Chert with Quartz Vein
Microcrystalline Quartz (SiO2) with Macrocrystalline Quartz
Category
Browse mineral like industrial smelting waste specimens identified by the Rock Identifier community.
Chert with Quartz Vein
Microcrystalline Quartz (SiO2) with Macrocrystalline Quartz
Schist
Mica Schist
Quartz Geode
Silicon Dioxide (SiO2) within a geode
Magnetite (Lodestone)
Magnetite (Fe3O4)
Magnetite (Lodestone variety)
Magnetite (Iron(II,III) oxide, Fe3O4)
Garnet (specifically Almandine or Pyrope)
Almandine: Fe3Al2(SiO4)3 or Pyrope: Mg3Al2(SiO4)3
Green Aventurine (Quartz)
SiO2 (Silicon Dioxide with Fuchsite inclusions)
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Milky Quartz (Crystal Cluster)
Silicon Dioxide (SiO2) - Quartz Variety
Agate (specifically a Blue Agate Geode Slice)
Chalcedony (cryptocrystalline variety of Quartz); SiO2
Magnetite (Iron Ore)
Magnetite (Fe3O4)
Granite (Pegmatitic)
Phaneritic Felsic Igneous Rock
Ironstone Concretion / Hematite Nodules
Ferruginous Sedimentary Rock (primarily Hematite Fe2O3 and Goethite FeO(OH))
Diamond
Diamond (pure native carbon, C)
Vesicular Basalt with Oxidation
Scoriaceous Olivine Basalt (Mafic volcanic rock)
Orange Calcite
Calcite (Calcium Carbonate - CaCO3)
Turquoise
CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminium)
Garnet Schist
Almandine Garnet in Schist (X3Al2(SiO4)3)
Blue Zircon
Zirconium Silicate (ZrSiO4)
Jasper
Jasper / Silicon Dioxide (SiO₂)
Quartz Geode
Silicon Dioxide (SiO2)
Smoky Quartz
SiO2 (Silicon Dioxide)
Agate
Banded Chalcedony (SiO2)
Citrine Quartz
Crystalline Quartz (SiO2 with iron impurities)
Red Sandstone
Arenite (with Iron Oxide pigmentation)
Fluorite Tower
Calcium Fluoride (CaF2)
Ruby
Corundum (Al2O3 with Chromium traces)
Orange Calcite
Calcite (Calcium Carbonate, CaCO3)
Bauxite
Bauxite (Mixture of Al(OH)3, AlO(OH), and Fe2O3)
Wild Horse Magnesite
Magnesite with Hematite inclusions (MgCO3)
Schist (Garnet-Mica Schist)
Garnet-Mica Schist
Blue Sapphire
Corundum (Al2O3 - Aluminum Oxide)
Quartz Geode
Silicon Dioxide (SiO2)
Garnet (Almandine/Pyrope variety)
Silicate mineral group; typically Fe3Al2(SiO4)3 (Almandine) or Mg3Al2(SiO4)3 (Pyrope)
Ruby (Corundum)
Aluminum oxide (Al2O3) with Chromium traces
Garnet (Almandine variety)
Almandine, Fe3Al2(SiO4)3
Rutilated Quartz
SiO2 with TiO2 inclusions
Sapphire
Corundum (Al2O3)
Botryoidal Chalcedony
Cryptocrystalline Silicon Dioxide (SiO2)
Yellow Quartz / Quartzite Pebble
Silicon Dioxide (SiO2)
Diamond (or Cubic Zirconia)
Carbon (C) or Zirconium Dioxide (ZrO2)
Sandstone Beach Pebble
Clastic Sedimentary Rock (primarily Quartz with Iron Oxide coating)