Mineral Within Sedimentary Rock

Browse mineral within sedimentary rock specimens identified by the Rock Identifier community.

Thunderegg (Agetized Geode nodule)

Rhyolitic Agate Nodule (SiO2 filling volcanic cavities)

igneous

Sandstone

Arenite (SiO2 principal)

sedimentary

Quartzite (specifically an iron-stained or Carnelian-colored variety)

Silicon Dioxide (SiO2) with iron oxide inclusions

metamorphic

Jasper with Quartz Veining

Silicon Dioxide (SiO2) - Opaque cryptocrystalline variety of Quartz

sedimentary

Biotite Schist

Metamorphic

Sandstone (Ferruginous)

Arenite (Fe-rich)

sedimentary

Fluorite (Rainbow Fluorite)

Calcium Fluoride (CaF2)

mineral

Turquoise

CuAl6(PO4)4(OH)8·4H2O (Hydrated copper and aluminium phosphate)

mineral

Biotite Mica

Biotite (K(Mg,Fe)3AlSi3O10(F,OH)2)

mineral

Chert (specifically Tan Chert)

Chert (SiO2)

sedimentary

Septarian Nodule (Dragon Stone)

Septarian concretion (composition: CaCO3 - Calcite, Aragonite, and Siderite/Limestone)

sedimentary

Siderite Concretion (Nodule)

Iron Carbonate (FeCO3) Concretion

sedimentary

Chert (Jasper/Flint variant)

Silicon Dioxide (SiO2)

sedimentary

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

mineral

Sandstone Beach Pebble

Clastic Sedimentary Rock (primarily Quartz with Iron Oxide coating)

sedimentary

Pink Opal

Amorphous Hydrous Silica (SiO2·nH2O)

mineral

Red Jasper

Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions

sedimentary

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

mineral

Quartz (specifically Clear Quartz or Rock Crystal)

Silicon Dioxide (SiO2)

mineral

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

mineral

Carnelian

Carnelian Chalcedony (SiO2 with iron oxide impurities)

mineral

Dyed Agate

Silicon Dioxide (SiO2)

mineral

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

mineral

Limonitic Sandstone (Stained Sandstone)

Clastic Sedimentary Rock with Iron Oxide (Limonite/Goethite) staining

sedimentary

Healer's Gold (Pyrite and Magnetite in Schist)

Magnetite (Fe3O4) and Pyrite (FeS2) in Mica Schist

metamorphic

Galena

Lead(II) sulfide (PbS)

mineral

Almandine Garnet

Almandine (Fe3Al2Si3O12)

mineral

Sandstone (Ferruginous)

Arenite (Fe-rich SiO2)

sedimentary

Ironstone Concretion (Pot Stone)

Siderite or Limonite Concretion (FeCO3 or FeO(OH)·nH2O)

sedimentary

Carnelian Agate

Silicon Dioxide (SiO2) - variety of Chalcedony

mineral

Puddingstone

Conglomerate (specifically a type of jasper conglomerate or quartz conglomerate)

Sedimentary

Oolitic Limestone

Oolite (Sedimentary rock composed of CaCO3)

sedimentary

Sandstone

Arenite (primarily SiO2)

sedimentary

Brachiopod Fossil in Limestone

Phylum Brachiopoda, Class Rhynchonellata

sedimentary

Tree Agate

Silicon Dioxide (SiO2) - Dendritic Agate/Chalcedony

sedimentary

Chert (Flint)

Chert (Microcrystalline Quartz, SiO2)

sedimentary

Sandstone (Ferruginous)

Arenite (composed primarily of SiO2 with Fe2O3 cement)

sedimentary

Dalmatian Stone (Dalmatian Jasper)

Peralkaline Quartz-Feldspar Rock with Arfvedsonite

igneous

Sandstone (with Iron Staining)

Clastic Sedimentary Rock (primarily SiO2 with Fe2O3 oxides)

sedimentary

Chalcedony (Agate)

Silicon Dioxide (SiO2)

mineral

Almandine Garnet in Matrix

Almandine (Fe3Al2(SiO4)3)

metamorphic

Quartz (Milky/Crystal Variety)

Silicon Dioxide (SiO2)

mineral