Rock Identifier

Category

Sedimentary Or Metamorphic Derived

Browse sedimentary or metamorphic derived specimens identified by the Rock Identifier community.

Learn about Sedimentary Or Metamorphic Derived in the encyclopedia

Khondalite

Calc-schist

Goldmanite

Oregon Opal

Orendite

Orthoclase

Orca Agate

Orange Opal

Peacock Ore

Orange Garnet

Orange Obsidian

Orange Calcite

Schist (Mica Schist (Metamorphic Rock)) — metamorphic

Schist

Mica Schist (Metamorphic Rock)

Weathered brown river pebble, likely sandstone or iron-rich quartzite (Indeterminate; probable quartz-rich sandstone (quartz and iron-oxide cement)) — sedimentary

Weathered brown river pebble, likely sandstone or iron-rich quartzite

Indeterminate; probable quartz-rich sandstone (quartz and iron-oxide cement)

Red Jasper (Silicon Dioxide (SiO₂)) — sedimentary

Red Jasper

Silicon Dioxide (SiO₂)

Amber (likely a small rough amber piece) (Fossilized plant resin; amber is an organic mineraloid, not a crystalline mineral) — gemstone

Amber (likely a small rough amber piece)

Fossilized plant resin; amber is an organic mineraloid, not a crystalline mineral

Hematite (Iron(III) oxide (Fe2O3)) — mineral

Hematite

Iron(III) oxide (Fe2O3)

Hematite Nodule (Hematite (Fe2O3)) — mineral

Hematite Nodule

Hematite (Fe2O3)

Schist (Biotite Schist) (Biotite-bearing Schist (K(Mg,Fe)3AlSi3O10(F,OH)2)) — metamorphic

Schist (Biotite Schist)

Biotite-bearing Schist (K(Mg,Fe)3AlSi3O10(F,OH)2)

Blue Calcite (Calcium Carbonate (CaCO3)) — mineral

Blue Calcite

Calcium Carbonate (CaCO3)

Mica Schist (Mica Schist (Muscovite subclass)) — metamorphic

Mica Schist

Mica Schist (Muscovite subclass)

Mica Schist with Quartz (Mica Schist (principally Muscovite and Biotite with Quartz veins)) — metamorphic

Mica Schist with Quartz

Mica Schist (principally Muscovite and Biotite with Quartz veins)

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

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Green Aventurine (Silicon Dioxide (SiO2) with Fuchsite inclusions) — metamorphic

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Hematite (Iron(III) oxide (Fe2O3)) — mineral

Hematite

Iron(III) oxide (Fe2O3)

Hematite (likely Botryoidal or Specularite variant) (Iron(III) oxide (Fe2O3)) — mineral

Hematite (likely Botryoidal or Specularite variant)

Iron(III) oxide (Fe2O3)

Dark foliated metamorphic rock, likely slate or phyllite (Fine-grained metamorphosed mudstone; exact identification is uncertain from the photograph) — metamorphic

Dark foliated metamorphic rock, likely slate or phyllite

Fine-grained metamorphosed mudstone; exact identification is uncertain from the photograph

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Hematite (Iron(III) oxide (Fe2O3)) — mineral

Hematite

Iron(III) oxide (Fe2O3)

Quartz-rich river pebble, likely milky quartz (Milky quartz (SiO₂), possibly a quartzite or quartz-rich silicate pebble) — mineral

Quartz-rich river pebble, likely milky quartz

Milky quartz (SiO₂), possibly a quartzite or quartz-rich silicate pebble

Mica Schist (Crystalline Schist (often containing Muscovite, Biotite, and Quartz)) — metamorphic

Mica Schist

Crystalline Schist (often containing Muscovite, Biotite, and Quartz)

Rounded gray river cobble (Likely fine-grained sandstone, siltstone, or metamorphosed equivalent; exact identification requires a fresh surface and tests) — sedimentary

Rounded gray river cobble

Likely fine-grained sandstone, siltstone, or metamorphosed equivalent; exact identification requires a fresh surface and tests

Marble (Recrystallized Calcite (CaCO3)) — metamorphic

Marble

Recrystallized Calcite (CaCO3)

Orthoclase Feldspar (Orthoclase (KAlSi3O8)) — mineral

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

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

Epidote

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

Rounded stream pebbles (likely quartzite and iron-stained sandstone) (Quartzite (SiO₂), with a possible ferruginous sandstone pebble (quartz + iron oxides)) — metamorphic

Rounded stream pebbles (likely quartzite and iron-stained sandstone)

Quartzite (SiO₂), with a possible ferruginous sandstone pebble (quartz + iron oxides)

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

Milky quartz pebble

Quartz, silicon dioxide (SiO₂)

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

Green Aventurine

Aventurine Quartz (SiO2 with inclusions of Fuchsite)

Mica Schist (Mica Schist (Composition: Muscovite, Biotite, Quartz, Feldspar)) — metamorphic

Mica Schist

Mica Schist (Composition: Muscovite, Biotite, Quartz, Feldspar)

Hematite (Iron(III) oxide (Fe2O3)) — mineral

Hematite

Iron(III) oxide (Fe2O3)

Schist (Schist (Foliated Metamorphic Rock)) — metamorphic

Schist

Schist (Foliated Metamorphic Rock)

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

Mica Schist (Mica Schist (Schistose metamorphic rock rich in Muscovite/Biotite)) — metamorphic

Mica Schist

Mica Schist (Schistose metamorphic rock rich in Muscovite/Biotite)

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

Blue Apatite

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

Jasper (Silicon dioxide (SiO2) with impurities) — sedimentary

Jasper

Silicon dioxide (SiO2) with impurities

Hematite (Iron (III) oxide (Fe2O3)) — mineral

Hematite

Iron (III) oxide (Fe2O3)

Likely polished quartz or quartz-rich pebble (Quartz (silicon dioxide, SiO₂), possibly milky quartz) — mineral

Likely polished quartz or quartz-rich pebble

Quartz (silicon dioxide, SiO₂), possibly milky quartz

Micaceous Schist (Mica Schist (primarily Muscovite or Biotite KAl2(AlSi3O10)(OH)2)) — metamorphic

Micaceous Schist

Mica Schist (primarily Muscovite or Biotite KAl2(AlSi3O10)(OH)2)

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

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Gravel / Small Pebble (Rock Fragment (Gravel)) — sedimentary

Gravel / Small Pebble

Rock Fragment (Gravel)

Marble (Recrystallized Calcite (CaCO3)) — metamorphic

Marble

Recrystallized Calcite (CaCO3)

Schist with Quartz Vein (Mica Schist with SiO2 vein) — metamorphic

Schist with Quartz Vein

Mica Schist with SiO2 vein

Hematite (Iron(III) oxide (Fe2O3)) — mineral

Hematite

Iron(III) oxide (Fe2O3)

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

Mica Schist

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