Rhodochrosite
Manganese carbonate (MnCO3)
mineral
Category
Sedimentary (Fossilized)
Browse sedimentary (fossilized) specimens identified by the Rock Identifier community.
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Yellow Jasper
Silicon Dioxide (SiO2)
sedimentary
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Carnelian
Carnelian (SiO2)
mineral
Marble
Recrystallized Calcite (CaCO3) / Marble
metamorphic
Pyrite
Iron Sulfide (FeS2)
mineral
Barite (Desert Rose or Cockscomb variety)
Barium Sulfate (BaSO4)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Clear Quartz (Carved Merkaba)
Silicon Dioxide (SiO2)
mineral
Orpiment
Orpiment (As2S3)
mineral
Chalcedony (Common Agate pebble)
Silicon Dioxide (SiO2)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Chert (Flint)
Chert (SiO2)
sedimentary
Blue Chalcedony
Silicon Dioxide (SiO2)
mineral
Carnelian
SiO2 (Chalcedony with iron oxide impurities)
mineral
Quartz (Milk Quartz / Massive Quartz)
Silicon Dioxide (SiO2)
mineral
Chert (Nodule)
Cryptocrystalline Quartz (SiO2)
sedimentary
Flint
Chert (Silicon dioxide, SiO2)
sedimentary
Gold
Native Gold (Au)
mineral
Chert (Chalcedony/Agate variety)
Silicon Dioxide (SiO2)
sedimentary
Garnet (specifically Almandine)
Almandine (Fe3Al2(SiO4)3)
mineral
Chalcedony (Moonstone-like Agate)
Silicon Dioxide (SiO₂)
mineral
Kyanite in Quartz
Kyanite (Al2SiO5) with Quartz (SiO2)
metamorphic
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
mineral
Green Kyanite
Kyanite (Al2SiO5)
mineral
Yellow Aventurine
Silicon Dioxide with inclusions (SiO2 + Muscovite/Fuchsite)
mineral
Quartz (Milky/Crystal Variety)
Silicon Dioxide (SiO2)
mineral
Chert (Arrowhead variety)
Chert (SiO2)
sedimentary
Blue Kyanite in Quartz
Kyanite (Al2SiO5)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Gneiss
Gneiss
metamorphic
Travertine
Calcareous Tufa / Travertine (CaCO3)
sedimentary
Chalcedony / Agate
Silicon Dioxide (SiO2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Caribbean Calcite
Calcium Carbonate (CaCO3) with Aragonite (CaCO3)
sedimentary
Quartz / Milky Quartz
Silicon Dioxide (SiO2)
mineral
Turquoise
CuAl6(PO4)4(OH)8·4H2O
mineral
Quartz Geode Fragment
Silicon Dioxide (SiO2)
mineral
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral