Rock Identifier

Category

Sedimentary (If Limestone) Or Metamorphic (If Marble)

Browse sedimentary (if limestone) or metamorphic (if marble) specimens identified by the Rock Identifier community.

Learn about Sedimentary (If Limestone) Or Metamorphic (If Marble) in the encyclopedia

Marble

Limestone

Cipollino Marble

Cipollino Marble

Parian Marble

Carrara Marble

Green Marble

Ruin Marble

Pentelic Marble

Onyx Marble

Crinoidal Limestone

Crinoidal Limestone

Lithographic Limestone

Fossiliferous Limestone

Fossiliferous Limestone

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Ruby (faceted gemstone) (Corundum (Al2O3 with Cr impurities)) — gemstone

Ruby (faceted gemstone)

Corundum (Al2O3 with Cr impurities)

Blue Apatite (Calcium Fluorophosphate - Ca5(PO4)3F) — mineral

Blue Apatite

Calcium Fluorophosphate - Ca5(PO4)3F

Apatite (Fluorapatite (Ca5(PO4)3F)) — mineral

Apatite

Fluorapatite (Ca5(PO4)3F)

Blue Sapphire (Corundum (Al2O3 with trace amounts of Fe and Ti)) — gemstone

Blue Sapphire

Corundum (Al2O3 with trace amounts of Fe and Ti)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Banded Calcite (often sold as 'Mexican Onyx') (Calcite (Calcium Carbonate, CaCO3)) — sedimentary

Banded Calcite (often sold as 'Mexican Onyx')

Calcite (Calcium Carbonate, CaCO3)

Man-made Polished Porcelain Tile (Artificial Geologic Lookalike) (Fused Silicate Ceramic with Alumina (Synthetic Kaolinite derivative)) — Synthetic (Ceramic)

Man-made Polished Porcelain Tile (Artificial Geologic Lookalike)

Fused Silicate Ceramic with Alumina (Synthetic Kaolinite derivative)

Synthetic (Ceramic)

Banded Calcite (often sold as Onyx Marble) (Calcium Carbonate (CaCO3)) — mineral

Banded Calcite (often sold as Onyx Marble)

Calcium Carbonate (CaCO3)

Quartzite (Metamorphic rock predominantly composed of Quartz (SiO2)) — metamorphic

Quartzite

Metamorphic rock predominantly composed of Quartz (SiO2)

Banded Gneiss (Gneiss (High-grade Regional Metamorphic Rock)) — metamorphic

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Quartzite (Quartzite (mostly SiO2)) — metamorphic

Quartzite

Quartzite (mostly SiO2)

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Quartzite (River Cobble) (Metamorphosed Quartz Sandstone (SiO2)) — metamorphic

Quartzite (River Cobble)

Metamorphosed Quartz Sandstone (SiO2)

Blue calcite (Calcite (CaCO₃), likely massive to coarsely crystalline blue calcite) — mineral

Blue calcite

Calcite (CaCO₃), likely massive to coarsely crystalline blue calcite

Pink calcite (Calcite — CaCO₃) — mineral

Pink calcite

Calcite — CaCO₃

Banded calcite (travertine-like carbonate) (Calcite, CaCO₃; likely banded limestone or cave travertine) — sedimentary

Banded calcite (travertine-like carbonate)

Calcite, CaCO₃; likely banded limestone or cave travertine

White quartz-rich metamorphic rock, likely quartzite (Quartzite; predominantly crystalline SiO₂, possibly micaceous or feldspathic) — metamorphic

White quartz-rich metamorphic rock, likely quartzite

Quartzite; predominantly crystalline SiO₂, possibly micaceous or feldspathic

Orange Calcite (Calcite (CaCO3)) — Mineral

Orange Calcite

Calcite (CaCO3)

Raw Ruby (Corundum) (Corundum (Aluminum Oxide, Al2O3)) — mineral

Raw Ruby (Corundum)

Corundum (Aluminum Oxide, Al2O3)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Banded Calcite (often sold as Yellow Aragonite or Onyx) (Calcium Carbonate (CaCO3)) — sedimentary

Banded Calcite (often sold as Yellow Aragonite or Onyx)

Calcium Carbonate (CaCO3)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Blue Calcite (Calcium Carbonate (CaCO3)) — mineral

Blue Calcite

Calcium Carbonate (CaCO3)

Quartzite with Iron Inclusions (Metamorphosed Quartz Arenite (SiO2)) — metamorphic

Quartzite with Iron Inclusions

Metamorphosed Quartz Arenite (SiO2)

Galena (Lead(II) sulfide (PbS)) — mineral

Galena

Lead(II) sulfide (PbS)

Ruby (varieties of Corundum) (Aluminum oxide (Al2O3) with Chromium traces) — mineral

Ruby (varieties of Corundum)

Aluminum oxide (Al2O3) with Chromium traces

Galena (Lead Sulfide (PbS)) — mineral

Galena

Lead Sulfide (PbS)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Likely quartz-rich metamorphic rock (quartzite or quartz-veined schist) (Quartzite/siliceous schist; chiefly quartz (SiO₂), with probable mica and iron-oxide staining) — metamorphic

Likely quartz-rich metamorphic rock (quartzite or quartz-veined schist)

Quartzite/siliceous schist; chiefly quartz (SiO₂), with probable mica and iron-oxide staining

Gneiss (Metamorphic Rock) (Gneiss (variable mineral formula primarily containing Quartz, Feldspar, and Mica)) — metamorphic

Gneiss (Metamorphic Rock)

Gneiss (variable mineral formula primarily containing Quartz, Feldspar, and Mica)

Pink calcite (likely) (Calcite — calcium carbonate, CaCO₃) — mineral

Pink calcite (likely)

Calcite — calcium carbonate, CaCO₃

Banded Calcite (often sold as Mexican Onyx or Aragonite) (Calcite/Aragonite (Calcium Carbonate, CaCO3)) — sedimentary

Banded Calcite (often sold as Mexican Onyx or Aragonite)

Calcite/Aragonite (Calcium Carbonate, CaCO3)

Green Onyx (Carved Mushroom) (Calcite / Banded Calcite (often commercially sold as 'Mexican Onyx')) — sedimentary

Green Onyx (Carved Mushroom)

Calcite / Banded Calcite (often commercially sold as 'Mexican Onyx')

Pink Quartzite (Quartzite (SiO2 with iron oxide inclusions)) — metamorphic

Pink Quartzite

Quartzite (SiO2 with iron oxide inclusions)

Likely pink calcite fragment (Calcite (calcium carbonate, CaCO₃)) — mineral

Likely pink calcite fragment

Calcite (calcium carbonate, CaCO₃)

Milky calcite (Calcite (CaCO₃), likely a cleavage fragment) — mineral

Milky calcite

Calcite (CaCO₃), likely a cleavage fragment

Zebra Jasper (Silicon Dioxide (SiO2) with various inclusions) — metamorphic/sedimentary

Zebra Jasper

Silicon Dioxide (SiO2) with various inclusions

metamorphic/sedimentary

Green Calcite (Calcite (CaCO3)) — mineral

Green Calcite

Calcite (CaCO3)

Quartzite (Quartzite (composed primarily of SiO2)) — metamorphic

Quartzite

Quartzite (composed primarily of SiO2)

Banded Calcite (Mexican Onyx) (Calcium Carbonate (CaCO3)) — sedimentary

Banded Calcite (Mexican Onyx)

Calcium Carbonate (CaCO3)