Mineral Within Sedimentary Rock

African Turquoise (Jasper)

Polychrome African Jasper (often marketed as 'African Turquoise' due to its color, but it is not true turquoise)

Dalmation Stone

Peralkaline Rock (SiO2 with Arfvedsonite)

Sparkling Druzy Quartz on Matrix

Silicon Dioxide (SiO2) with iron oxide inclusions

Diorite (possibly fine-grained variety or a related intermediate intrusive rock like a felsic gabbro or a dark granodiorite)

Diorite (Igneous rock, intrusive, intermediate composition)

Sandstone

Sandstone (clastic sedimentary rock), primarily SiO2

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily Quartz with Hematite/Limonite oxides)

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Fe2O3 staining)

Piddock bored rock (likely Mudstone or Shale)

Ichnofossil (Gastrochaenolites borings) in Fine-grained Sedimentary Rock

Sandstone

Arenite (SiO2 based with quartz, feldspar, or lithic fragments)

Scoria (Vesicular Basalt)

Scoria (Extrusive Igneous Rock)

Quartz Druze on Matrix

Silicon Dioxide (SiO2)

Travertine

Terrestrial Sedimentary Rock (CaCO3)

Bauxite

Bauxite (Al2O3·nH2O)

Ironstone Concretion (Limonite/Goethite)

Iron oxide concretion (contains FeO(OH)·nH2O)

Conglomerate

Conglomerate rock

Puddingstone (Jasper Conglomerate)

Conglomerate (specific type: Jasper Conglomerate or Hertfordshire Puddingstone)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2)

Sandstone

Clastic Sedimentary Rock (primarily SiO2)

Ferruginous Sandstone (Ironstone)

Arenite with Limonite/Goethite cement

Agate

Silicon dioxide (SiO2)

Geode (unopened)

SiO2 - Chert-shelled concretion (mostly Quartz)

Agate

Silicon Dioxide (SiO2) - variety: Chalcedony

Amethyst (Pale/Lavender variety)

Silicon Dioxide (SiO2)

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Sandstone (likely Graywacke or Arkose variant)

Clastic Sedimentary Rock (SiO2 based)

Ocean Jasper

Orbicular Jasper/Microcrystalline Quartz (SiO2)

Sandstone (Quartz-rich)

Clastic sedimentary rock (SiO2 primary)

Sandstone

Arenite (composed primarily of SiO2)

Yellow Jasper

Silicon Dioxide (SiO2) with high iron inclusion

Yellow Quartzite (River Pebble)

Quartzite (primarily Silicon Dioxide, SiO2)

Sandstone

Arenite (composed primarily of SiO2)

Granite (specifically Rapakivi Granite)

Phaneritic Felsic Igneous Rock (Granite)

Milky Quartz (Vein Quartz)

Silicon Dioxide (SiO2)

Gold Ore in Matrix

Native Gold (Au) in Quartz/Host Rock

Sandstone (Quartzite-rich River Cobble)

Clastic sedimentary rock (primarily SiO2)

Limonite (Ironstone Concretion)

Limonite (Hydrated iron(III) oxide-hydroxide, mixtures of FeO(OH)·nH2O)

Yellow Banded Agate

Silicon Dioxide (SiO₂)

Celestite (Celestine)

Strontium Sulfate (SrSO4)

Botryoidal Hematite (Iron Stone Conglomerate)

Hematite (Fe2O3) in sedimentary matrix

Sandstone

Arenite (SiO2 primarily)

Asphalt Concrete

Bituminous conglomerate