Mineral Within A Sedimentary Rock

Sandstone (Ferruginous)

Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)

Mica Schist

Mica Schist (primarily Muscovite and Biotite composition)

Chert (Septarian Concretion/Nodule)

Microcrystalline silica (SiO2) with carbonate mineral veining

Hag Stone (Adder Stone / Geode-bearing Pebble)

Sedimentary Rock with Cavity (often Quartzite, Limestone, or Sandstone)

Quartz Druze on Matrix

Silicon Dioxide (SiO2)

Gneiss (High-grade Metamorphic Rock)

Gneiss (Metamorphic silicate rock)

Pyrite Geode (Sparkling Druzy)

Iron Sulfide (FeS2) in Sedimentary Nodule

Sandstone (Ferruginous Concretion)

Ferruginous Sandstone Concretion / SiO2 with Fe2O3 cement

Yellow Chert or Jasper

Silicon Dioxide (SiO2)

Gneiss Pebble

Gneiss (Metamorphic Foliated Rock)

Septarian Nodule or Concretion

Calcareous concretion with argillaceous and sideritic components

Dalmatian Jasper

Peralkaline Quartz Feldspar Porphyry

Gneiss with Quartz Veining

Gneiss (High-grade Regional Metamorphic Rock)

Sandstone (Pebble)

Arenite (primarily SiO2)

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Turquoise

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

Turquoise

Turquoise, CuAl6(PO4)4(OH)8·4H2O

Turquoise

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

Limonite Concretion

Limonite (Hydrated iron(III) oxide-hydroxides, FeO(OH)·nH2O)

Fossiliferous Limestone

Biogenic Sedimentary Rock (CaCO3)

Quartz Geode

Silicon Dioxide (SiO2)

Ironstone Concretion

Ironstone (Siderite/Limonite/Goethite)

Raw Agate (Chalcedony Nodule)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Sandstone (Quartzose)

Arenite (composed primarily of SiO2)

Limonite stained Sandstone

Sedimentary rock with Goethite/Limonite (FeO(OH)·nH2O)

Quartz (Milky/Smoky variety on matrix)

Silicon Dioxide (SiO2)

Quartz Druzy (on Calcedony/Quartz base)

Silicon Dioxide (SiO2)

Quartz Geode

Silicon Dioxide (SiO2)

Sandstone (specifically an Iron-Concretion)

Arenite with Iron Oxide (Limonite/Goethite) cementation

Mookaite Jasper

Silicified Radiolarite (SiO2)

Chert (Banded)

Microcrystalline Quartz (SiO2)

Chert (Brown variety / Common Jasper)

Microcrystalline Quartz (SiO2)

Quartz (Herkimer Diamond variant)

Silicon Dioxide (SiO2)

Chalcedony (Botryoidal/Agate nodule)

Microcrystalline Quartz (SiO2)

Pyrite in Slate or Shale

Iron Sulfide (FeS2) in Argillaceous Matrix

Chert (Jasper/Flint variety)

Microcrystalline Quartz (SiO2)

Chert Pebble with Quartz Veins

Microcrystalline Quartz (SiO2)

Chert (specifically Agate/Jasper variety)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Chert / Flint (Yellow Jasper Variant)

Microcrystalline Quartz (SiO2 with Iron Oxide impurities)

Ironstone concretion

Siderite or Limonite-rich Concretion (FeO(OH)·nH2O)

Moqui Marble (Iron Oxide Concretion)

Iron Oxide Concretion (primarily Limonite/Hematite around a Sandstone center)