Chert
Microcrystalline Quartz (SiO2)
Category
Browse man made rock (technosol) specimens identified by the Rock Identifier community.
Chert
Microcrystalline Quartz (SiO2)
Sandstone (Ferruginous)
Arenite with Iron Oxide cement (primarily SiO2 with Fe2O3)
Quartzite
Metamorphic Quartzite (SiO2)
Granite
Granite (Mainly Quartz SiO2, Feldspar KAlSi3O8, and Mica KAl2(AlSi3O10)(OH)2)
Coquina
Biogenic Limestone (Calcium Carbonate, CaCO3)
Polymictic breccia, possibly volcanic breccia
Polymictic clastic breccia; likely a matrix-supported breccia containing lithic fragments, quartz, feldspar, and dark mafic minerals
Diamond
Carbon (C)
Diamond
Carbon (C)
Chert
Microcrystalline Quartz (SiO2)
Chert (Siltstone / Flint)
SiO2 (Cryptocrystalline Quartz)
Banded Jasper / Chert Beach Pebble
Microcrystalline Quartz (SiO2)
Chert
Microcrystalline Quartz (SiO2)
Chert / Flint
Silicon Dioxide (Microcrystalline Quartz, SiO2)
Green Quartzite
Metamorphic Quartzite (often colored by chromium-bearing minerals or fuchsite)
Flint / Chert
Microcrystalline quartz (SiO2)
Pearl and Garnet Glass
Calcium Carbonate (CaCO3) for pearl; Silicon Dioxide (SiO2) for glass
Smoky Quartz
Smoky Quartz (SiO2)
Pearl
Organic gemstone (Calcium carbonate - CaCO3)
Pearl
Calcium carbonate (CaCO3) - mainly Aragonite with Conchiolin
Chert (specifically Flint or Nodular Chert)
Silicon dioxide (SiO2)
Diamond (in a jewelry setting)
Cubic Carbon (C)
Petrified Wood
Silicified Wood (SiO2)
Chert (Jasper/Flint var.)
Silicon Dioxide (SiO2)
Chert (often called Flint or River Stone)
Microcrystalline alpha-quartz (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Chert (Chert / Flint Variety)
Microcrystalline / Cryptocrystalline Quartz (SiO2)
Chert
Microcrystalline quartz (SiO2)
Flint / Chert Pebble
Microcrystalline Quartz (SiO2)
Quartzite
Metamorphic Quartzite (SiO2)
Quartzite
Quartzite (Metamorphosed Sandstone)
Quartzite
Metamorphic Quartz Arenite
Flint
Silicon dioxide (Microcrystalline Quartz / Chert)
Chert (or Flint)
Microcrystalline quartz (SiO2)
Red Quartzite
Quartzite (SiO2)
Chert
Microcrystalline silica (SiO2)
Diamond
Native Carbon (C)
Chert (Jasper/Flint)
Silicon Dioxide (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Chert Arrowhead (Jasper)
Chert (Cryptocrystalline Quartz, SiO2)
Chert (Flint)
Chert (Silicon Dioxide, SiO2)
Chert (Honey Chert / Flint)
Silicon Dioxide (SiO2)
Diorite (Gneissic)
Diorite