Sedimentary (Secondary Classification: Cryptocrystalline Quartz)

Puddingstone (Jasper Conglomerate)

Jasper Conglomerate (SiO2 matrix with Fe2O3 inclusions)

Ocean Jasper

Orbicular Jasper (Silicon Dioxide with impurities like Hematite and Chlorite, SiO2)

Gowganda Tillite (Puddingstone)

Glacial Tillite (Diamictite) with Jasper inclusions

Jasper Agate (specifically Brecciated Jasper)

Silicon Dioxide (SiO2) with iron oxide and clay impurities

Yellow Jasper (Chert)

Silicon Dioxide (SiO2)

Jasper with Quartz (Agate/Jasper mix)

Silicon Dioxide (SiO2) with iron oxide inclusions

Chert (Quartz Variety)

Chert (SiO2)

Sandstone (Graywacke)

Clastic Sedimentary Rock (Lithic Sandstone)

Quartz Druzy on Geode Fragment

Silicon Dioxide (SiO2)

Conglomerate

Conglomerate (Sedimentary rock)

Gneiss

Gneiss (Metamorphic rock)

Sandstone

Clastic sedimentary rock (primarily SiO2)

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Quartz Geode

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Quartz Geode

Silicon Dioxide (SiO2)

Quartz Geode

Silicon Dioxide (SiO2)

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

Jasper (Red and Yellow)

Silicon Dioxide (SiO2) with iron oxide impurities

Sandstone (with Iron Staining)

Clastic sedimentary rock (SiO2 with Fe2O3 impurities)

Sandstone

Arenite (composed primarily of SiO2)

Sandstone (Quartz Arenite)

Sandstone (Chemical formula: primarily SiO2)

Sandstone (Weathered)

Arenite (primarily SiO2)

Red Sandstone

Arenite with Hematite (Fe2O3) cement

Sandstone (Quartzite-rich)

Clastic Sedimentary Rock (primarily SiO2)

Jasper (Red/Brown Variety)

Jasper (Silicon Dioxide, SiO2 plus Iron Oxide impurities)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Quartz Geode

Crystalline Silicon Dioxide (SiO2) in Geode form

Granite Gneiss

Gneiss (High-grade Metamorphic Rock)

Sandstone with Algae Growth

Arenite with Chlorophyta/Lichen

Sandstone Concretion with Fossil Wood

Ferruginous Sandstone Concretion (SiO2 with Fe2O3 cement)

Quartzite with inclusions

Quartzite (primarily SiO2)

Sandstone (Quartzose)

Arenite (SiO2 based)

Feldspar

KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8

Gneiss (Banded Gneiss)

Gneiss

Druzy Quartz on Chert/Siltstone

Silicon Dioxide (SiO2) on Microcrystalline Silica/Siltstone matrix

Quartz (Milky or Citrine-tinted)

Silicon Dioxide (SiO2)

Sandstone

Arenite

Shale

Fissile mudrock (composed primarily of clay minerals and quartz)

Chert Breccia

Brecciated Microcrystalline Quartz (SiO2)