Mineral Description (Anthropogenic Material)

Chert

Microcrystalline Quartz (SiO2)

Fossiliferous Limestone (Coquina / Shell Limestone)

Biogenic Limestone (Calcium Carbonate, CaCO3)

Coquina

Biogenic Limestone (Coquina)

Quartzite (Yellow/Tan river stone variety)

Quartzite (primarily SiO2)

Schist

Mica Schist

Chert / Jasper

Sedimentary Cryptocrystalline Quartz (SiO2)

Unakite

Epidotized Granite

Grey River Pebble (Likely Quartz-rich or Limestone)

Clastic Sedimentary Rock (typically SiO2 or CaCO3 based)

Nephrite Jade

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

Jasper

Jasper (Silicified microcrystalline quartz) - SiO2

Chert (often called Flint or River Stone)

Microcrystalline Quartz (SiO2)

Banded Iron Formation (BIF)

Banded Iron Formation (Magnetite-Hematite-Chert)

Chert (Flint)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Pink Granite

Phaneritic Quartz-Feldspar Granite

Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

Limestone (Grey and White specimens)

Calcium Carbonate (CaCO3)

Siltstone

Siltstone (composed of microscopic silt-sized particles of quartz and feldspar)

Quartzite

Quartzite (primarily SiO2)

Rhyolite

Rhyolite (felsic volcanic rock)

Puddingstone (Gowganda)

Jasper-clast Polymictic Conglomerate (Gowganda Formation)

Siltstone

Siltstone (primarily composed of microcrystalline Quartz and Feldspar)

Mica Schist with Garnet

Garnetiferous Mica Schist

Quartzite

Quartzite (primarily SiO2)

Red Sandstone

Arenite (composed primarily of SiO2 with Fe2O3 cementation)

Quartzite

Quartzite (primarily SiO2)

Yellow Jasper

Silicon Dioxide (SiO2) - Opaque variety of Chalcedony/Quartz

Chert (Flint)

Cryptocrystalline Silica (SiO2)

Green Quartzite (with Fuchsite)

Quartzite with Muscovite variety Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)

Conglomerate

Conglomerate (Sedimentary rock containing rounded clasts)

Scoria

Vesicular Basalt / Scoria

Banded Iron Formation (Jaspillite)

Banded Iron Formation (BIF) / Jaspillite

Red Jasper (Mahogany Obsidian variant similarity)

Silicon Dioxide (SiO2) with iron oxide inclusions

Yellow Jasper

Silicon Dioxide with iron inclusions (SiO2)

Siltstone with flute casts or scratch marks

Clastic Sedimentary Rock (Siltstone/Fine-grained Sandstone)

Coral Rock (Coquina)

Biogenic Limestone (Calcium Carbonate - CaCO3)

Chalk

Carbonate rock (mainly CaCO3)

Porphyritic Andesite

Andesite (porphyritic variety)

Graphic Granite

Pegmatitic Feldspar with Quartz intergrowths

River Stone / Siltstone

Siltstone (composed of lithified silt)

Chert (Jasper/Ironstone variety)

Silicon Dioxide (SiO2) with iron oxide inclusions

Fossiliferous Limestone (Coquina / Shell Conglomerate)

Bioclastic Limestone (composed primarily of CaCO3)

River Cobble (Quartzite and Iron-stained Quartz)

Quartzite (SiO2 with iron oxide impurities)