Rock Identifier

Category

Metamorphic (Modified)

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

Learn about Metamorphic (Modified) in the encyclopedia

Metabasalt

Eulysite

Anthracite

Metaquartzite

Slate

Marble

Hornfels

Metarhyolite

Cordierite Hornfels

Cordierite Hornfels

Metagabbro

Calc-Silicate Rock

Calc-Silicate Rock

Chlorite Schist

Chlorite Schist

Jadeite and Assorted Corundum (Ruby/Sapphire) / Beryl (Emerald) (Jadeite (NaAlSi2O6), Ruby/Sapphire (Al2O3), Emerald (Be3Al2(SiO3)6)) — mineral

Jadeite and Assorted Corundum (Ruby/Sapphire) / Beryl (Emerald)

Jadeite (NaAlSi2O6), Ruby/Sapphire (Al2O3), Emerald (Be3Al2(SiO3)6)

Rhodonite (Manganese Inosilicate (MnSiO3), often with Ca, Fe, Mg, Zn) — Mineral

Rhodonite

Manganese Inosilicate (MnSiO3), often with Ca, Fe, Mg, Zn

Rounded gray metamorphic pebble, likely quartzite or gneiss (Quartzite (quartz-rich rock) or fine-grained gneiss; exact identification requires testing) — metamorphic

Rounded gray metamorphic pebble, likely quartzite or gneiss

Quartzite (quartz-rich rock) or fine-grained gneiss; exact identification requires testing

Greenschist (Greenschist (Chlorite-actinolite schist)) — metamorphic

Greenschist

Greenschist (Chlorite-actinolite schist)

Almandine Garnet (Fe3Al2(SiO4)3) — mineral

Almandine Garnet

Fe3Al2(SiO4)3

Greenschist (Chlorite schist) — metamorphic

Greenschist

Chlorite schist

Milky quartz (Quartz (silicon dioxide, SiO₂)) — mineral

Milky quartz

Quartz (silicon dioxide, SiO₂)

Greenish Metamorphic Rock (likely containing epidote or chlorite) (Metamorphic rock, possibly epidosite or greenstone) — Metamorphic

Greenish Metamorphic Rock (likely containing epidote or chlorite)

Metamorphic rock, possibly epidosite or greenstone

Rounded gray river pebble, likely quartzite or fine-grained metamorphic rock (Quartzite (probable; chiefly recrystallized quartz, SiO₂)) — metamorphic

Rounded gray river pebble, likely quartzite or fine-grained metamorphic rock

Quartzite (probable; chiefly recrystallized quartz, SiO₂)

Banded gneissic rock (Gneiss, likely quartz–feldspar–biotite gneiss) — metamorphic

Banded gneissic rock

Gneiss, likely quartz–feldspar–biotite gneiss

Quartz with Epidote (Silicon dioxide (SiO2) with Calcium aluminum iron silicate (Ca2Al2(Fe3+;Al)(SiO4)(Si2O7)O(OH))) — mineral

Quartz with Epidote

Silicon dioxide (SiO2) with Calcium aluminum iron silicate (Ca2Al2(Fe3+;Al)(SiO4)(Si2O7)O(OH))

Rhodonite (Manganese Inosilicate (MnSiO3)) — Mineral

Rhodonite

Manganese Inosilicate (MnSiO3)

Iolite (Cordierite) (Cordierite (Magnesium Aluminum Silicate), Mg2Al4Si5O18) — Mineral

Iolite (Cordierite)

Cordierite (Magnesium Aluminum Silicate), Mg2Al4Si5O18

Greenstone / Greenschist (Greenschist (containing Chlorite, Epidote, Actinolite)) — metamorphic

Greenstone / Greenschist

Greenschist (containing Chlorite, Epidote, Actinolite)

Schist (Schist) — Metamorphic

Schist

Schist

Yellow Sapphire (Pukhraj) (Corundum (Al2O3)) — gemstone

Yellow Sapphire (Pukhraj)

Corundum (Al2O3)

Quartz (Silicon dioxide (SiO2)) — mineral

Quartz

Silicon dioxide (SiO2)

Weathered quartz-rich metamorphic rock, likely quartzite (Quartzite (mostly microcrystalline quartz, SiO₂), possibly altered sandstone) — metamorphic

Weathered quartz-rich metamorphic rock, likely quartzite

Quartzite (mostly microcrystalline quartz, SiO₂), possibly altered sandstone

Quartz-rich metamorphic rock, likely quartzite (Quartzite; predominantly crystalline SiO₂, possibly with mica or iron-oxide impurities) — metamorphic

Quartz-rich metamorphic rock, likely quartzite

Quartzite; predominantly crystalline SiO₂, possibly with mica or iron-oxide impurities

Quartzite (Quartzite) — metamorphic

Quartzite

Quartzite

Slate (Foliated Metamorphic Rock) — metamorphic

Slate

Foliated Metamorphic Rock

Quartzite Pebble (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite Pebble

Metamorphic Quartzite (SiO2)

Quartzite Pebble (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite Pebble

Metamorphic Quartzite (SiO2)

Quartzite River Pebble (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite River Pebble

Metamorphic Quartzite (SiO2)

Quartzite River Rock (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite River Rock

Metamorphic Quartzite (SiO2)

Foliated Gneiss (Gneiss (Metamorphic Rock)) — metamorphic

Foliated Gneiss

Gneiss (Metamorphic Rock)

Quartzite Pebble (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite Pebble

Metamorphic Quartzite (SiO2)

Yellow Quartzite Pitting Pebble (Metamorphic Quartzite (SiO2)) — metamorphic

Yellow Quartzite Pitting Pebble

Metamorphic Quartzite (SiO2)

Banded Gneiss (Gneiss (Metamorphic Rock)) — metamorphic

Banded Gneiss

Gneiss (Metamorphic Rock)

Banded Gneiss (Gneiss (Metamorphic Rock)) — metamorphic

Banded Gneiss

Gneiss (Metamorphic Rock)

River Cobble (Quartzite or Chert) (Metamorphic Quarzite (SiO2)) — metamorphic

River Cobble (Quartzite or Chert)

Metamorphic Quarzite (SiO2)

Quartzite River Rock (Metamorphic Rock (Quartzite)) — metamorphic

Quartzite River Rock

Metamorphic Rock (Quartzite)

Slate (Foliated Metamorphic Rock) — metamorphic

Slate

Foliated Metamorphic Rock

Quartzite Pebble (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite Pebble

Metamorphic Quartzite (SiO2)

Red Quartzite (Metamorphic Quartzite (SiO2)) — metamorphic

Red Quartzite

Metamorphic Quartzite (SiO2)

Gneiss (Gneiss (Metamorphic Rock)) — metamorphic

Gneiss

Gneiss (Metamorphic Rock)

Banded Gneiss (Gneiss (Metamorphic Rock)) — metamorphic

Banded Gneiss

Gneiss (Metamorphic Rock)

Quartzite with inclusions (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite with inclusions

Metamorphic Quartzite (SiO2)

Schist (Schist (Metamorphic Rock)) — metamorphic

Schist

Schist (Metamorphic Rock)

Quartzite (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite

Metamorphic Quartzite (SiO2)

Quartzite (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite

Metamorphic Quartzite (SiO2)

Quartzite (Metamorphic Quartz Sandstone) — metamorphic

Quartzite

Metamorphic Quartz Sandstone