Antropogenic (Man Made Material)

Banded Gneiss (with Quartz Vein)

Gneiss (Metamorphic rock of varying mineralogy)

Chert (Jasper/Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (often called Flint or Jasper)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Silty Sand / Loam

Unconsolidated Clastic Sediment (Silicon Dioxide / Alumino-silicates mixture)

Granodiorite (Gneissic texture)

Granodiorite (containing Quartz SiO2, Plagioclase Feldspar, and Biotite)

Quartz

Silicon Dioxide (SiO2)

Rose Quartz

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

Mahogany Obsidian

Volcanic Glass with Hematite/Magnetite inclusions (SiO2 + Fe2O3)

Chert (specifically Flint or Jasper variant)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Lapis Lazuli

Lapis Lazuli (Rock containing Lazurite, Na8[AlSi O4]6[S,Cl,SO4,OH]2)

Chert (Flint variety)

Microcrystalline Quartz (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Garnet (Almandine)

Almandine (Fe3Al2(SiO4)3)

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals, Mg3Si2O5(OH)4)

Chert / Flint (with Iron Staining)

Silicon Dioxide (SiO2)

Quartzite

Quartzite (SiO2)

Chert (Nodule)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Serpentine

Serpentinite (rock) containing serpentine minerals (e.g., Antigorite, Lizardite, Chrysotile)

Chert (Flint)

Microcrystalline Quartz (SiO2)

Basalt

Basalt (Aphanitic Mafic Igneous Rock)

Herkimer Diamond

Quartz (SiO2)

Nuummite

Nuummite (Orthoamphibole rock composed of Anthophyllite and Gedrite, (Mg,Fe)7Si8O22(OH)2)

Chert (varieties include Flint or Jasper)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Jasper/Flint variety)

Microcrystalline Quartz (SiO2)

Banded Chert (Flint)

Microcrystalline Quartz (SiO2)

Pink Granite

Phaneritic plutonic rock (dominated by Alkali Feldspar)

Sandstone

Sandstone (Clastic Sedimentary Rock)

Ocean Jasper

Spherulitic Chalcedony (SiO2)

Garnetiferous Pegmatite

Pegmatite with Almandine Garnet and Muscovite

Banded Sandstone (Wonderstone)

Sandstone with Liesegang Rings (SiO2 with Iron Oxides)

Sandstone with Quarzite clasts

Arenite (SiO2 based)

Silty Shale

Silty Shale (Fissile Sedimentary Rock)

Sandstone (Red)

Arenite (Fe2O3 heavy)

Sandstone (Quartz-rich)

Arenite (SiO2)

Sandstone

Clastic sedimentary rock (primarily SiO2)

Muscovite (White Mica)

Muscovite - Potassium aluminum silicate: KAl2(AlSi3O10)(F,OH)2

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Quartz Pebble

Silicon Dioxide (SiO2)

Green Calcite

Calcium Carbonate (CaCO3)

Quartzite

Quartzite (primarily SiO2)

Olivine (in Peridotite/Dunite form)

Magnesium Iron Silicate (Mg,Fe)2SiO4

Chert (Flint)

Microcrystalline Quartz (SiO2)