (Psilomelane/Pyrolusite)
Psilomelane ((Ba,H2O)2Mn5O10) and Pyrolusite (MnO2)
Red Sandstone
Clastic Terrigenous Sedimentary Rock (typically Hematitic Quartz Arenite or Arkose)
Dendritic Agate (River Pebble)
Silicon Dioxide (SiO2) with Manganese or Iron oxide inclusions
Moss Agate
Silicon Dioxide (SiO2) with inclusions of Manganese or Iron oxides
Jasper with Hematite Inclusions
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3)
Chert / Flint
Silicon Dioxide (SiO2)
Orpiment
Orpiment (As2S3)
Clear Quartz (Carved Merkaba)
Silicon Dioxide (SiO2)
Chalcedony
Chalcedony (SiO2)
Jasper with Iron Staining
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Limestone with Chert or Siltstone bands
Sedimentary carbonate rock (CaCO3) often with siliceous impurities
Smoky Quartz and Biotite Schist
Quartz-Biotite Schist (SiO2 + K(Mg,Fe)3AlSi3O10(F,OH)2)
Jasper with Hematite inclusions
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3)
Coquina
Biogenic Limestone (Coquina)
Picture Jasper
Silicon Dioxide (SiO2)
Banded Chert (Agate-like Flint)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Agate (translucent pebble)
Silicon dioxide (SiO2) - Microcrystalline Quartz
Sandstone with Algae Growth
Arenite with Chlorophyta/Lichen