Mineral On Sedimentary

Picture Jasper

Silicon Dioxide (SiO2) with iron oxide and mineral impurities

Aragonite Star Cluster

Aragonite (Calcium Carbonate, CaCO3)

Quartz Vein in Host Rock (Likely Slate or Shale)

Hydrothermal Quartz (SiO2) in Pelitic host rock

Banded Calcite or Travertine

Calcium Carbonate (CaCO3)

Conglomerate

Conglomerate (clastic sedimentary rock)

Green Calcite

Calcite (CaCO3)

Banded Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Jasper (Brown Iron-Rich Variety)

Silicon Dioxide (SiO2) with Fe2O3 (Iron Oxide/Crystalline Quartz)

Yellow Jasper

Silicon Dioxide (SiO2) with iron hydroxides (Goethite/Limonite)

Jasper (likely river-worn)

Silicon Dioxide (SiO2)

Zebra Jasper

Tumbled Opaque Chalcedony (SiO2)

Fancy Jasper (Multicolor Agate/Jasper)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Sandstone (with Iron Staining)

Arenite (composed primarily of SiO2 with Fe2O3 staining)

Concretion or Geode (unbroken)

Varied (depending on mineral composition and cementing agent). For quartz-lined geodes, the scientific name of the dominant mineral would be Quartz (SiO2). For calcite-lined geodes, Calcite (CaCO3). Concretions are often composed of cryptocrystalline quartz (chert), calcite, or iron oxides.

Red Jasper

Jasper (Silicon Dioxide, SiO2 with Fe2O3 inclusions)

Chert Breccia

Brecciated Chert (Microcrystalline Silica)

Sandstone (Red Flagstone)

Clastic sedimentary rock (primarily Quartz - SiO2)

Geode (Unopened)

Silica-lined Vug (primarily SiO2)

Mixed Quartz Bracelet (Rose Quartz and Larimar-colored beads)

Silicon Dioxide (SiO2) with various inclusions

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Kambaba Jasper

Stromatolite (Fossilized Algae within Microcrystalline Quartz)

Ocean Jasper (Orbicular Jasper)

Silicon Dioxide (SiO2) with iron and other impurities

Jasper

Jasper (Silicon Dioxide, SiO2)

Sandstone

Arenite (SiO2 principal)

Red Jasper

Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)

Banded Calcite (often sold as 'Green Onyx')

Calcite (Calcium Carbonate, CaCO3)

Yellow Jasper

Tectosilicates (SiO2) with Goethite/Iron oxide inclusions

Banded Calcite (Mexican Onyx)

Calcium Carbonate (CaCO3)

Quartz (pebble)

Quartz (SiO₂)

Quartz Geode

Silicon Dioxide (SiO2) within a secondary sedimentary structure

Chert (River Siltstone/Flint)

Chert (SiO2)

Quartz Geode

Silicon Dioxide (SiO2)

Hematite (Botryoidal/Kidney Ore)

Iron(III) oxide (Fe2O3)

Blue Calcite

Calcium Carbonate (CaCO3)

Pyrite (Iron Pyrite)

Iron Sulfide (FeS2)

Turquoise

Turquoise - CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminium)

Chalcedony (Agate)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Pyrite

Iron Sulfide (FeS2)

Chalcedony Nodule (Commonly known as Agate or Chert)

Microcrystalline Quartz (SiO2)

Pyrite

Iron Disulfide (FeS2)

Green Fluorite (Beaded)

Fluorite (Calcium Fluoride, CaF2)

Fluorite (Rainbow Fluorite Point)

Calcium Fluoride (CaF2)