Hag Stone
Perforated Sedimentary Rock (typically Limestone or Sandstone)
Category
Browse man made rock (sedimentary analogue) specimens identified by the Rock Identifier community.
Hag Stone
Perforated Sedimentary Rock (typically Limestone or Sandstone)
Anthracite Coal
Anthracite (Carbon-rich metamorphic sedimentary rock)
Sandstone Concretion
Sandstone (Sedimentary Rock) with silica or calcite cement
Mookaite Jasper
Siliceous (chert) sedimentary rock, a form of Jasper
Ironstone (Limonitic Shale)
Ferruginous Siltstone / Goethite-rich Sedimentary Rock
Quartz Druze on Matrix
Silicon Dioxide (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Sandstone (Banded)
Clastic Sedimentary Rock (primarily SiO2 with Iron Oxide staining)
Sandstone
Arenite (SiO2 primarily)
Laterite (Iron-rich bauxite or Gossan)
Ferricrete (Fe2O3·nH2O)
Sandstone
Arenite (SiO2 predominantly)
Turquoise
CuAl6(PO4)4(OH)8·4H2O
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Bauxite
Bauxite (Mixture of Hydrous Aluminum Oxides)
Agate
Silicon dioxide (SiO2) - Microcrystalline Quartz
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Sandstone
Arenite or Sandstone
Hag Stone (Sandstone with Boreholes)
Bored Sandstone (Sedimentary rock with lithophaga-style borings)
Chert (Jasper/Flint Pebble)
Microcrystalline quartz (SiO2)
Garnet (Almandine)
Almandine, Fe3Al2(SiO4)3
Gneiss
Gneiss (High-grade Metamorphic Rock)
Mica Schist
Foliated Metamorphic Rock (Schist)
Banded Iron Formation
Banded Iron Formation (BIF)
Red Jasper
Silicon Dioxide (SiO2)
Limonite Concretion
Goethite-rich Concretion (FeO(OH))
Chert Nodule (Flint)
Chert (Cryptocrystalline Silica - SiO2)
Fossilized Bone Fragment
Permineralized Vertebrate Fossil (Hydroxyapatite replaced by Minerals)
Jasper (Chocolate or Brown Jasper)
Silicon Dioxide (SiO2)
Travertine
Travertine (CaCO3 - Calcium Carbonate)
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
Red Jasper
Silicon Dioxide with Iron Oxide (SiO2)
Quartz (on matrix)
Quartz (Silicon Dioxide, SiO₂)
Sandstone
Arenite
Gneiss
Gneiss (Metamorphic rock)
Gneiss
Gneiss
Pyrite in Matrix (Quartz/Schist)
Iron Sulfide (FeS2)
Garnet Gneiss
Gneiss containing almandine-pyrope garnet
Clear Quartz (Druzy)
Crystalline Silicon Dioxide (SiO2)
Granitic Gneiss
Gneiss (Metamorphic rock of granitic composition)
Garnet-Bearing Gneiss
Almandine-Garnet Gneiss