Magnetite Orthorthotropic Rock
Magnetite (Fe3O4)
Category
Browse sedimentary (artificial) specimens identified by the Rock Identifier community.
Magnetite Orthorthotropic Rock
Magnetite (Fe3O4)
Carnelian Agate
Chalcedony (SiO2) with iron oxide inclusions
Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
Chert Nodule
Microcrystalline Quartz (SiO2)
Limonite Concretion
Limonite (Hydrated Iron Oxide) FeO(OH)·nH2O
Seashell Fragment (Aragonite/Calcite)
Calcium Carbonate (CaCO3) - Shell fragment
Gneiss
Gneiss (High-grade metamorphic rock)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Pyrite
Iron Sulfide (FeS2)
Quartz
Silicon Dioxide (SiO2)
Green Calcite
Calcium Carbonate (CaCO3)
Orange Calcite
Calcium Carbonate (CaCO3)
Geode or Concretion
Silica-based Concretion / Quartz Geode
Blue Calcite
Calcium Carbonate (CaCO3)
Ironstone Concretion (Coprolite-like)
Goethite/Hematite Siderite Spheroid (FeCO3 or FeO(OH))
Quartz on Limestone
Silicon Dioxide (SiO2) on Calcium Carbonate (CaCO3)
Chert Nodule (Flint)
Silicon Dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Carnelian Agate
Carnelian (Chalcedony / Silicon Dioxide SiO2)
Quartz (Small Fragment)
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Zebra Jasper
Silicon Dioxide (SiO2) with inclusions
Yellow Jasper
Silicon Dioxide (SiO2) with hydrated iron oxide impurities (Goethite)
Botryoidal Lace Agate
Agate (Silicon Dioxide, SiO2)
Tumbled Stone Collection (Fluorite, Sodalite, Moss Agate, Amethyst/Charoite, and Grey Agate)
Silica (SiO2) and Calcium Fluoride (CaF2) based minerals
Ocean Jasper (Orbicular Jasper)
Silicon Dioxide (SiO2) with iron and other mineral inclusions
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
Magnetite
Magnetite (Iron(II,III) oxide, Fe3O4)
Yellow Chert (Chert/Jasper)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Chert (Flint nodule)
Silicon Dioxide (SiO2)
Calcite
Calcium Carbonate (CaCO3)
Chert (Iron-stained)
Chert (Silicon Dioxide, SiO2)
Chert (Flint)
Chert (SiO2)
Chert (specifically Flint or Jasper variant)
Microcrystalline quartz (SiO2)
Marcasite Concretion (Propeller/Sand Dollar shape)
Marcasite (FeS2)
River Jasper (Chert/Chalcedony)
Silicon Dioxide (SiO2) with iron oxide impurities
Gneiss with Quartz Vein
Gneiss containing Quartz (SiO2) filler
Druzy Quartz (on Chalcedony/Agate base)
Silicon Dioxide (SiO2)
Optical Calcite
Calcite (Calcium Carbonate, CaCO3)
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities