Chert (Iron-stained)
Chert (Cryptocrystalline Quartz, SiO2)
Category
Browse sedimentary (man made composite) specimens identified by the Rock Identifier community.
Chert (Iron-stained)
Chert (Cryptocrystalline Quartz, SiO2)
Sandstone (Ferruginous)
Arenite (composed primarily of SiO2 with Fe2O3 cement)
Milky Quartz
Silicon Dioxide (SiO2)
Clear Quartz
Silicon dioxide (SiO2)
Chert (specifically Red Chert or Jasper)
Microcrystalline Quartz (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Chert (Flint)
Microcrystalline silica (SiO2)
Shale
Shale (composition varies: primarily clay minerals and quartz)
Chert (Jasper variation)
Chert (Microcrystalline Silicon Dioxide, SiO2)
Sandstone with Iron Oxide
Arenite (SiO2 with Fe2O3 staining)
Fossiliferous Limestone
Biogenic Calcium Carbonate (CaCO3)
Banded Iron Formation (BIF) / Iron Ore
Banded Iron Formation (composed primarily of Hematite (Fe2O3) and Magnetite (Fe3O4) with Quartz/Chert)
Sandstone (Greywacke)
Sandstone (SiO2 enriched with lithic fragments)
Celadonite in Basalt (Green Earth)
Celadonite (K(Mg,Fe2+)(Fe3+,Al)Si4O10(OH)2)
Conglomerate
Conglomerate (Detrital sedimentary rock)
Sandstone (Pebble)
Arenite / Clastic Sedimentary Rock
Sandstone (Ferruginous)
Arenite (primarily SiO2 with iron oxide cement)
Sandstone (Ferruginous)
Arenite with Iron-Oxide Cement
Limestone with Bitumen/Chert
Calcite (CaCO3) containing organic hydrocarbons
Limestone (specifically Fossiliferous Limestone)
Calcium Carbonate (CaCO3)
Sandstone (Ferruginous)
Arenite (composed primarily of SiO2 with iron oxide Fe2O3 cement)
Sandstone
Arenite
Sandstone (Green/Yellow Siltstone variant)
Arenite or Siltstone (primarily SiO2 with mineral staining)
Sandstone Clast
Arenite (primarily SiO2)
Sandstone (Quartzose Sandstone)
Arenite (primarily SiO2 with minor Fe2O3)
Sandstone (Pebble)
Arenite (primarily SiO2)
Limestone
Calcium Carbonate (CaCO3)
Sandstone (Ferruginous)
Arenite with Iron oxide staining (SiO2 with Fe2O3)
Sandstone (likely Quartzose Sandstone)
Arenite (composed primarily of SiO2)
Limestone (specifically fossiliferous/skeletal limestone)
Calcium Carbonate (CaCO3)
Sandstone (Banded)
Clastic Sedimentary Rock (primarily Quartz, SiO2)
Sandstone (with banding/weathering)
Clastic Sedimentary Rock (primarily SiO2)
Limestone
Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Sandstone
Arenite (SiO2 based clastic rock)
Limestone
Calcium Carbonate (CaCO3)
Sandstone
Sandstone (clastic sedimentary rock, composed predominantly of sand-sized minerals or rock fragments)
Sandstone (likely Fossiliferous Sandstone)
Clastic sedimentary rock (primarily SiO2)
Red Jasper
Silicon Dioxide with Iron Oxide (SiO2)
Chert (Nodular Chert)
Microcrystalline or Cryptocrystalline Silicon Dioxide (SiO2)
Chert (specifically Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Coprolite
Coprolite