Not A Rock Or Mineral (Anthropogenic Material)

Green Sea Glass

Amorphous Silica (man-made glass), SiO2 + additive metal oxides

Granite

Phaneritic plutonic rock (primarily Quartz, Feldspar, and Mica)

Serpentinite (Serpentine Rock)

Primarily composed of serpentine group minerals, such as antigorite, chrysotile, and lizardite. Chemical formula for serpentine minerals is (Mg,Fe)3Si2O5(OH)4.

Diorite

Diorite (Intermediate intrusive igneous rock)

Quartzite

Quartzite (SiO2)

Quartz

Quartz (SiO2, Silicon Dioxide)

Granite Pebble

Granite (a plutonic igneous rock composed primarily of quartz, feldspar, and mica/amphibole)

Granite

Phaneritic Intrusive Igneous Rock (primarily composed of SiO2, Al2O3, K2O, Na2O)

Quartz with Iron Stains

Quartz (SiO2) with iron oxide/hydroxide staining

Basalt

Basalt (Mafic Extrusive Igneous Rock)

Concrete with Aggregate

Artificial Conglomerate (Cement and Aggregate)

Shale

Shale (fine-grained clastic sedimentary rock)

Chert (variations include Flint or Jasper)

Cryptocrystalline Quartz (SiO2)

Quartzite

Quartzite (primarily SiO2)

Chert (White Chert/Flint)

Chert (Microcrystalline or Cryptocrystalline Quartz, SiO2)

Fossiliferous Limestone

Calcite-rich Sedimentary Rock (CaCO3)

Arfvedsonite with Garnet

Na3(Fe2+,Mg)4Fe3+Si8O22(OH)2

Basalt

Basalt

Lapis Lazuli

Lapis Lazuli (Aggregate primarily of Lazurite: (Na,Ca)8(AlSiO4)6(S,SO4,Cl,1-2) with Calcite and Pyrite)

Granite Cobble/Pebble

Granite

Chert (Flint)

Microcrystalline quartz (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Coquina / Fossiliferous Limestone

Calcareous bioclastic sedimentary rock (CaCO3)

Chert (Jasper/Agate variety)

Microcrystalline quartz (SiO2)

Chert (Jasper variety)

Microcrystalline quartz (SiO2)

Chert (specifically Flint or Jasper variant)

Cryptocrystalline Quartz (SiO2)

Milky Quartz (with potential inclusion)

Silicon Dioxide (SiO2)

Basalt

Mafic Igneous Rock (composed primarily of Pyroxene and Plagioclase Feldspar)

Laterite

Laterite (Iron and aluminum-rich residual rock)

Serpentinite

Serpentinite (complex of lizardite, chrysotile, and antigorite: (Mg,Fe)3Si2O5(OH)4)

Basalt Porphyry

Porphyritic Basalt

Agate

Agate (a cryptocrystalline variety of Quartz, SiO₂)

Jasper and Quartz conglomerate (River Rock)

Silicon Dioxide (SiO2) - Chalcedony and Quartz variety

Fossiliferous Limestone (Coquina / Shell Limestone)

Biogenic Limestone (Calcium Carbonate, CaCO3)

Chert (specifically Yellow or River Chert)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Quartzite

Quartzite (SiO2)

Unakite

Unakite (Epidote-Feldspar rock)

Quartzite

Quartzite (primarily SiO2)

Yellow Quartzite (Iron-Stained Quartzite)

Quartzite (SiO2 with Fe2O3 trace impurities)

Bloodstone

Heliotrope (cryptocrystalline Quartz, SiO2 with inclusions of Hematite)

Quartz Geode

Silicon Dioxide (SiO2)

Shale with Vein Infillings

Shale (a fine-grained clastic sedimentary rock). The veins could be Calcite (CaCO3), Quartz (SiO2), or other minerals.