Mixed Mineral Assortment (Pyrite, Kyanite, Agate, Jasper)
FeS2 (Pyrite), Al2SiO5 (Kyanite), SiO2 (Agate/Jasper)
mineral
Category
Mineraloid (Human Made Geological Specimen)
Browse mineraloid (human made geological specimen) specimens identified by the Rock Identifier community.
Chert (or Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
sedimentary
Native Silver
Silver (Ag)
mineral
Chert (Nodule)
Silicon Dioxide (SiO2)
sedimentary
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Flint / Chert Nodules in Limestone
Cryptocrystalline Quartz (SiO2) within Carbonate Rock
sedimentary
Quartz Geode in Sedimentary Host Rock
Silicon Dioxide (SiO2) in Carbonate Matrix
sedimentary
Cobalt Blue Sea Glass
Amorphous Silica Glass (SiO2 + CoO)
mineraloid / anthropogenic material
Halite (Rock Salt)
Halite (Sodium Chloride, NaCl)
mineral
Basalt with Chert or Jasper Inclusion
Igneous basalt / sedimentary chert nodule
igneous
Fossilized Coral (Petoskey Stone or similar Rugose Coral)
Hexagonaria percarinata (or similar Rugose/Tabulate coral)
fossil
Biotite Schist
Schist (Biotite-dominated)
metamorphic
Pyritic Gneiss (with Garnet)
Gneiss containing Pyrite (FeS2) and Almandine Garnet (Fe3Al2(SiO4)3)
metamorphic
Fossiliferous Limestone with Rugose Coral
Calcite (CaCO3) containing a Rugosa (Horn Coral) fossil
sedimentary
Jasper Conglomerate
Jasperoid Conglomerate (predominantly SiO2 with iron oxide impurities)
sedimentary
Petrified Wood
Silicified Wood (primarily SiO2 - Silicon Dioxide)
sedimentary
Petrified Coral (Agatized Coral)
Anthozoa (Agatized Fossil)
sedimentary
Sandstone (with differential weathering)
Arenite / Quartz Sandstone (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
mineral
Sandstone with Liesegang Rings
Arenite with Iron Oxide Concretions
sedimentary
Chalcopyrite in Quartz (Gossan/Iron Hat)
CuFeS2 (Chalcopyrite) with SiO2 (Quartz)
mineral
Green Onyx (Banded Calcite)
Banded Calcite / Aragonite (CaCO3)
mineral
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Matrix with Iron Staining / Mica Schist
Silicon Dioxide (SiO2) with Iron Oxide staining
mineral
Diamond
Carbon (C)
gemstone
Granite
Phaneritic Igneous Rock (composed primarily of Quartz SiO2, Alkali Feldspar, and Plagioclase)
igneous
Chert (specifically Jasper)
Silicon dioxide (SiO2) with iron oxide inclusions
sedimentary
Chert (Jasper variety)
Chert (SiO2)
sedimentary
Fire Opal (in Matrix)
Hydrated Silica (SiO2·nH2O)
mineral
Tumbled Clear Quartz
Silicon Dioxide (SiO2)
mineral
Goldstone (with Tiger's Eye and Quartz)
Aventurine glass (Synthetic SiO2 with Cu inclusions)
mineral
Libyan Desert Glass
Impact-melt silica glass (SiO2 + traces of Al, Fe, Ti)
mineral (Tektite/Impactite)
Chert (Jasper)
Cryptocrystalline Quartz (SiO2)
sedimentary
Amber
Amber (Fossilized Tree Resin)
Mineral
Chert (Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Quartz (Smoky/Milky variety)
Silicon Dioxide (SiO2)
mineral
Jasper in Rhyolite matrix
Silicon Dioxide (SiO2) with various inclusions in Felsic Igneous matrix
igneous
Chert (Jasper/Flint variant)
Silicon Dioxide (SiO2)
sedimentary
Quartz with Mineral Inclusions
Silicon Dioxide (SiO2)
mineral
Chert (and Jasper blend)
Chert (Microcrystalline Quartz, SiO2)
sedimentary