Mineral Like Byproduct (Technogenic)

Browse mineral like byproduct (technogenic) specimens identified by the Rock Identifier community.

Botryoidal Chalcedony (Agate/Desert Rose Chalcedony)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

mineral

Black Tourmaline in Quartz

Schorl (NaFe3Al6(BO3)3Si6O18(OH)4) in Silicon Dioxide (SiO2)

igneous

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

mineral

Rose Quartz

Silicon dioxide (SiO2) with trace amounts of titanium, iron, or manganese

mineral

Yellow Quartz (Citrine/Quartzite Pebble)

Silicon Dioxide (SiO2)

mineral

Banded Agate (Jasper-Agate)

Silicon Dioxide (SiO₂)

Mineral

Quartz Pebble

Silicon Dioxide (SiO2)

mineral

Quartz

Silicon Dioxide (SiO2)

mineral

Honey Calcite

Calcium Carbonate (CaCO3)

mineral

Clear Quartz Cluster

Silicon Dioxide (SiO2)

mineral

Quartz Pebble

Silicon Dioxide (SiO2)

mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

mineral

Smoky Quartz (Ferruginous Quartz)

Quartz (Silicon Dioxide, SiO2)

mineral

Milky Quartz

Silicon Dioxide (SiO2)

mineral

Quartz (Milky/Clear Variety)

Silicon Dioxide (SiO2)

mineral

Sandstone concretion (Ironstone-stained)

Arenite with Limonite/Hematite staining (Silica-based with Iron Oxides)

sedimentary

Sandstone (Ferruginous)

Arenite (complex silicate composition with iron oxides)

sedimentary

Olivine (Peridotite)

Magnesium iron silicate (Mg, Fe)2SiO4

igneous

Granite (Weathered)

Plutonic Igneous Rock (Granitic)

igneous

Diamond

Diamond (pure carbon, C)

mineral

Milky Quartz (Pebble)

Silicon Dioxide (SiO2)

mineral

Halite (Rock Salt)

Halite (Sodium Chloride, NaCl)

mineral

Mookaite Jasper

Silicified Radiolarite (SiO2 with impurities)

sedimentary

Cubic Zirconia (CZ)

Zirconium dioxide (ZrO2)

mineral

Chert (Arrowhead Preform or Flake)

Microcrystalline Quartz (SiO2)

sedimentary

Siderite Concretion (Nodule)

Iron Carbonate (FeCO3) Concretion

sedimentary

Yellow Aventurine (Quartz Quartzite)

Silicon Dioxide with Mica inclusions (SiO2 + KAl2(AlSi3O10)(OH)2)

Metamorphic

Chert (Jasper/Flint variant)

Silicon Dioxide (SiO2)

sedimentary

Aventurine (specifically Green Aventurine)

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

metamorphic

Sandstone (Quartz-rich)

Arenite (SiO2 based)

sedimentary

Mica Schist

Mica Schist (KAl2(AlSi3O10)(OH)2 in Matrix)

metamorphic

Septarian Nodule

Septarian concretion (Complex mixture of Siderite, Calcite, and Aragonite)

sedimentary

Sandstone

Arenite (composed primarily of SiO2)

sedimentary

Almandine Garnet

Almandine [Fe3Al2(SiO4)3]

mineral

Quartz (Milky or Cloudy variety)

Quartz (Silicon Dioxide, SiO2)

mineral

Smoky Quartz

Silicon Dioxide (SiO2)

mineral

Picture Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

sedimentary

Chalcedony (Common Opal or Agate variant)

Silicon Dioxide (SiO₂)

mineral

Dendritic Agate

Silicon Dioxide (SiO2) with inclusions of manganese or iron oxide

mineral

Clear Quartz Crystal Cluster

Silicon Dioxide (SiO2)

mineral

Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

mineral