Fluorite
Calcium Fluoride (CaF2)
mineral
Category
Mineral, Often Found In Sedimentary Deposits
Browse mineral, often found in sedimentary deposits specimens identified by the Rock Identifier community.
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Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Pink Quartz / Rose Quartz
Silicon Dioxide (SiO2)
mineral
Galena
Lead(II) sulfide (PbS)
mineral
Aragonite Star Cluster
Aragonite (CaCO3)
mineral
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Jasper
Silicon dioxide (SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral
Fossilized Shark Tooth (Otodus obliquus)
Otodus obliquus (Mineral: Fluorapatite)
mineral
Yellow Chalcedony
Silicon Dioxide (SiO2)
mineral
Jasper
Silicon Dioxide (Microcrystalline Quartz, SiO2)
sedimentary
Yellow Jasper
Chalcedony (SiO2) with iron oxide inclusions
mineral
Yellow Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Fossilized bone, likely a tooth or jaw fragment
Mineralized vertebrate bone; taxonomic identification requires clearer diagnostic anatomy
fossil
Hematite
Hematite (Fe2O3)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Yellow or Honey Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone / Weathered Chert
Silicon Dioxide (SiO2) / Quartz-rich Clastic Rock
sedimentary
Sandstone
Arenite (SiO2 primarily)
sedimentary
Quartz Geode
Crystalline Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Pyrite (FeS2)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Fluorite Tower
Fluorite (Calcium Fluoride - CaF2)
mineral
Tiger's Eye
SiO2 (Silicon Dioxide)
metamorphic
Rhodochrosite
Manganese Carbonate (MnCO3)
mineral
Tiger Carving (Banded Onyx or Calcite)
Banded Calcite (CaCO3)
sedimentary
Selenite (Satin Spar)
Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)
mineral
Iron Ore (Limonite and Hematite)
Goethite/Limonite (FeO(OH)·nH2O) and Hematite (Fe2O3)
mineral
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Chert (Jasper)
Cryptocrystalline Silicon Dioxide (SiO2)
sedimentary
Turtle Stone / Septarian Nodule (Fragment)
Septarian Concretion (Calcite, Aragonite, and Limestone)
sedimentary
Banded Sandstone
Arenite (with iron oxide banding)
sedimentary
Satin Spar (often sold as Selenite)
Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)
mineral
Wonderstone Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Yellow Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Banded Calcite (often sold as Caribbean Calcite or Mexican Onyx)
Calcium Carbonate (CaCO3)
mineral
Quartz Geode Fragment
Crystalline Silicon Dioxide (SiO2)
mineral