Rock Identifier

Category

Metamorphic (Pseudo Igneous)

Browse metamorphic (pseudo igneous) specimens identified by the Rock Identifier community.

Learn about Metamorphic (Pseudo Igneous) in the encyclopedia

Cordierite Hornfels

Cordierite Hornfels

Migmatite

Hornblende Schist

Hornblende Schist

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

Yellow Apatite

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

Epidote (Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))) — mineral

Epidote

Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))

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

Blue Apatite

Fluorapatite / Apatite Group Ca5(PO4)3(F,Cl,OH)

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

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Quartz Vein in Host Rock (Silicon Dioxide (SiO2)) — mineral

Quartz Vein in Host Rock

Silicon Dioxide (SiO2)

Blue gemstone, likely iolite or blue sapphire (Iolite (cordierite, Mg₂Al₄Si₅O₁₈) or corundum (sapphire, Al₂O₃)) — gemstone

Blue gemstone, likely iolite or blue sapphire

Iolite (cordierite, Mg₂Al₄Si₅O₁₈) or corundum (sapphire, Al₂O₃)

Magnetite (Octahedral Crystal) (Magnetite (Fe3O4)) — mineral

Magnetite (Octahedral Crystal)

Magnetite (Fe3O4)

Magnetite (Magnetite (Fe3O4)) — mineral

Magnetite

Magnetite (Fe3O4)

Nephrite Jade (Nephrite) — Mineral/Rock

Nephrite Jade

Nephrite

Aventurine (Green Quartz) (Silicon dioxide with inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)) — mineral

Aventurine (Green Quartz)

Silicon dioxide with inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Almandine Garnet (Iron aluminum silicate (Fe3Al2(SiO4)3)) — metamorphic

Almandine Garnet

Iron aluminum silicate (Fe3Al2(SiO4)3)

Sapphire (Corundum (Al2O3)) — gemstone

Sapphire

Corundum (Al2O3)

Bornite (Peacock Ore) (Bornite (Cu5FeS4)) — mineral

Bornite (Peacock Ore)

Bornite (Cu5FeS4)

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

Magnetite

Iron(II,III) oxide (Fe3O4)

Bornite (Peacock Ore) (Bornite (Cu5FeS4)) — mineral

Bornite (Peacock Ore)

Bornite (Cu5FeS4)

Sodalite (Sodalite (Na8(Al6Si6O24)Cl2)) — mineral

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Feldspar (Feldspar (Orthoclase/Microcline)) — mineral

Feldspar

Feldspar (Orthoclase/Microcline)

Pyrite Nodules / Weathered Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite Nodules / Weathered Pyrite

Iron Sulfide (FeS2)

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

Blue Apatite

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

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Aventurine (likely Green Aventurine) (Silicon Dioxide (SiO2) with mineral inclusions) — Mineral/Mineraloid within a rock matrix

Aventurine (likely Green Aventurine)

Silicon Dioxide (SiO2) with mineral inclusions

Mineral/Mineraloid within a rock matrix

Quartz vein fragment (Quartz, silicon dioxide (SiO₂), likely milky to translucent quartz with iron-oxide or clay inclusions) — mineral

Quartz vein fragment

Quartz, silicon dioxide (SiO₂), likely milky to translucent quartz with iron-oxide or clay inclusions

Quartz-rich rock, possibly milky quartz or quartzite (Quartz (SiO₂); if quartzite, recrystallized quartz sandstone) — metamorphic

Quartz-rich rock, possibly milky quartz or quartzite

Quartz (SiO₂); if quartzite, recrystallized quartz sandstone

Likely quartz-rich stone (possibly milky quartz or quartzite) (Quartz, silicon dioxide (SiO₂), or quartzite if interlocking grains are present) — mineral

Likely quartz-rich stone (possibly milky quartz or quartzite)

Quartz, silicon dioxide (SiO₂), or quartzite if interlocking grains are present

Quartz with Host Rock Matrix (Silicon Dioxide (SiO2)) — mineral

Quartz with Host Rock Matrix

Silicon Dioxide (SiO2)

Magnetite (Lodestone) (Magnetite (Fe3O4)) — mineral

Magnetite (Lodestone)

Magnetite (Fe3O4)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Quartz (SiO2)) — mineral

Milky Quartz

Quartz (SiO2)

Lapis Lazuli (Lapis Lazuli (Rock composed mainly of lazurite, calcite, and pyrite)) — gemstone

Lapis Lazuli

Lapis Lazuli (Rock composed mainly of lazurite, calcite, and pyrite)

Graphite (Graphite (C)) — mineral

Graphite

Graphite (C)

Magnetite (Iron Ore) (Magnetite (Fe3O4)) — mineral

Magnetite (Iron Ore)

Magnetite (Fe3O4)

Magnetite (Iron Ore) (Magnetite (Fe3O4)) — mineral

Magnetite (Iron Ore)

Magnetite (Fe3O4)

Magnetite (potentially Hematite) (Magnetite (Fe₃O₄)) — mineral

Magnetite (potentially Hematite)

Magnetite (Fe₃O₄)

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

Ruby (Corundum)

Aluminum oxide (Al2O3) with Chromium traces

Blue Calcite (Calcium Carbonate (CaCO3)) — mineral

Blue Calcite

Calcium Carbonate (CaCO3)

Magnetite-rich Iron Ore (Magnetite (Fe3O4)) — mineral

Magnetite-rich Iron Ore

Magnetite (Fe3O4)

Garnet (Almandine-Pyrope group, X3Y2(SiO4)3) — mineral

Garnet

Almandine-Pyrope group, X3Y2(SiO4)3

Quartz pebble with iron staining (Silicon dioxide (SiO2) with iron oxide inclusions) — mineral

Quartz pebble with iron staining

Silicon dioxide (SiO2) with iron oxide inclusions

Quartz pebble (Silicon dioxide (SiO2)) — mineral

Quartz pebble

Silicon dioxide (SiO2)

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

Blue Apatite

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

Sugilite (Sugilite (KNa2(Fe,Mn,Al)2Li3Si12O30)) — mineral

Sugilite

Sugilite (KNa2(Fe,Mn,Al)2Li3Si12O30)