Chert (Flint)
Silicon Dioxide (SiO2)
Category
Browse man made alloy (metallic) specimens identified by the Rock Identifier community.
Chert (Flint)
Silicon Dioxide (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3)
Chert (Chert / Flint Variety)
Microcrystalline / Cryptocrystalline Quartz (SiO2)
Chert (often called Flint or River Stone)
Microcrystalline alpha-quartz (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Quartzite
Metamorphic quartz rock (SiO2)
Quartzite
Metamorphic Quartzite (SiO2)
Quartzite
Quartzite (Metamorphosed Sandstone)
Quartzite
Metamorphic Quartzite (SiO2)
Quartzite
Metamorphic Quartz Rock (SiO2)
Red Quartzite
Quartzite (SiO2)
Quartzite
Metamorphic Quartz Arenite
Chert
Microcrystalline quartz (SiO2)
Flint / Chert Pebble
Microcrystalline Quartz (SiO2)
Sandstone
Arenite
Flint
Silicon dioxide (Microcrystalline Quartz / Chert)
Chert (or Flint)
Microcrystalline quartz (SiO2)
Chert (Flint / Jasper)
Silicon Dioxide (SiO2)
Diamond
Native Carbon (C)
Chert (Jasper/Flint)
Silicon Dioxide (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Chert (Honey Chert / Flint)
Silicon Dioxide (SiO2)
Diorite (Gneissic)
Diorite
Chert (and Agate/Chalcedony)
Microcrystalline Quartz (SiO2)
Diamond (faceted)
Diamond (Pure Carbon, C)
Pearl
Aragonite (CaCO3) with Conchiolin
Aragonite
Aragonite (Calcium Carbonate - CaCO3)
Anthracite Coal
Anthracite
Hematite
Iron(III) oxide (Fe2O3)
Dark gray rounded stone, possibly basalt or slag
Uncertain; likely fine-grained basalt (plagioclase–pyroxene) or iron-rich industrial slag
Sandstone
Clastic Sedimentary Rock
Sandstone (Quartzose)
Sandstone (SiO2 dominated)
Hematite
Iron(III) oxide (Fe2O3)
Orgonite Pyramid (containing Amethyst and mixed minerals)
Silicon Dioxide (SiO2) in synthetic resin
Quartz Sandstone Pebble
Sandstone (SiO2 dominated)
Mica Schist
Mica Schist (principally Biotite/Muscovite, Quartz, and Feldspar)
Coquina
Bioclastic Limestone (composed primarily of CaCO3)
Coquina / Fossiliferous Limestone
Calcareous bioclastic sedimentary rock (CaCO3)
Corundum (Sapphire variant)
Aluminium oxide (Al2O3)
Magnetite / Lodestone
Magnetite (Fe3O4)
Rainbow Hematite (Titanium-Coated Hematite)
Titanium-treated Hematite (Fe2O3)
Chert / Flint
Silicon Dioxide (SiO2)