Organic (Pseudo Geological)

Quartzite

Metamorphosed Quartz Sandstone

Chert (Flint variety)

Silicon Dioxide (SiO2)

Chert

Chert (Microcrystalline Quartz, SiO2)

Chert (specifically Flint or Jasper variant)

Microcrystalline quartz (SiO2)

Greenschist

Greenschist (Actinolite-Chlorite Schist)

Granodiorite

Phaneritic Plutonic Rock - Granodiorite

Banded Chert

Microcrystalline Quartz (SiO2)

Chert (Nodule)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Flint)

Silicon Dioxide (SiO2)

Chert (Chalcedony)

Microcrystalline quartz (SiO2)

Chert (Flint Pebble)

Silicon Dioxide (SiO2)

Granite

Phaneritic Felsic Igneous Rock (composed primarily of Quartz, Feldspar, and Mica)

Chert

Silicon dioxide (SiO2)

Granitic Pegmatite with Tourmaline and Sphalerite

Pegmatite containing Schorl (NaFe3Al6(BO3)3Si6O18(OH)4) and Sphalerite ((Zn,Fe)S)

Chert

Microcrystalline silica (SiO2)

Granite

Granite (a common rock type, not a single mineral; composed primarily of Quartz, Feldspar (Orthoclase and Plagioclase), and Mica (Biotite and/or Muscovite) and/or Amphibole)

Chert (Jasper/Flint variety)

Silicon Dioxide (SiO2)

Chert (often referred to as Flint or Jasper when pigmented)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Quartz / Quartzite

Silicon Dioxide (SiO2)

Chert (specifically Flint or Jasper variant)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (with Fossiliferous Silicification)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Granite

Phaneritic plutonic rock (composed of Quartz, Feldspar, and Mica/Amphibole)

Chert (Gravel)

Chert (Cryptocrystalline silicon dioxide, SiO2)

Chert (Flint)

Microcrystalline Quartz (SiO2)

Diorite

Diorite (Intermediate Plutonic Rock)

Chert

Chert (Microcrystalline Quartz, SiO2)

Yellow Quartzite

Silicon Dioxide (SiO2)

Diorite

Phaneritic Intermediate Plutonic Rock (Diorite)

Granite

Granite (Alkali-feldspar granite)

Orange Calcite

Calcite (Calcium Carbonate - CaCO3)

Nephrite Jade

Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2), a variety of Actinolite-Tremolite

Honey Calcite Sphere

Calcium Carbonate (CaCO3)

Granite

Granite (Felsic Plutonic Rock)

Chert (Flint)

Chert (Silicon Dioxide, SiO2)

Orange Calcite

Calcium Carbonate (CaCO3)

Fossiliferous Limestone

Limestone (composed primarily of calcite with included fossils CaCO3)

Calcite (likely a tumbled specimen)

Calcite (CaCO 3 )

Pink Granite

Granite (composed primarily of Orthoclase Felspar, Quartz, and Plagioclase)

Chert (within Limestone)

Silicon Dioxide (SiO2)

Granite (Pink/Potassium-rich)

Pink Granite (contains K-Feldspar, Quartz, and Plagioclase)

Sand Dollar Fossil (Echinoidea)

Class Echinoidea (likely order Clypeasteroida), CaCO3 (Calcite)

Chert (Flint)

Chert (Microcrystalline Quartz, SiO2)