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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Jasper
Silicon dioxide (SiO2)
sedimentary
Red Sandstone (Siltstone pebble)
Arenite / Siltstone (Silicon dioxide based with hematite impurities)
sedimentary
Tumbled Agate
Silicon Dioxide (SiO2)
mineral
Limonite (Iron Ore)
Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Jasper
Microcrystalline quartz (SiO2)
sedimentary
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Epidote
Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
mineral
Sandstone with Quartz Vein
Quartz-veined Arenite (SiO2 in detrital quartz matrix)
sedimentary
Jasper
Silicon dioxide (SiO2) with impurities
mineral
Barite
Barium Sulfate (BaSO4)
mineral
Jasper
Microcrystalline Quartz (SiO2)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Iron-Stained Quartz
Silicon Dioxide (SiO2) with Iron Oxide impurities
mineral
Jasper
Silicon Dioxide (Quartz variety, SiO2)
mineral
Pyrite (Fool's Gold) in Matrix
Iron Sulfide (FeS2)
mineral
Marine invertebrate fossils (Brachiopods and Gastropods)
Phylum Brachiopoda and Class Gastropoda
fossil
Pyrite
Iron Pyrite (FeS2)
mineral
Limonite and Goethite
Limonite (hydrated iron(III) oxide-hydroxide) and Goethite (α-FeO(OH))
mineral
Chalcedony (Quartz Var.)
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Quartz Geode
Silicon Dioxide (SiO2) within a geode
mineral
Banded gneiss pebble
Gneiss, likely quartz–feldspar–biotite gneiss
metamorphic
Pyrite
Iron Sulfide (FeS2)
mineral
Fossilized Shark Tooth
Selachimorpha fossil
fossil
Glauconitic Sandstone
Glauconitic Sandstone (complex silicate formula: (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2)
sedimentary
Chert (Chalcedony / Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Amber
Succinate (Fossilized Tree Resin)
mineraloid
Pyrite
Iron Sulfide (FeS2)
mineral
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Jasper (var. Ocean or Polychrome Jasper)
Silicon Dioxide (SiO2) with iron and mineral inclusions
sedimentary
Chert (River Pebble)
Microcrystalline Quartz (SiO2)
sedimentary
Fossilized tooth or tooth fragment
Indeterminate vertebrate tooth; possibly a fossil shark tooth (Carcharodon/Carcharocles)
fossil
Carnelian
Silicon Dioxide (Quartz variety, SiO2)
mineral
Tumbled jasper (likely red/brown jasper)
Jasper, an opaque, microcrystalline variety of quartz (SiO₂), colored by iron oxides
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Red Jasper
Silicon Dioxide (Quartz variety), SiO2
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Red Howlite (Dyed)
Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5) with Red Dye
mineral
Chalcopyrite
CuFeS2 (Copper Iron Sulfide)
mineral