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

Small brown mineral fragment (Unidentified; the image lacks enough detail for a reliable species-level identification) — mineral

Small brown mineral fragment

Unidentified; the image lacks enough detail for a reliable species-level identification

Faceted Gemstones (Mixed) (Various (e.g., Corundum, Beryl, Quartz, or synthetic equivalents)) — gemstone

Faceted Gemstones (Mixed)

Various (e.g., Corundum, Beryl, Quartz, or synthetic equivalents)

Quartz pebble (Silicon dioxide (SiO2)) — mineral

Quartz pebble

Silicon dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz with Iron Inclusions (Silicon Dioxide (SiO2)) — mineral

Milky Quartz with Iron Inclusions

Silicon Dioxide (SiO2)

Black Tourmaline (Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)) — mineral

Black Tourmaline

Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)

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

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Clear Quartz Crystal (Silicon Dioxide (SiO2)) — mineral

Clear Quartz Crystal

Silicon Dioxide (SiO2)

Tumbled Stones Collection (Tiger's Eye, Snowflake Obsidian, Aventurine, etc.) (Silica minerals (primarily SiO2)) — mineral

Tumbled Stones Collection (Tiger's Eye, Snowflake Obsidian, Aventurine, etc.)

Silica minerals (primarily SiO2)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Yellow Quartz (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz

Silicon Dioxide (SiO2)

Citrine (Silicon Dioxide (SiO2)) — mineral

Citrine

Silicon Dioxide (SiO2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Smoky Quartz (with Iron Inclusions) (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz (with Iron Inclusions)

Silicon Dioxide (SiO2)

Clear Quartz / Rock Crystal (Silicon Dioxide (SiO2)) — mineral

Clear Quartz / Rock Crystal

Silicon Dioxide (SiO2)

Amethyst (Silicon Dioxide (SiO2) with iron impurities) — mineral

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal) (Crystalline Silicon Dioxide (SiO2)) — gemstone

Clear Quartz (Rock Crystal)

Crystalline Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Green Tourmaline (Verdelite) (Elbaite (Na(Li,Al)3Al6(BO3)3Si6O18(OH)4)) — mineral

Green Tourmaline (Verdelite)

Elbaite (Na(Li,Al)3Al6(BO3)3Si6O18(OH)4)

Weathered quartz-rich rock fragment (Indeterminate; likely quartz-bearing granitoid or quartzite) — mineral

Weathered quartz-rich rock fragment

Indeterminate; likely quartz-bearing granitoid or quartzite

Weathered, rounded polymictic pebble (likely volcanic or metamorphic rock) (Indeterminate; possibly altered basalt, greenstone, or epidote-bearing metamorphic rock) — igneous

Weathered, rounded polymictic pebble (likely volcanic or metamorphic rock)

Indeterminate; possibly altered basalt, greenstone, or epidote-bearing metamorphic rock

Quartz (Silicon dioxide (SiO2)) — mineral

Quartz

Silicon dioxide (SiO2)

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

Blue Apatite

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

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

Blue Calcite

Calcite (Calcium Carbonate, CaCO3)

Raw Emerald in Matrix (Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities) — mineral

Raw Emerald in Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Yellow Quartz (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz

Silicon Dioxide (SiO2)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz

Silicon Dioxide (SiO2)

Citrine Quartz (SiO2 (Silicon Dioxide with Iron impurities)) — mineral

Citrine Quartz

SiO2 (Silicon Dioxide with Iron impurities)

Emerald in Matrix (Beryl (Be3Al2Si6O18)) — mineral

Emerald in Matrix

Beryl (Be3Al2Si6O18)

Bornite (Copper Iron Sulfide (Cu5FeS4)) — mineral

Bornite

Copper Iron Sulfide (Cu5FeS4)

Quartz (Milky/Crystalline variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Crystalline variety)

Silicon Dioxide (SiO2)

Citrine (Silicon Dioxide (SiO2)) — mineral

Citrine

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Labradorite (Plagioclase Feldspar ((Ca, Na)(Al, Si)4O8)) — mineral

Labradorite

Plagioclase Feldspar ((Ca, Na)(Al, Si)4O8)

Clear Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Milky Quartz (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Inukshuk Rock Sculpture (composed of Granite, Slate, and Amethyst) (Silicon Dioxide (Amethyst portion, SiO2) with mixed silicate rock assemblage) — mineral

Inukshuk Rock Sculpture (composed of Granite, Slate, and Amethyst)

Silicon Dioxide (Amethyst portion, SiO2) with mixed silicate rock assemblage