Blue Celestite
Celestine (Strontium Sulfate, SrSO4)
mineral
Category
Sedimentary (Jasper), Mineral (Aquamarine)
Browse sedimentary (jasper), mineral (aquamarine) specimens identified by the Rock Identifier community.
Tumbled Carnelian and Quartz Mix
Silicon Dioxide (SiO2) with iron oxide impurities
mineral
Chalcedony (specifically Common Opal or Agate variant)
Silicon Dioxide (SiO2)
mineral
Kyanite (Blue Kyanite)
Kyanite (Al2SiO5)
mineral
Halite (Rock Salt)
Halite (NaCl)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Carnelian (Carnelian Agate)
Silicon dioxide (SiO2) - a variety of Chalcedony
mineral
Gold
Native Gold (Au)
mineral
Aragonite (Sputnik habit)
Aragonite (Calcium Carbonate, CaCO3)
mineral
Honey Calcite
Calcium Carbonate (CaCO3)
mineral
Pink Chalcedony
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky or White Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Smoky variety)
Silicon Dioxide (SiO2)
mineral
Quartz (Iron-stained or Milky)
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Chalcedony (Agate/Chert variety)
Silicon Dioxide (SiO2)
mineral
Pyrite (locally known as Fool's Gold)
Iron Sulfide (FeS2)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Yellow Chalcedony (Agate)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Common Quartz)
Silicon Dioxide (SiO2)
mineral
Carnelian Agate
Silicon Dioxide (SiO2) with iron oxide impurities
mineral
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
mineral
Angelite
Anhydrite (Calcium Sulfate, CaSO4)
mineral
Calcite (Iceland Spar)
Calcite (Calcium Carbonate, CaCO3)
mineral
Chalcedony (Common Opal variant or Quartz)
Silicon Dioxide (SiO2)
mineral
Petrified Wood
Silicified wood (Quartz, SiO2)
metamorphic
Sandstone
Arenite (SiO2 predominantly)
sedimentary
Sandstone
Arenite (SiO2 primarily)
sedimentary
Bauxite
Bauxite (Al(OH)3, AlO(OH))
sedimentary
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Chert Nodule in Limestone
Chert (Microcrystalline Quartz, SiO2) and Limestone (Calcium Carbonate, CaCO3)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone (Flagstone)
Arenite (composed primarily of SiO2)
sedimentary
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
mineral
Banded Agate (Agatized Geode Slice)
Silicon Dioxide (SiO₂)
mineral
Satin Spar (commonly sold as Selenite)
Hydrous Calcium Sulfate (CaSO4·2H2O)
mineral
Quartz (Milky/Bull Quartz)
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Rainbow Fluorite
Fluorite (Calcium Fluoride, CaF2)
mineral