Quartz (Milky/Clear Quartz)
Silicon Dioxide (SiO2)
mineral
Category
Sedimentary
Browse sedimentary specimens identified by the Rock Identifier community.
Yellow Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
mineral
Clear Quartz Crystal Cluster
Silicon Dioxide (SiO2)
mineral
Druzy Quartz on Limestone
Silicon Dioxide (SiO2)
mineral
Rhodochrosite
Manganese Carbonate (MnCO3)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
sedimentary
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Potassium Feldspar (Orthoclase)
KAlSi3O8
mineral
Fossilized Coral (Coquina/Limestone)
Cnidaria Anthozoa (Fossilized)
sedimentary
Honey Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Red Jasper (Polished)
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Chert (specifically Flint or Jasper variant)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (variations include Flint/Jasper)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Porcelain Tile (Sandstone-look)
Man-made Ceramic (resembling Quartz-rich Sandstone)
sedimentary (imitation)
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
White Marble
Recrystallized Calcite (CaCO3)
metamorphic
Banded Agate (Tumbled)
Agate (Variety of Chalcedony/Quartz), SiO2
mineral
Satin Spar (Selenite)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
Magnetite (Small Granule)
Magnetite (Fe3O4)
mineral
Quartz (Milky/Iron-stained)
Silicon Dioxide (SiO2)
mineral
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Aragonite Star Cluster
Aragonite (Sputnik habit) - CaesarCO3
mineral
Chalcedony (Carnelian/Agate variety)
Silicon Dioxide (SiO2) with trace hematite/iron impurities
mineral
Gneiss (specifically Banded Gneiss)
Gneiss
metamorphic
Yellow Jasper
Silicon Dioxide (SiO2) with iron hydroxides
sedimentary
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Chalcedony (Yellow Agate)
Cryptocrystalline Quartz (SiO2)
mineral
Orange Calcite point
Calcite (Calcium Carbonate, CaCO3)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Banded Agate / Chalcedony
Silicon Dioxide (SiO2) with trace impurities
mineral
Quartz (Milky Variant)
Quartz (Silicon Dioxide, SiO2)
mineral
Optical Calcite (Iceland Spar)
Calcite (Calcium Carbonate, CaCO3)
mineral
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Satin Spar (Selenite)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Green Chalcedony (likely Green Agate or Chrysoprase)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Mineral
Celestine (or Celestite) on Matrix
Celestine (SrSO4)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Chert / Flint
Cryptocrystalline Quartz (SiO2)
sedimentary