Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Category
Browse sedimentary (microcrystalline silicate) specimens identified by the Rock Identifier community.
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Red Jasper
Silicon Dioxide (SiO2 with Fe2O3 inclusions)
Yellow Jasper (Chert)
Silicon Dioxide (SiO2) with iron inclusions
Green Jasper
Silicon Dioxide (SiO2) with mineral inclusions
Brecciated Chert
Sedimentary Chert (SiO2) with Calc-Silicate mineralization
Red Jasper
Silicate (SiO2 with Hematite inclusions)
Green Jasper / Bloodstone
SiO2 (Microcrystalline Quartz)
Chert (Jasper)
Microcrystalline Quartz (SiO2)
Yellow Jasper
Silicon Dioxide (SiO2)
Grey Limestone
Calcium Carbonate (CaCO3)
Common Opal / Chert
Hydrated silica (SiO2·nH2O) or Microcrystalline Quartz (SiO2)
Tumbled Agate Pebble
Silicon Dioxide (SiO2)
Green Jasper
Silicon Dioxide (SiO2) with iron silicate inclusions
Jasper
Jasper (Silicon Dioxide, SiO2)
Green Jasper
Silicon Dioxide (SiO2) with iron silicate inclusions
Green Jasper
Silicon Dioxide (SiO2) with impurities
Picture Jasper
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Small brown quartz-rich pebble, possibly chert or jasper
Microcrystalline quartz (SiO₂), tentative
Jasper
Jasper (Silicate mineral, SiO2)
Chert (Jasper variation)
Chert (Silicate mineral, SiO2)
Red Jasper
Jasper (Silicate Mineral - SiO2)
River Jasper (Chert/Chalcedony mix)
Silicon Dioxide (SiO2) with iron oxide and chlorite inclusions
River Pebble (Limestone / Siltstone)
Sedimentary pebble (predominantly CaCO3 or fine silicates)
Green Chert (Jasper)
Microcrystalline Quartz (SiO2) with chlorite/epidote inclusions
Jasper (Green Jasper / Moss Agate variety)
Silicon Dioxide (SiO2)
Chert with Asphaltum (or Tar)
Silica (SiO2) with natural Bitumen/Asphaltum
Red Jasper
Jasper (Silicate Mineral), SiO2 with Fe2O3 inclusions
Green Jasper
Silicon Dioxide (SiO2) with iron silicate inclusions
Botryoidal Chalcedony (Agate)
Silicon Dioxide (SiO2)
Dalmation Stone
Peralkaline Rock (mixed silicate minerals)
Black Jasper
Black Jasper (Silicate mineral - SiO2)
Jasper
Silicon dioxide (SiO2)
Chert (often called Flint when found in chalk/limestone)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Jasper with Hematite inclusions
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3)
Quartz / Common Opal Transition
Silicon Dioxide (SiO2)
Green Jasper
Silicon Dioxide (SiO2) with iron silicate inclusions
Chert (Jasper variety)
Microcrystalline Quartz (SiO2)
Green Jasper (River Pebble)
Silicon Dioxide (SiO2) with iron silicate inclusions
Red Jasper (River Smooth)
Silicon Dioxide (SiO2) with Hematite impurities
Tumbled Green Jasper
Silicon Dioxide (SiO2) with mineral inclusions
Green Jasper
Quartz (Silicon Dioxide, SiO2) with iron silicate inclusions
Limonite (Ironstone)
Limonite (mixture of hydrated iron oxides, primarily Goethite α-FeO(OH))