Pyrite (on host rock)
Iron Sulfide (FeS2)
Category
Browse sedimentary (primary) with artificial modification specimens identified by the Rock Identifier community.
Pyrite (on host rock)
Iron Sulfide (FeS2)
Sandstone (Quartzose)
Arenite (primarily SiO2)
Sandstone (with Lichen)
Arenite (composed primarily of SiO2)
Sandstone
Arenite (primarily SiO2 - Silicon Dioxide)
Sandstone
Arenite (SiO2 primarily)
Limestone
Calcium carbonate (CaCO3)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Iron Oxide staining)
Banded Chert (River Pebble)
Microcrystalline Quartz (SiO2)
Sandstone (Quartz Arenite)
Sandstone (SiO2 with possible mineral cements)
Sandstone (Quartzose)
Arenite (predominantly SiO2)
Limestone
Calcium Carbonate (CaCO3)
Quartz / Limestone Gravel
SiO2 (Silicon Dioxide) and CaCO3 (Calcium Carbonate)
Ferruginous Sandstone (with ripple marks)
Arenite with Iron-Oxide (Fe2O3) cement
Limestone
Calcium Carbonate (CaCO3)
River Rock (River Cobbles)
Fluvial Conglomerate Clasts (primarily composed of various minerals such as Quartz, SiO2)
Sandstone (Quartzose)
Arenite (SiO2 based)
Dalmatian Stone
Peralkaline rhyolite
Sandstone
Arenite (primarily SiO2 with various cementing agents)
Banded Chert
Silicon Dioxide (SiO2)
Sandstone (Calcareous Sandstone)
Calcareous Sandstone (primarily SiO2 with CaCO3 cement)
Slate
Foliated Metamorphic Rock (Mainly composed of Quartz, Illite, Chlorite)
Sandstone (River Pebble)
Arenite
Ferruginous Sandstone (with possible Epidote/Chlorite coloring)
Sandstone (SiO2 dominated with Fe2O3 staining)
Sandstone
Arenite (composed primarily of SiO2)
Sandstone (Quartzose)
Arenite (primarily SiO2)
Ferruginous Sandstone
Arenite with Iron-Oxide Cement (SiO2 with Fe2O3/FeO(OH))
Sandstone
Arenite (primarily SiO2)
Petoskey Stone
Hexagonaria percarinata
Petoskey Stone
Hexagonaria percarinata
Coquina
Bioclastic Limestone (CaCO3)
Quartz Geode
Silicon Dioxide (SiO2) within a geode
Jasper
Silicon Dioxide (SiO2)
Kyanite
Kyanite (Al2SiO5)
Quartz Geode
Silicon Dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Limonite
Limonite (Hydrous iron oxides, predominantly Goethite FeO(OH)·nH2O)
Pyrite and Sunstone
Iron Sulfide (FeS2) and Plagioclase Feldspar ((Ca,Na)Al(Al,Si)Si2O8)
Carnelian
Carnelian (SiO2)
Chalcedony (Agate/Carnelian type)
Silicon Dioxide (SiO2)
Satin Spar (Selenite)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
Chert (Tripolitic Chert / Flint Nodules)
Microcrystalline Quartz (SiO2)
Limestone with Quartz/Calcite Veins
Sedimentary Limestone (CaCO3 with SiO2 or CaCO3 intrusions)