Rock Identifier

Category

Sedimentary Or Metamorphic (Low Grade)

Browse sedimentary or metamorphic (low grade) specimens identified by the Rock Identifier community.

Learn about Sedimentary Or Metamorphic (Low Grade) in the encyclopedia

Greenschist

Slate

Lignite

Calcilutite

Calcirudite

Grape Garnet

Grape Agate

Granulite

Chlorite Schist

Chlorite Schist

Turbidite

Conglomerate

Greenstone

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Petrified Wood (Silicified Wood (SiO2)) — metamorphic

Petrified Wood

Silicified Wood (SiO2)

Blue-green fluorite crystal (Fluorite (calcium fluoride, CaF₂)) — mineral

Blue-green fluorite crystal

Fluorite (calcium fluoride, CaF₂)

Bloodstone (Heliotrope) (Silicon Dioxide (SiO2) with inclusions of Hematite) — mineral

Bloodstone (Heliotrope)

Silicon Dioxide (SiO2) with inclusions of Hematite

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

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Ruby (Corundum (Al2O3 with Chromium impurities)) — mineral

Ruby

Corundum (Al2O3 with Chromium impurities)

Serpentine ((Mg,Fe)3Si2O5(OH)4) — metamorphic

Serpentine

(Mg,Fe)3Si2O5(OH)4

Green Jadeite (NaAlSi2O6 (Sodium Aluminum Silicate)) — metamorphic

Green Jadeite

NaAlSi2O6 (Sodium Aluminum Silicate)

Greenschist (Greenschist (Chlorite Schist)) — metamorphic

Greenschist

Greenschist (Chlorite Schist)

Serpentinite (Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4) — metamorphic

Serpentinite

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Red Jasper (SiO2 (Silicon Dioxide with Iron inclusions)) — sedimentary

Red Jasper

SiO2 (Silicon Dioxide with Iron inclusions)

Anthracite Coal (Anthracite (high-rank coal)) — metamorphic

Anthracite Coal

Anthracite (high-rank coal)

Rose Quartz (Silicon Dioxide (SiO2)) — mineral

Rose Quartz

Silicon Dioxide (SiO2)

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

Milky Quartz with Iron Inclusions

Silicon Dioxide (SiO2)

Orange Quartz (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — mineral

Orange Quartz

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Fuchsite Gneiss or Schist (Muscovite (variety Fuchsite) within Metamorphic Host Rock) — metamorphic

Fuchsite Gneiss or Schist

Muscovite (variety Fuchsite) within Metamorphic Host Rock

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

Clear Quartz Point

Silicon Dioxide (SiO2)

Basalt (Greenstone/Water-worn Pebble) (Basalt (containing Chlorite/Epidote)) — igneous

Basalt (Greenstone/Water-worn Pebble)

Basalt (containing Chlorite/Epidote)

Basalt (Greenstone) (Basalt with chlorite/epidote (often referred to as Greenstone)) — igneous

Basalt (Greenstone)

Basalt with chlorite/epidote (often referred to as Greenstone)

Serpentine (Antigorite, Lizardite, or Chrysotile (Mg, Fe)3Si2O5(OH)4) — metamorphic

Serpentine

Antigorite, Lizardite, or Chrysotile (Mg, Fe)3Si2O5(OH)4

Epidote with quartz/feldspar (Epidote, Ca2(Al,Fe)3(SiO4)3(OH)) — metamorphic

Epidote with quartz/feldspar

Epidote, Ca2(Al,Fe)3(SiO4)3(OH)

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

Clear Quartz Crystal

Quartz (Silicon Dioxide, SiO2)

Quartz (Milky/Common variant) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Common variant)

Silicon Dioxide (SiO2)

Quartzite (River Pebble) (Metamorphosed Quartz Sandstone (SiO2)) — metamorphic

Quartzite (River Pebble)

Metamorphosed Quartz Sandstone (SiO2)

Iron-Stained Quartzite (Quartzite (chemically SiO2 with Fe2O3/FeO(OH) staining)) — metamorphic

Iron-Stained Quartzite

Quartzite (chemically SiO2 with Fe2O3/FeO(OH) staining)

Red Jasper (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Serpentinite (Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4) — metamorphic

Serpentinite

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Green Fluorite (Fluorite (Calcium Fluoride, CaF2)) — mineral

Green Fluorite

Fluorite (Calcium Fluoride, CaF2)

Ambergris (Ambra grisea) — Organic (often found by beachcombers)

Ambergris

Ambra grisea

Organic (often found by beachcombers)

Mixed Tumbled Stones (Mostly Agate, Jasper, and Quartz) (Silicon Dioxide (SiO2)) — sedimentary and metamorphic minerals

Mixed Tumbled Stones (Mostly Agate, Jasper, and Quartz)

Silicon Dioxide (SiO2)

sedimentary and metamorphic minerals

Sillimanite (Al2O3(SiO2)) — mineral

Sillimanite

Al2O3(SiO2)

Banded Serpentine (Serpentine group (subgroup Lizardite or Antigorite) - Mg3Si2O5(OH)4) — metamorphic

Banded Serpentine

Serpentine group (subgroup Lizardite or Antigorite) - Mg3Si2O5(OH)4

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

Clear Quartz Crystal

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Covellite (Covellite (CuS)) — mineral

Covellite

Covellite (CuS)

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

Hematite (Specularite)

Fe2O3 (Iron(III) oxide)

Alexandrite (or Quartz with Chrysoberyl/Phenakite crystal form / Feldspar inclusions) (Chrysoberyl (BeAl2O4) or Quartz (SiO2)) — mineral

Alexandrite (or Quartz with Chrysoberyl/Phenakite crystal form / Feldspar inclusions)

Chrysoberyl (BeAl2O4) or Quartz (SiO2)

Garnet amphibolite / Metamorphic Rock (Garnet Amphibolite (Hornblende - Almandine schist/gneiss)) — metamorphic

Garnet amphibolite / Metamorphic Rock

Garnet Amphibolite (Hornblende - Almandine schist/gneiss)

Unakite (Epidotized Granite) — metamorphic

Unakite

Epidotized Granite

Potassium Feldspar (Orthoclase) (Orthoclase (KAlSi3O8)) — mineral

Potassium Feldspar (Orthoclase)

Orthoclase (KAlSi3O8)

Jade Dice (Nephrite / Jadeite (Ca2(Mg,Fe)5Si8O22(OH)2 or NaAlSi2O6)) — gemstone

Jade Dice

Nephrite / Jadeite (Ca2(Mg,Fe)5Si8O22(OH)2 or NaAlSi2O6)

Jadeite Bangle (NaAl(Si2O6)) — gemstone

Jadeite Bangle

NaAl(Si2O6)