Ironstone (Limonite/Hematite concretion)
Ferruginous Siltstone / Goethite (FeO(OH))
sedimentary
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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Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Jasper
Silicon Dioxide (Microcrystalline Quartz, SiO2)
mineral
River Rock
Mixed composition, often quartzite, sandstone, or basalt
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Jasper
Silicon Dioxide (SiO2)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
mineral
Carnelian
Silicon Dioxide (Chalcedony variety), SiO2
mineral
Sandstone (Quartzose)
Arenite (composed primarily of SiO2)
sedimentary
Ocean Jasper
Orbicular Jasper (Silicon Dioxide, SiO2)
sedimentary
Limonite (Iron Ore)
Limonite (unstructured hydrated iron(III) oxide-hydroxides, often FeO(OH)·nH2O)
mineral
Blue Apatite
Apatite (Group), Ca5(PO4)3(F,Cl,OH)
mineral
Dendritic Agate (Blue Chalcedony)
Silicon Dioxide (SiO2)
sedimentary
Aragonite Star Cluster
Aragonite (CaCO3)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Banded Jasper
Silicate Mineral (Microcrystalline Quartz / SiO2)
sedimentary
Rugose Coral Fossil
Rugosa (Order) / Horn Coral
fossil
Quartz (Jasper / Chert)
Silicon Dioxide (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Magnetite / Iron Ore
Magnetite (Fe3O4)
mineral
Fossil Shark Tooth
Chondrichthyes (Class)
fossil
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Leopard Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Travertine
Travertine (CaCO3)
sedimentary
Green Calcite (Onyx Marble)
Calcium Carbonate (CaCO3)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Native Silver Nugget
Silver (Ag)
mineral
Citrine
Silicon Dioxide (Quartz variety), SiO2
mineral
Glauconitic Sandstone
Glauconitic Sandstone (Greensand)
sedimentary
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Halite (Rock Salt)
Halite (NaCl)
mineral
Common Opal
Hydrated amorphous silica (SiO2·nH2O)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Pebble / Sandstone / Siltstone
Sedimentary Rock (Quartz Sandstone / Siltstone)
sedimentary
Yellow Chalcedony
Silicon Dioxide (SiO2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Crinoid Stem Fossil
Crinoidea
fossil
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Fluorite
Fluoride (Calcium Fluoride - CaF2)
mineral
Vein Quartz in Host Rock
Silicon Dioxide (SiO2) vein in sedimentary/metamorphic matrix
mineral