Limestone (River Pebble)
Calcium Carbonate (CaCO3)
Category
Browse man made composite (lithified equivalent of sedimentary) specimens identified by the Rock Identifier community.
Limestone (River Pebble)
Calcium Carbonate (CaCO3)
Sandstone
Arenite (specifically Iron-stained Quartz Sandstone)
Sandstone (Quartzose)
Arenite (composed primarily of SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Shale
Shale (Lutite)
Quartz pebble
Quartz (Silicon dioxide, SiO2)
Chert (specifically varieties like Chalcedony or Flint)
Silicon Dioxide (SiO2)
Chert Arrowhead
Microcrystalline Quartz (SiO2)
Sandstone
Arenite
Sandstone (Quartz Arenite)
Sandstone (SiO2 with possible mineral cements)
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite
Red Hematite
Iron(III) oxide (Fe2O3)
Blue Apatite
Apatite (Group), Ca5(PO4)3(F,Cl,OH)
Sandstone (with potential fossil inclusions)
Clastic sedimentary rock (primarily SiO2)
Sandstone with Manganese Dendrites
Arenite (mostly SiO2) with Manganese Oxide inclusions (MnO2)
Sandstone
Arenite (Clastic Sedimentary Rock)
Fluorite (translucent octahedral crystal)
Calcium fluoride (CaF2)
Chert (Common Opal or Chalcedony)
Microcrystalline Quartz (SiO2)
Sandstone (Sedimentary Rock)
Arenite (SiO2 based)
Pyrite
Iron Sulfide (FeS2)
Hematite
Hematite (Fe2O3)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Celestine (or Celestite) on Matrix
Celestine (SrSO4)
Quartz (Milky/Clear Fragment)
Silicon Dioxide (SiO2)
Siltstone
Siltstone (Detrital Sedimentary Rock)
Tumbled White Quartz
Silicon Dioxide (SiO2)
Sandstone (Tafoni Weathered)
Arenite (part of the Sandstone family)
Petrified Wood
Silicified Wood (Per mineral content: SiO2, Quartz/Chalcedony)
Quartz
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Agate Geode (Unopened)
Cryptocrystalline Quartz (SiO2) with Chalcedony
Red Jasper
Silicon dioxide with iron inclusions (SiO2)
Sandstone
Arenite (Quartz-rich sedimentary rock)
Sandstone
Arenite (SiO2 based)
Sandstone
Clastic sedimentary rock (Quartz arenite)
Flint
Microcrystalline quartz (SiO2)
Jasper
Silicon dioxide (SiO2)
Polished Agate or Jasper-Agate
Silicon Dioxide (SiO2)
Limestone
Calcium Carbonate (CaCO3)
Sandstone
Sedimentary Rock (Quartz arenite)
Sandstone
Arenite (SiO2 based)