Quartz Geode Fragment
Silicon Dioxide (SiO2)
Category
Browse sedimentary (secondary classification for a weathered mineral specimen) specimens identified by the Rock Identifier community.
Quartz Geode Fragment
Silicon Dioxide (SiO2)
Quartz Druze on Matrix
Silicon Dioxide (SiO2)
Fluorite
Calcium Fluoride (CaF2)
Wonderstone Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Brimstone (Native Sulfur)
Native Sulfur (S)
Amygdaloidal Basalt
Amygdaloidal Basalt (with secondary mineral infilling)
Quartzite with inclusions
Quartzite (primarily SiO2)
Quartz / Common Opal Transition
Silicon Dioxide (SiO2)
Pyrite Cubes in Matrix
Iron Disulfide (FeS2) in Host Matrix
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Chalcedony (Desert Rose or Botryoidal Chalcedony)
Silicon Dioxide (SiO2)
Grey River Stone (Quartz-rich Quartzite/Siltstone)
Quartzite / Meta-siltstone (primarily SiO2)
Quartz Druze (Crystalline Quartz)
Silicon Dioxide (SiO2)
Chert (specifically a stream-worn Chert Nodule)
Sedimentary Cryptocrystalline Quartz (SiO2)
Chalcedony (Agate/Carnelian variant)
Silicon Dioxide (SiO2)
Sandstone (Red)
Arenite (SiO2 with Fe2O3)
Chert (Flint variety)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Jasper (Petrified Wood variant)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Septarian Nodule
Septarian Concretion
Sandstone (River Pebble)
Clastic Sedimentary Rock (primarily Quartz)
Blue and White Quartz
Crystalline Silicon Dioxide with inclusions (SiO2)
Shale (Beach-worn)
Laminated Pelite (primarily clay minerals and quartz)
Peacock Ore
Bornite (Cu5FeS4) or Chalcopyrite (CuFeS2) with iridescent tarnish
Sandstone (Pebble/Cobble)
Arenite (primarily SiO2)
Pyrite in Matrix (Quartz/Schist)
Iron Sulfide (FeS2)
River Pebble (Quartzite or Chert)
Silicon Dioxide (SiO2)
Red Jasper (with Quartz inclusions)
Silicon Dioxide (SiO2)
Ferruginous Quartz
Silicon Dioxide (SiO2) with iron oxide inclusions (Limonite/Goethite)
Chalcedony with Matrix
Silicon Dioxide (SiO2)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
Bornite
Bornite (Cu5FeS4)
Quartz Pebble
Silicon Dioxide (SiO2)
Sapphire (Corundum variety)
Sapphire (Al₂O₃)
Banded Chert (Jasper)
Silicon Dioxide (SiO2)
Ferruginous Quartz
Quartz with Iron Oxide inclusions (SiO2 + Fe2O3)
Chert (Flint) Nodule
Cryptocrystalline Quartz (SiO2)
Chert (often called Flint or Jasper)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Gray Limestone
Carbonate rock (CaCO3)
Chert Nodule
Chert (Cryptocrystalline variety of Quartz, SiO2)
Chert (varietal Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Flint Nodules)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (specifically Black Chert or Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)