Mineral On Sedimentary Rock

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Wonderstone (Liesegang Sandstone)

Silicified Sandstone with Liesegang Rings (SiO2 + FeO(OH))

Bumblebee Jasper

Calcite-Auripigment-Pyrite-Realgar assemblage (Carbonate/Sulphide mixture)

Opal

Hydrated Amorphous Silica (SiO2·nH2O)

Red Sandstone

Arenite (predominantly SiO2 with Fe2O3)

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Ocean Jasper (Orbicular Jasper)

Silicon Dioxide (SiO2) with iron and other impurities

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Sandstone (Wonderstone)

Silicified Sandstone / Orthoquartzite with Liesegang rings

Halite (Rock Salt)

Halite (Sodium Chloride, NaCl)

Gneiss (specifically Pink Gneiss)

Gneiss (high-grade regional metamorphic rock)

Jasper Breccia

Silicon Dioxide (SiO2) with impurities

Picture Jasper

Silicon Dioxide (SiO2)

Chert (specifically Jasper)

Silicon dioxide (SiO2) with iron oxide inclusions

Black Veined Jasper (Spiderweb Jasper)

Silicon Dioxide (SiO2)

Labradorite (a variety of Feldspar)

Labradorite; (Na,Ca)(Al,Si)4O8 (a plagioclase feldspar)

Quartz-veined Siltstone/Greywacke

Clastic Sedimentary Rock with Quartz Infill (SiO2 vein)

Chert (Jasper/Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Petoskey Stone (Petrified Favosites)

Favosites (extinct colonial coral), CaCO3 with Silica replacement

River Jasper (Chert/Chalcedony mix)

Silicon Dioxide (SiO2) with iron oxide and chlorite inclusions

Quartz (Clear Quartz/Rock Crystal)

Silicon Dioxide (SiO2)

Biotite Schist

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

Chert

Siliceous sedimentary rock (predominantly microcrystalline quartz, SiO2)

Chert (also known as Flint or Common Chalcedony)

Cryptocrystalline Silica (SiO2)

Asphalt

Asphalt concrete (engineered material, not a naturally occurring rock/mineral in this form)

Magnetite / Iron Ore

Magnetite (Fe3O4)

Copper-bearing Mica Schist

Mica Schist with Native Copper inclusions

Yellow Quartz (Citrine/Yellow Jasper mix)

Silicon Dioxide (SiO2)

Petrified Wood

Silicified Wood (SiO2)

Limestone (specifically Chalky Limestone)

Calcium Carbonate (CaCO3 / Calcite)

Limestone

Calcium Carbonate (CaCO3)

Chert (and Flint variant)

Chert (SiO2)

Bumble Bee Jasper

Calcite-bearing Volcanic Tuff (not a true Jasper)

Yellow Jasper

Silicon Dioxide (SiO2) with Goethite/Limonite inclusions

Gneiss

Gneiss (High-grade regional metamorphic rock)

Fossilized Horn Coral

Order Rugosa (Rugose Coral)

Septarian Nodule

Septarian concretion (Complex mixture of Siderite/Limestone, Calcite, and Aragonite)

Septarian Nodule Segment (Turtle Stone)

Septarian Concretion (CaCO3 with Siderite or Calcite infill)

Mica Schist

Mica Schist (KAl2(AlSi3O10)(OH)2 / K(Mg,Fe)3AlSi3O10(OH)2)

Gneiss

Gneiss (High-grade metamorphic rock typically composed of Quartz, Feldspar, and Mica/Amphibole)

Jasper

Silicon dioxide (SiO2) with iron impurities

Cockle Shell (Fossil or Recent)

Class Bivalvia, Family Cardiidae (e.g., Cerastoderma edule for common cockle)