Organic (Geological Relative)

Yellow Calcite

Calcium Carbonate (CaCO3)

Granite

Granite (Mainly Quartz, Alkali Feldspar, and Plagioclase)

Chert (Jasper variation)

Silicon dioxide (SiO2)

Chert (potentially Flint or Mudstone)

Microcrystalline Quartz (SiO2)

Schist

Mica Schist (Medium-grade metamorphic rock)

Yellow Chert or Jasper

Silicon Dioxide (SiO2)

Amazonite

Amazonite (KAlSi3O8 - a variety of Microcline Feldspar)

Orange Calcite

Calcium Carbonate (CaCO3)

Quartz / Chert

Silicon Dioxide (SiO2)

Schist (Biotite Schist)

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

Granite

Granite (Phaneritic Igneous Rock)

Chert (specifically Gray Chert)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Scoria (Volcanic Rock)

Scoria (often basaltic scoria)

Basalt

Basalt (extrusive igneous rock)

Pumice (likely)

Pumice (extrusive igneous rock)

Lapis Lazuli

Lapis Lazuli (a rock composed primarily of Lazurite (Na,Ca)₈[(S,Cl,SO₄,OH)₂|(Al₆Si₆O₂₄)], with varying amounts of Calcite, Pyrite, and Sodalite.)

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)

Agate

Agate (a variety of Chalcedony, SiO2)

Bismuth

Bismuth (Bi)

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)

Bauxite Ore

Hydrated aluminum oxides (e.g., Gibbsite Al(OH)3, Boehmite ̲̲̲̲AlOOH, Diaspore ̲̲̲̲AlOOH)

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)