Mineral Within Sedimentary Rock

Milky Quartz (Druzy Geode fragment)

Silicon Dioxide (SiO2)

Chert (concretionary/nodular variant)

Microcrystalline Quartz (SiO2) with possible fossil or mineral inclusions

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Yellow Quartz (Chalcedony or Agate)

Silicon Dioxide (SiO2)

Moss Agate

Chalcedony (Silicon Dioxide, SiO2) with inclusions

Quartz (Milky or White Quartz)

Silicon Dioxide (SiO2)

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Clear Quartz

Silicon Dioxide (SiO2) / Rock Crystal

Dragon Stone

Argillaceous Sedimentary Rock (Ohko Stone)

Gneiss (specifically a weathered Amphibolite or Garnet Gneiss)

Gneiss (complex silicate composition)

Galena

Lead Sulfide (PbS)

Red Sandstone

Arenite (primarily Quartz with Hematite cement)

Red Jasper

Silicon Dioxide (SiO2) with Hematite impurities

Sandstone (likely a river or beach pebble)

Sandstone (a clastic sedimentary rock)

Specular Hematite

Hematite (Fe2O3)

Red Sandstone

Sandstone (mainly SiO2 with Iron Oxide cement)

Petrified Wood

Silicified Wood (primarily SiO2)

Ferruginous Sandstone (Gerrit)

Arenite with Iron Oxide cementation

Chert (variations include Flint/Chalcedony)

Chert (SiO2 - Silicon Dioxide)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Gneiss

Gneiss (High-grade metamorphic rock)

Quartz Geode (Druzy)

Crystalline Silicon Dioxide (SiO2)

Sandstone (Quartzose Sandstone Pebble)

Arenite (primarily SiO2)

Jasper

Silicon Dioxide (SiO2)

Banded Agate (with small Geode cavity)

Silicon Dioxide (SiO2) - Chalcedony variety

Marble

Recrystallized Calcite Rock (CaCO3)

Greenstone

Metamorphosed Mafic Igneous Rock

Dalmation Jasper (Dalmation Stone)

Perthitic feldspar-quartz-amphibole rock

Gneiss

Gneiss (Metamorphic high-grade)

Quartz (Common Milky Quartz)

Silicon Dioxide (SiO2)

Green Aventurine

Silicon Dioxide (Quartz variety) with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz (Milky/Clear Quartz)

Silicon Dioxide (SiO2)

Gneiss

Gneiss (High-grade metamorphic rock)

Basalt

Basalt

Chert (Jasper/Flint variety)

Microcrystalline Quartz (SiO2)

Sandstone Pebble with Iron Staining

Clastic Sedimentary Rock (primarily Quartz with Fe2O3 oxides)

Ironstone Concretion (Moqui Marble)

Ironstone concretion (Fe2O3 with a sandstone core)

Banded Agate

Sedimentary Cryptocrystalline Quartz (SiO2)

Dalmatian Stone (often called Dalmatian Jasper)

Peralkaline Quartz-Feldspar Rock with Arfvedsonite (formerly believed to be Jasper)

Tufa (Limestone)

Calcareous Tufa (CaCO3)

Sandstone (with Iron Staining)

Clastic sedimentary rock (High Silica / Iron Oxide)