Rock Identifier

Category

Sedimentary And Metamorphic Minerals

Browse sedimentary and metamorphic minerals specimens identified by the Rock Identifier community.

Learn about Sedimentary And Metamorphic Minerals in the encyclopedia

Metabasalt

Coal

Metagabbro

Claystone

Calc-Silicate Rock

Calc-Silicate Rock

Shale

Eltyubyuite

Black Shale

Marl

Paracelsian

Schist

Kokchetavite

Quartz-rich gneiss (Banded quartz–feldspar–mica gneiss; commonly containing biotite and muscovite) — metamorphic

Quartz-rich gneiss

Banded quartz–feldspar–mica gneiss; commonly containing biotite and muscovite

Mica Schist (Mica Schist (KAl2(AlSi3O10)(OH)2)) — metamorphic

Mica Schist

Mica Schist (KAl2(AlSi3O10)(OH)2)

Marble (Metamorphosed Limestone (CaCO3)) — metamorphic

Marble

Metamorphosed Limestone (CaCO3)

Yellow Aventurine (or Citrine-colored Quartz) (Silicon Dioxide (SiO2) with inclusions) — metamorphic

Yellow Aventurine (or Citrine-colored Quartz)

Silicon Dioxide (SiO2) with inclusions

Garnet Schist (Almandine-Garnet Schist) — metamorphic

Garnet Schist

Almandine-Garnet Schist

Banded gneiss (Foliated quartz–feldspar gneiss, likely biotite-bearing) — metamorphic

Banded gneiss

Foliated quartz–feldspar gneiss, likely biotite-bearing

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

Blue Apatite

Calcium Fluorophosphate - Ca5(PO4)3F

Gneiss (Metamorphic Cobble) (Gneiss) — metamorphic

Gneiss (Metamorphic Cobble)

Gneiss

Quartz Pebble (Silicon dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon dioxide (SiO2)

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

Gneiss

Gneiss (High-grade Metamorphic Rock)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Slate (Foliated Metamorphic Slate) — metamorphic

Slate

Foliated Metamorphic Slate

Tiger iron slab (likely polished banded iron formation) (Banded iron formation (BIF), chiefly hematite/magnetite, quartz, and iron-rich amphibole or jasper) — metamorphic

Tiger iron slab (likely polished banded iron formation)

Banded iron formation (BIF), chiefly hematite/magnetite, quartz, and iron-rich amphibole or jasper

Slate (Slate; predominantly fine-grained phyllosilicates (muscovite/illite, chlorite) with quartz and feldspar) — metamorphic

Slate

Slate; predominantly fine-grained phyllosilicates (muscovite/illite, chlorite) with quartz and feldspar

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

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Weathered iron-rich rock, likely shale or slate (Probably ferruginous shale (iron-oxide-stained mudstone); exact identification requires testing) — sedimentary

Weathered iron-rich rock, likely shale or slate

Probably ferruginous shale (iron-oxide-stained mudstone); exact identification requires testing

Banded Gneiss (Gneiss) — metamorphic

Banded Gneiss

Gneiss

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Graphite (Graphite (Native Carbon), Formula: C) — Metamorphic

Graphite

Graphite (Native Carbon), Formula: C

Weathered gray metamorphic rock, likely slate or phyllite (Fine-grained foliated metamorphic rock; commonly quartz–mica–chlorite, possibly chlorite phyllite) — metamorphic

Weathered gray metamorphic rock, likely slate or phyllite

Fine-grained foliated metamorphic rock; commonly quartz–mica–chlorite, possibly chlorite phyllite

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

Gneiss

Gneiss (High-grade Metamorphic Rock)

Schist (Metamorphic Rock (Schist)) — metamorphic

Schist

Metamorphic Rock (Schist)

Likely quartz-rich pebbles (Quartz (SiO₂), possibly milky quartz or quartzite; identification is uncertain from the blurry image) — mineral

Likely quartz-rich pebbles

Quartz (SiO₂), possibly milky quartz or quartzite; identification is uncertain from the blurry image

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

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

Quartz (Milky/Clear variety)

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Likely garnet-bearing schist (Mica schist, possibly garnet-bearing; exact identification requires closer examination) — metamorphic

Likely garnet-bearing schist

Mica schist, possibly garnet-bearing; exact identification requires closer examination

Unidentified small rock fragment (Likely quartz-rich material; exact identification is indeterminate from the image) — mineral

Unidentified small rock fragment

Likely quartz-rich material; exact identification is indeterminate from the image

Quartz Crystal (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal

Silicon Dioxide (SiO2)

Quartz (Rose or Milky Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Rose or Milky Quartz)

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Yellow/Orange variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Yellow/Orange variety)

Silicon Dioxide (SiO2)

Gneiss (Gneissic Metamorphic Rock) — metamorphic

Gneiss

Gneissic Metamorphic Rock

Likely weathered metamorphic rock (quartzite or schist) (Quartz-rich foliated metamorphic rock; exact identification requires testing) — metamorphic

Likely weathered metamorphic rock (quartzite or schist)

Quartz-rich foliated metamorphic rock; exact identification requires testing

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Likely mica schist (Mica-rich schist, probably biotite–quartz–feldspar schist) — metamorphic

Likely mica schist

Mica-rich schist, probably biotite–quartz–feldspar schist