Minerals

Orange Calcite

Calcite (Calcium Carbonate, CaCO3)

Chert (Commonly known as Flint)

Microcrystalline Quartz (SiO2)

Chert (specifically Yellow/Tan Chert)

Silicon Dioxide (SiO2)

Wonderstone

Banded Rhyolite (SiO2 with impurities)

Limestone with Chert or Siltstone bands

Sedimentary carbonate rock (CaCO3) often with siliceous impurities

Flint Nodule

Microcrystalline Quartz (SiO2)

Chert (including Common Opal and Chalcedony)

Silicon Dioxide (SiO2 · nH2O)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Greenstone / Metabasalt

Metamorphosed Mafic Rock (Greenschist facies)

Chert (often called Flint in this variation)

Silicon dioxide (SiO2) - Microcrystalline quartz

Glaucophane Schist (Blueschist)

Glaucophane Schist

Schist

Mica Schist (primarily Muscovite [KAl2(AlSi3O10)(OH)2] or Biotite)

Nephrite Jade

Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)

River Cobble (Basaltic/Andesitic)

Mafic Igneous Porphyritic Rock

Quartz (Small Pebble)

Silicon Dioxide (SiO2)

Greenstone

Greenschist (commonly containing Chlorite, Actinolite, and Epidote)

Milky Quartz

Silicon Dioxide (SiO2)

Chert (Flint)

Silicon Dioxide (SiO2)

Jadeite

Jadeite (NaAlSi2O6)

Chert Nodule (Flint)

Microcrystalline quartz (SiO2)

Greenschist

Greenschist facies rock (containing chlorite, actinolite, and epidote)

Chert (Nodule)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Tektite

Tektite (Natural Glassy Ejecta)

Fossilized Shark Tooth

Scapanorhynchus (Sand Tiger Shark relative)

Mahogany Obsidian

Volcanic glass (SiO2 with Hematite or Magnetite inclusions)

Chert (Jasper)

Microcrystalline Quartz (SiO2)

River Jasper (Chert/Chalcedony mix)

Silicon Dioxide (SiO2) with iron oxide and chlorite inclusions

Chert (Yellow or Tan Chert)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Flint)

Chert (Microcrystalline or cryptocrystalline Quartz, SiO2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Lepidolite on Pegmatite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2) in Granitic Pegmatite

Greenschist

Greenschist facies rock (containing chlorite, actinolite, albite, and epidote)

Vesicular Basalt (River Pebble)

Vesicular Basalt

Ferruginous Quartz

Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions

Quartz (worked as a tool or artifact)

Silicon Dioxide (SiO2)

Chert (Jasper/Chalcedony variety)

Silicon Dioxide (SiO2)

Quartz (Gray/Smoky Varieties)

Silicon Dioxide (SiO2)

Chert (Nodule)

Silicon Dioxide (SiO2)

Potassium Feldspar (Orthoclase)

KAlSi3O8 (Potassium Aluminum Silicate)

Biotite Schist

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

Chert (Flint)

Chert (SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)