Sandstone (Ferruginous)
Arenite (SiO2 with Iron Oxide impurities)
sedimentary
Category
Sedimentary (Processed Mineral Product)
Browse sedimentary (processed mineral product) specimens identified by the Rock Identifier community.
River Pebble (Brecciated Chert/Siltstone)
Silicon Dioxide (SiO2) with mineral inclusions
sedimentary
Black Jasper
Black Jasper (Silicate mineral - SiO2)
sedimentary
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Glauconitic Sandstone
Glauconitic Sandstone (complex silicate formula: (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2)
sedimentary
Precious Opal in Matrix
Hydrated Silica (SiO2·nH2O)
mineral
Schist
Mica Schist
metamorphic
Sandstone (Quartz-rich)
Arenite (SiO2 based clastic rock)
sedimentary
Marble
Recrystallized Calcite (CaCO3) or Dolomite (CaMg(CO3)2)
metamorphic
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Quartz Geode (Cracked)
Quartz (Silicon Dioxide, SiO2)
sedimentary
Selenite (Gypsum Variety)
Hydrous Calcium Sulfate (CaSO4·2H2O)
mineral
Celestite (Celestine)
Strontium sulfate (SrSO4)
Mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Banded Agate (specifically Carnelian Agate)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Satin Spar (Selenite)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
Variscite in Matrix
Variscite (AlPO4 · 2H2O)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Jasper
Cryptocrystalline Quartz (SiO2)
sedimentary
Pyrite
Iron Disulfide (FeS2)
mineral
Marble
Metamorphosed Limestone (calcite formulation CaCO3)
metamorphic
Pyrite
Iron Pyrite (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Carnelian
SiO2 (Silicon Dioxide), a variety of Chalcedony
mineral
Pyrite (on host rock/ore)
Iron Sulfide (FeS2)
mineral
Satin Spar Selenite
Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite (Fool's Gold) Ore
Iron Disulfide (FeS2)
mineral
Yellow Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Agate (Chert/Chalcedony)
Silicon Dioxide (SiO2)
mineral
Plume Agate
Silicon Dioxide (SiO2)
mineral
Selenite (Satin Spar Gypsum)
Calcium Sulfate Dihydrate (CaSO4·2H2O)
mineral
Carnelian Agate
Silicon Dioxide (SiO2) with iron oxide impurities
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Pyrite in Limestone
Iron Sulfide (FeS2) in Calcium Carbonate (CaCO3)
mineral