Rock Identifier

Category

Metamorphic

Browse metamorphic specimens identified by the Rock Identifier community.

Learn about Metamorphic in the encyclopedia

Adinole

Amphibolite

Anthracite

Biotite Schist

Blueschist

Calc-Silicate Rock

Calc-Silicate Rock

Calc-schist

Cataclasite

Chlorite Schist

Chlorite Schist

Cipollino Marble

Cipollino Marble

Cordierite Hornfels

Cordierite Hornfels

Eclogite

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Apatite (Calcium phosphate fluorapatite, Ca5(PO4)3(F,Cl,OH)) — mineral

Apatite

Calcium phosphate fluorapatite, Ca5(PO4)3(F,Cl,OH)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Dyed Tourmaline / Rubellite (Complex cyclosilicate, often Schorl or Elbaite base with artificial dye) — mineral

Dyed Tourmaline / Rubellite

Complex cyclosilicate, often Schorl or Elbaite base with artificial dye

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Magnetite (Iron(II,III) oxide, Fe3O4) — mineral

Magnetite

Iron(II,III) oxide, Fe3O4

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Iron-stained weathered rock (Unknown) — Unknown (likely sedimentary or metamorphic)

Iron-stained weathered rock

Unknown

Unknown (likely sedimentary or metamorphic)

Quartz pebble (Silicon dioxide (SiO2)) — mineral

Quartz pebble

Silicon dioxide (SiO2)

Clear Quartz (Faceted) or Cubic Zirconia / Glass imitation (SiO2 (if Quartz), ZrO2 (if Cubic Zirconia)) — mineral

Clear Quartz (Faceted) or Cubic Zirconia / Glass imitation

SiO2 (if Quartz), ZrO2 (if Cubic Zirconia)

Quartz with Chlorite inclusions (SiO2 with (Mg,Fe)3(Si,Al)4O10(OH)2⋅(Mg,Fe)3(OH)6) — mineral

Quartz with Chlorite inclusions

SiO2 with (Mg,Fe)3(Si,Al)4O10(OH)2⋅(Mg,Fe)3(OH)6

Aquamarine (Beryl) (Beryllium Aluminum Silicate - Be3Al2Si6O18) — gemstone

Aquamarine (Beryl)

Beryllium Aluminum Silicate - Be3Al2Si6O18

Sapphire (Corundum (Al2O3)) — mineral

Sapphire

Corundum (Al2O3)

Sphalerite (Zinc Sulfide (ZnS)) — mineral

Sphalerite

Zinc Sulfide (ZnS)

Blue Apatite (Fluorapatite (Ca5(PO4)3(F,Cl,OH))) — mineral

Blue Apatite

Fluorapatite (Ca5(PO4)3(F,Cl,OH))

Blue Apatite (Ca5(PO4)3(F,Cl,OH)) — mineral

Blue Apatite

Ca5(PO4)3(F,Cl,OH)

Yellow Apatite (Fluorapatite (Ca5(PO4)3(F,Cl,OH))) — mineral

Yellow Apatite

Fluorapatite (Ca5(PO4)3(F,Cl,OH))

Quartz on Chlorite Schist (Chlorite Schist (Mg,Fe)3(Si,Al)4O10(OH)2 with Quartz (SiO2)) — metamorphic

Quartz on Chlorite Schist

Chlorite Schist (Mg,Fe)3(Si,Al)4O10(OH)2 with Quartz (SiO2)

Quartzite (Quartzite) — metamorphic

Quartzite

Quartzite

Lapis Lazuli (Lapis Lazuli (rock composed primarily of lazurite, calcite, and pyrite)) — metamorphic

Lapis Lazuli

Lapis Lazuli (rock composed primarily of lazurite, calcite, and pyrite)

Schist (Schist (Foliated Metamorphic Rock)) — metamorphic

Schist

Schist (Foliated Metamorphic Rock)

Banded Metamorphic Rock (likely Quartzite or Serpentinite/Soapstone) (Metamorphic Rock (possibly a banded Quartzite or a foliated Serpentinite/Talc Schist based on appearance, general term for such a rock is 'Banded Metamorphic Rock' or 'Gneiss' if pronounced banding of different minerals)) — Metamorphic

