Mineral Like Byproduct

Sodalite

Na8(Al6Si6O24)Cl2

Granite Gneiss

High-grade regional metamorphic rock (Quartz-Feldspar Gneiss)

Petrified Wood

Silicified Wood (SiO2)

Quartz

Silicon Dioxide (SiO2)

Sandstone

Arenite (SiO2 based)

Satin Spar (often sold as Selenite)

Gypsum (CaSO4·2H2O)

Sandstone (Quartzite Pebble)

Arenite (primarily SiO2)

Clear Quartz (Crystal Quartz)

Silicon Dioxide (SiO2)

Quartz in Matrix (possibly with Biotite or Hornblende)

Quartz (Silicon Dioxide, SiO2) in Granitic Matrix

Quartz Geode with Goethite/Hematite

Silicon Dioxide (SiO2) with Iron Oxides

Quartz (Tumbled)

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon dioxide (SiO2)

Quartzite with Hematite staining

Quartzite (SiO2) with iron oxide inclusions

Ironstone Concretion

Siderite or Limonite Concretion

Oolitic Ironstone

Sedimentary Ooidal Ironstone (Limonite/Hematite mixture)

Yellow Jasper

Microcrystalline Quartz with Iron Oxide (SiO2)

Puddingstone

Conglomerate

Petrified Wood

Silicified Wood (SiO2)

Red Sandstone Pebble

Arenite (primarily Quartz SiO2 with Hematite Fe2O3 staining)

Moss Agate

Silicon Dioxide (SiO2) with inclusions of Manganese or Iron oxide

Desert Rose (Baryte/Gypsum Rosette)

Baryte (BaSO4) or Gypsum (CaSO4·2H2O)

Opalite (Man-made Glass)

Synthetic Opalised Glass

Milky Quartz

Crystalline Silicon Dioxide (SiO2)

Limonite (Bog Iron)

Limonite (Hydrated iron(III) oxide-hydroxide) - FeO(OH)·nH2O

Barite (Desert Rose or Cockscomb variety)

Barium Sulfate (BaSO4)

Amethyst Geode

Silicon Dioxide (SiO2) with iron impurities

Amethyst Sage Agate

Silicon Dioxide (SiO2) with trace minerals (Manganese/Iron oxides)

Petrified Wood

Silicified Wood (SiO2 - Silicon Dioxide)

Limonitic Sandstone (Stained Sandstone)

Clastic Sedimentary Rock with Iron Oxide (Limonite/Goethite) staining

Granite (White Granite variant)

Phaneritic Plutonic Rock (High-silica Felsic)

Turquoise in Matrix

Hydrated phosphate of copper and aluminium: CuAl6(PO4)4(OH)8·4H2O

Granite

Phaneritic Felsic Igneous Rock

Quartz (specifically Milky Quartz/Quartzite)

Silicon Dioxide (SiO2)

Chert (and its variety Flint)

Silicon Dioxide (SiO2) - Microcrystalline or cryptocrystalline Quartz

Sandstone (Quartzose Sandstone Pebble)

Arenite (primarily SiO2)

Ferruginous Quartzite (also known as Ironstone or Gossan)

Ferruginous Quartzite with Goethite/Hematite staining

Sandstone (Ferruginous)

Arenite with Iron Oxide cement (SiO2 + Fe2O3)

Turquoise

Hydrated phosphate of copper and aluminium - CuAl6(PO4)4(OH)8·4H2O

Aquamarine

Beryllium aluminum silicate (Be3Al2Si6O18)

Sandstone (Quartzose)

Arenite (primarily SiO2)

Sandstone (likely Quartzose Sandstone)

Arenite (composed primarily of SiO2)

Calamites (Fossil)

Calamites sp. (Tracheophyta, Equisetopsida)