Chert (Green Chert or Jasper)
Silicon Dioxide (SiO2)
sedimentary
Category
Sedimentary (Chemically Precipitated Mineral)
Browse sedimentary (chemically precipitated mineral) specimens identified by the Rock Identifier community.
Learn about Sedimentary (Chemically Precipitated Mineral) in the encyclopedia
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Hematite (Ironstone) Nodule
Hematite (Fe2O3)
mineral
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Banded iron formation (iron-rich metamorphic rock)
BIF; alternating chert/quartz and hematite–magnetite layers
metamorphic
Banded Calcite (Onyx Marble / Green Onyx)
Travertine / Banded Calcite (CaCO3) or Aragonite
sedimentary
Honey Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Optical Calcite
Calcium Carbonate (CaCO3)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Porous limestone
Calcite-rich limestone (predominantly CaCO₃)
sedimentary
Quartz-rich metamorphic rock, likely milky quartz or quartzite
Quartz (SiO₂); possibly quartzite composed predominantly of recrystallized quartz
metamorphic
Blue Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Iceland Spar (Optical Calcite)
Calcite (CaCO3)
mineral
Limonite (Iron Ore)
Limonite (Iron oxide-hydroxide mixture, FeO(OH)·nH2O)
mineral
Limonite (Iron Ore)
Hydrated iron(III) oxide-hydroxide (FeO(OH)·nH2O)
sedimentary
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Sandstone
Arenite (Sedimentary Rock)
sedimentary
Quartz Geode with Calcite
Silicon Dioxide (SiO2) and Calcium Carbonate (CaCO3)
Mineral/Geode
Quartz Crystal on Matrix
Silicon Dioxide (SiO2)
mineral
Green Calcite
Calcite (CaCO3)
mineral
Chert
Silicon dioxide (SiO2)
sedimentary
Chert or Flint
Silicon dioxide (SiO2)
sedimentary
Honey calcite on matrix
Calcite, CaCO₃
mineral
Calcite (with iron oxide staining)
Calcium Carbonate (CaCO3)
mineral
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Honey calcite (likely)
Calcite, CaCO₃
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Dyed Quartz Geode
Silicon Dioxide (SiO2) with artificial pigment
mineral
Chert (Polished/Tumbled)
Silicon Dioxide (SiO2)
sedimentary
Banded Calcite (Mexican Onyx)
Calcium Carbonate (CaCO3)
sedimentary
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Chert (Green)
Silicon Dioxide (SiO2)
sedimentary
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
sedimentary
Aragonite (Banded Calcite / 'Mexican Onyx')
Aragonite (Calcium Carbonate - CaCO3)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Vein Quartz in Host Rock
Silicon Dioxide (SiO2) vein in sedimentary/metamorphic matrix
mineral
Light-colored limestone
Calcitic limestone; primarily calcium carbonate (CaCO₃), mineral calcite
sedimentary