Banded Metamorphic Rock (likely Quartzite or Serpentinite/Soapstone)

Metamorphic Rock (possibly a banded Quartzite or a foliated Serpentinite/Talc Schist based on appearance, general term for such a rock is 'Banded Metamorphic Rock' or 'Gneiss' if pronounced banding of different minerals)

Mica (Biotite or Phlogopite variety) (Phyllosilicate (complex mineral formula involving K, Mg, Fe, Al, Si, and O)) — mineral

Mica (Biotite or Phlogopite variety)

Phyllosilicate (complex mineral formula involving K, Mg, Fe, Al, Si, and O)

Ornamental ring with likely blue sapphire and diamonds (Blue corundum (sapphire), Al₂O₃; surrounding stones appear diamond, C, set in gold-colored metal) — gemstone

Ornamental ring with likely blue sapphire and diamonds

Blue corundum (sapphire), Al₂O₃; surrounding stones appear diamond, C, set in gold-colored metal

Tiger’s eye (Quartz (SiO₂), fibrous pseudomorph after crocidolite) — gemstone

Tiger’s eye

Quartz (SiO₂), fibrous pseudomorph after crocidolite

Tumbled green aventurine (probable) (Quartz variety: aventurine quartz, SiO₂, colored commonly by fuchsite mica) — mineral

Tumbled green aventurine (probable)

Quartz variety: aventurine quartz, SiO₂, colored commonly by fuchsite mica

Polished rhodonite (Rhodonite, manganese inosilicate (MnSiO₃)) — mineral

Polished rhodonite

Rhodonite, manganese inosilicate (MnSiO₃)

Red gemstone ring, likely garnet or synthetic ruby (Possibly almandine garnet (Fe₃Al₂(SiO₄)₃) or corundum/ruby (Al₂O₃); image alone cannot distinguish) — gemstone

Red gemstone ring, likely garnet or synthetic ruby

Possibly almandine garnet (Fe₃Al₂(SiO₄)₃) or corundum/ruby (Al₂O₃); image alone cannot distinguish

Rhodonite (Rhodonite (Manganese Iron Magnesium Calcium Silicate) - (Mn,Fe,Mg,Ca)SiO3) — Mineral

Rhodonite

Rhodonite (Manganese Iron Magnesium Calcium Silicate) - (Mn,Fe,Mg,Ca)SiO3

Mica Schist (Mica Schist (Quartz-Mica Schist)) — metamorphic

Mica Schist

Mica Schist (Quartz-Mica Schist)

Green Schist (Greenschist) (Greenschist facies metamorphic rock) — metamorphic

Green Schist (Greenschist)

Greenschist facies metamorphic rock

Red faceted gemstone, likely synthetic ruby or red spinel (Ruby: corundum (Al₂O₃); spinel: MgAl₂O₄; visual identification alone is insufficient) — gemstone

Red faceted gemstone, likely synthetic ruby or red spinel

Ruby: corundum (Al₂O₃); spinel: MgAl₂O₄; visual identification alone is insufficient

Star ruby cabochon ring (Corundum, Al₂O₃ (ruby variety), displaying asterism) — gemstone

Star ruby cabochon ring

Corundum, Al₂O₃ (ruby variety), displaying asterism

Tumbled quartz pebble (Quartz, silicon dioxide (SiO₂)) — mineral

Tumbled quartz pebble

Quartz, silicon dioxide (SiO₂)

Green Aventurine (Aventurine Quartz (SiO2 with Fuchsite inclusions)) — metamorphic

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Ruby (Corundum) (Corundum (Aluminum Oxide with Chromium), Al2O3:Cr) — mineral

Ruby (Corundum)

Corundum (Aluminum Oxide with Chromium), Al2O3:Cr

Green aventurine quartz (probable) (Quartz, SiO₂, with fuchsite or other green mica inclusions) — mineral

Green aventurine quartz (probable)

Quartz, SiO₂, with fuchsite or other green mica inclusions