Chert (Flint)
Chert (SiO2)
sedimentary
Category
Mineral Description (Anthropogenic Material)
Browse mineral description (anthropogenic material) specimens identified by the Rock Identifier community.
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Chert (Yellow/Tan variety)
Microcrystalline or cryptocrystalline Quartz (SiO2)
sedimentary
Chert (variations include Flint/Jasper)
Cryptocrystalline Silicon Dioxide (SiO2)
sedimentary
Chert (Flint)
Chert (SiO2)
sedimentary
Quartzite Pebble
Metamorphic Quartz (SiO2)
metamorphic
Chert (Red/Pink Jasper subtype)
Silicon Dioxide (SiO2)
sedimentary
Basalt
Basalt (Aphanitic mafic volcanic rock)
igneous
Turquoise
Turquoise (CuAl6(PO4)4(OH)8·4H2O)
mineral
Granite
Granite (a felsic intrusive igneous rock)
igneous
Jasper
Silicon Dioxide (SiO2)
Mineral
Chert (Chalcedony/Agate)
Microcrystalline Quartz (SiO2)
sedimentary
River Rock
Sedimentary Rock (various compositions)
sedimentary
Black Chert
Chert (microcrystalline quartz)
Mineral
Granite
Granite (a felsic intrusive igneous rock)
Igneous Rock
Red Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Jasper
Silicon Dioxide (SiO2) - a variety of Chalcedony (Cryptocrystalline Quartz)
Mineral
Petrified Wood
Silicified Wood (SiO2)
metamorphic
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
sedimentary
Basalt (Weathered)
Extrusive Igneous Rock (Mafic composition)
igneous
Jasper
Silicon dioxide (SiO2) with iron oxide inclusions
sedimentary
Quartzite
Quartzite (SiO2)
metamorphic
Basalt
Basalt (Mafic volcanic rock)
igneous
Basalt
Basalt
igneous
Quartzite
Quartzite (SiO2)
metamorphic
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Quartzite
Quartzite (primarily SiO2)
metamorphic
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Granite Cobble
Granite (Phaneritic Quartz-Feldspar-Mica intrusive rock)
igneous
Conglomerate with Native Copper
Clastic Sedimentary Rock with Native Copper (Cu)
sedimentary
Quartz Vein in Metamorphic Rock
Silicon Dioxide (SiO2) within Metasedimentary host
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Metaconglomerate
Metaconglomerate (Quartzite conglomerate)
metamorphic
Quartzite (Iron-stained)
Quartzite (SiO2 with Fe-oxides)
metamorphic
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Fossiliferous Sedimentary Rock (Coquina/Limestone)
Fossiliferous Calcarenite / Bioclastic Limestone
sedimentary
Puddingstone (Conglomerate)
Conglomerate (clastic sedimentary rock)
sedimentary
Quartzite
Quartzite
metamorphic
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Quartzite Pebble
Recrystallized Silicon Dioxide (SiO2)
metamorphic
Basalt
Basalt
igneous