Rock Identifier

Category

Limestone

Browse limestone specimens identified by the Rock Identifier community.

Chert (Black Chert / Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Black Chert / Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (often called Flint or Jasper based on color) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (often called Flint or Jasper based on color)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Jasper) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper)

Microcrystalline Quartz (SiO2)

Chert (Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint)

Silicon Dioxide (SiO2)

Optical Calcite (Calcite (Calcium Carbonate, CaCO3)) — mineral

Optical Calcite

Calcite (Calcium Carbonate, CaCO3)

Fluorite (Green) (Fluorite (Calcium Fluoride, CaF2)) — mineral

Fluorite (Green)

Fluorite (Calcium Fluoride, CaF2)

Chert (and/or Flint) (Silicon dioxide (SiO2)) — sedimentary

Chert (and/or Flint)

Silicon dioxide (SiO2)

Banded Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Banded Chert

Microcrystalline Quartz (SiO2)

Sphalerite with Galena (Zinc Sulfide ((Zn,Fe)S) and Lead Sulfide (PbS)) — mineral

Sphalerite with Galena

Zinc Sulfide ((Zn,Fe)S) and Lead Sulfide (PbS)

Chert (specifically Red Chert or Jasper) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Red Chert or Jasper)

Microcrystalline Quartz (SiO2)

Chert / Flint (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert / Flint

Cryptocrystalline Quartz (SiO2)

Cinnabar in Matrix (Cinnabar (Mercury(II) sulfide, HgS)) — mineral

Cinnabar in Matrix

Cinnabar (Mercury(II) sulfide, HgS)

Barite (Barium Sulfate (BaSO4)) — mineral

Barite

Barium Sulfate (BaSO4)

Chert (Nodule) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Nodule)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Celestine (or Celestite) on Matrix (Celestine (SrSO4)) — mineral

Celestine (or Celestite) on Matrix

Celestine (SrSO4)

Green Fluorite (Calcium Fluoride (CaF2)) — mineral

Green Fluorite

Calcium Fluoride (CaF2)

Chert (Chalcedony/Jasper) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Chalcedony/Jasper)

Microcrystalline Quartz (SiO2)

Charoite (Charoite (Hydrated potassium sodium calcium barium strontium silicate hydroxyfluoride)) — metamorphic

Charoite

Charoite (Hydrated potassium sodium calcium barium strontium silicate hydroxyfluoride)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Chert (Gravel / Pebble) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Gravel / Pebble)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert / Jasper (Silicon Dioxide (SiO2)) — sedimentary

Chert / Jasper

Silicon Dioxide (SiO2)

Banded Flint (Chert) (Silicon Dioxide (SiO2)) — sedimentary

Banded Flint (Chert)

Silicon Dioxide (SiO2)

Chert (Green Jasperiod) (Chert (Microcrystalline Quartz, SiO2)) — sedimentary

Chert (Green Jasperiod)

Chert (Microcrystalline Quartz, SiO2)

Chert (containing Iron Oxide) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (containing Iron Oxide)

Microcrystalline Quartz (SiO2)

Chert (Iron-stained) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Iron-stained)

Microcrystalline Quartz (SiO2)

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Chert (Jasper variety) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Iceland Spar (Optical Calcite) (Calcite (CaCO3)) — mineral

Iceland Spar (Optical Calcite)

Calcite (CaCO3)

Copper Ore (with Malachite and Azurite) (Hydroxide copper carbonate (Cu2CO3(OH)2 / Cu3(CO3)2(OH)2)) — mineral

Copper Ore (with Malachite and Azurite)

Hydroxide copper carbonate (Cu2CO3(OH)2 / Cu3(CO3)2(OH)2)

Chert (often called Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (often called Flint)

Microcrystalline Quartz (SiO2)

Agate (Nodule/Chert) (Silicon Dioxide (SiO2)) — sedimentary

Agate (Nodule/Chert)

Silicon Dioxide (SiO2)

Charoite (Charoite (K(Ca,Na)2Si4O10(OH,F)·nH2O)) — metamorphic

Charoite

Charoite (K(Ca,Na)2Si4O10(OH,F)·nH2O)

Chert (Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline Quartz (SiO2)

Marble (Recrystallized Calcite (CaCO3) or Dolomite (CaMg(CO3)2)) — metamorphic

Marble

Recrystallized Calcite (CaCO3) or Dolomite (CaMg(CO3)2)

Chert / Flint (Silicon dioxide (SiO2)) — sedimentary

Chert / Flint

Silicon dioxide (SiO2)

Celestine (Celestite) (Strontium sulfate (SrSO4)) — mineral

Celestine (Celestite)

Strontium sulfate (SrSO4)

Black Spinel (Magnesium Aluminum Oxide (MgAl2O4)) — mineral

Black Spinel

Magnesium Aluminum Oxide (MgAl2O4)

Chert (specifically Flint or Jasper variant) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Flint or Jasper variant)

Microcrystalline Quartz (SiO2)

Chert (often called Flint or Jasper) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (often called Flint or Jasper)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Orange Calcite (Calcite (Calcium Carbonate, CaCO3)) — Mineral

Orange Calcite

Calcite (Calcium Carbonate, CaCO3)

Chert (Nodule) (Microcrystalline Silica (SiO2)) — sedimentary

Chert (Nodule)

Microcrystalline Silica (SiO2)