Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Category
Browse sedimentary (chemically precipitated mineral) specimens identified by the Rock Identifier community.
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Clear Quartz
Silicon Dioxide (SiO2)
White Quartz
Silicon Dioxide (SiO2)
Blue Chalcedony
Silicon Dioxide (SiO2)
Chalcedony (Common Agate)
Silicon Dioxide (SiO2)
Celestine (or Celestite) Geode
Strontium Sulfate (SrSO4)
Chert / Flint
Cryptocrystalline Quartz (SiO2)
Chert / Flint Nodule
Microcrystalline quartz (SiO2)
Limonite with Hematite
Hydrated iron(III) oxide-hydroxide with variable composition (FeO(OH)·nH2O)
White Calcite
Calcium Carbonate (CaCO3)
Yellow Jasper
Silicon Dioxide (SiO2 with iron oxide inclusions)
Druzy Quartz on Sandstone
Silicon Dioxide (SiO2) with Quartz Crystals on Clastic Sedimentary Rock
Ironstone Concretion (Moqui Marble)
Iron Oxide Concretion (Fe2O3 / FeO(OH) mixed with SiO2)
Jasper Pebble
Microcrystalline Quartz (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Dalmation Stone (Dyed)
Peralkaline rhyolite
Agate Slice (Carnelian Agate)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Carnelian
Carnelian Chalcedony (SiO2 with Hematite impurities)
Honey Calcite
Calcium Carbonate (CaCO3)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Quartz (Drusy/Crystalline variety)
Silicon Dioxide (SiO2)
Hematite
Iron(III) oxide (Fe2O3)
Hematite
Iron(III) oxide (Fe2O3)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Agate (Chalcedony)
Cryptocrystalline Quartz (SiO2)
Chert (containing Quartz)
Microcrystalline Silica (SiO2)
Green Calcite
Calcium Carbonate (CaCO3)
Botryoidal Chalcedony
Chalcedony (SiO2)
Limonite / Ironstone Concretion
Hydrated Iron Oxide (FeO(OH)%C2%B7nH2O)
Limonite pseudomorph after Pyrite
Goethite/Limonite FeO(OH)·nH2O
Sandstone Concretion (Omar or Nut Rock)
Sedimentary Concretion (specifically an 'Omarolluk' or Omar)
Quartz (Clear or Milky)
Silicon Dioxide (SiO2)
Quartz (Chert/Quartzite variant)
Silicon Dioxide (SiO2)
Botryoidal Chalcedony with Calcite
Chalcedony (SiO2 with accessory minerals, likely CaCO3)
Banded Jasper (Mookaite / Chert)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Septarian Nodule
Septarian Concretion (Calcite, Aragonite, and Limestone)
Yellow Jasper
Silicon Dioxide (SiO2) with Iron Oxides
Quartz Geode
Crystalline Silicon Dioxide (SiO2) in Geode form