Rock Identifier

Category

Metamorphic Or Sedimentary Depending On Local Grade

Browse metamorphic or sedimentary depending on local grade specimens identified by the Rock Identifier community.

Ironstone Concretion (Siderite or Ferruginous Concretion (FeCO3 or Iron Oxides)) — sedimentary

Ironstone Concretion

Siderite or Ferruginous Concretion (FeCO3 or Iron Oxides)

sedimentary
Quartz (Chert/Chunky Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Quartz (Chert/Chunky Chalcedony)

Silicon Dioxide (SiO2)

mineral
Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

sedimentary
Yellow Ochre / Limonite (Limonite (FeO(OH)·nH2O)) — Mineral

Yellow Ochre / Limonite

Limonite (FeO(OH)·nH2O)

Mineral
Quartz (likely milky/rose quartz variety) (Quartz (SiO2 - Silicon Dioxide)) — Mineral

Quartz (likely milky/rose quartz variety)

Quartz (SiO2 - Silicon Dioxide)

Mineral
Moonstone (Orthoclase Feldspar (composed of alternate layers of orthoclase and albite), (K,Na)AlSi3O8) — mineral

Moonstone

Orthoclase Feldspar (composed of alternate layers of orthoclase and albite), (K,Na)AlSi3O8

mineral
Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

mineral
Red Garnet (Almandine (Fe3Al2(SiO4)3) or Pyrope (Mg3Al2(SiO4)3)) — mineral

Red Garnet

Almandine (Fe3Al2(SiO4)3) or Pyrope (Mg3Al2(SiO4)3)

mineral
Limonite (Iron Stone/Gossen) (Limonite (FeO(OH)·nH2O)) — mineral

Limonite (Iron Stone/Gossen)

Limonite (FeO(OH)·nH2O)

mineral
White Quartz Pebbles (Quartz (Silicon Dioxide, SiO2)) — Mineral

White Quartz Pebbles

Quartz (Silicon Dioxide, SiO2)

Mineral
Charoite (Charoite (Hydrated silicate of potassium, sodium, calcium, barium and strontium): (K,Sr,Ba)(Na,Ca)2[Si4O10](OH,f)·H2O) — metamorphic

Charoite

Charoite (Hydrated silicate of potassium, sodium, calcium, barium and strontium): (K,Sr,Ba)(Na,Ca)2[Si4O10](OH,f)·H2O

metamorphic
Concrete (Anthropogenic Sedimentary Rock (Hydrated Calcium Silicate)) — sedimentary (anthropogenic / man-made)

Concrete

Anthropogenic Sedimentary Rock (Hydrated Calcium Silicate)

sedimentary (anthropogenic / man-made)
Aquamarine and clear quartz (Aquamarine (Be3Al2Si6O18), Quartz (SiO2)) — Mineral

Aquamarine and clear quartz

Aquamarine (Be3Al2Si6O18), Quartz (SiO2)

Mineral
Jasper and Aquamarine (likely) (Jasper (Cryptocrystalline Quartz (SiO2)), Aquamarine (Beryl (Be3Al2Si6O18))) — Sedimentary (Jasper), Mineral (Aquamarine)

Jasper and Aquamarine (likely)

Jasper (Cryptocrystalline Quartz (SiO2)), Aquamarine (Beryl (Be3Al2Si6O18))

Sedimentary (Jasper), Mineral (Aquamarine)
Ferruginous Sandstone (Sandstone with Iron Oxide (Limonite/Goethite)) — sedimentary

Ferruginous Sandstone

Sandstone with Iron Oxide (Limonite/Goethite)

sedimentary
Satin Spar (commonly sold as Selenite) (Hydrous Calcium Sulfate (CaSO4·2H2O)) — mineral

Satin Spar (commonly sold as Selenite)

Hydrous Calcium Sulfate (CaSO4·2H2O)

mineral
Talc (Talc (Mg₃Si₄O₁₀(OH)₂)) — Mineral

Talc

Talc (Mg₃Si₄O₁₀(OH)₂)

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

mineral
Rhodochrosite (Manganese carbonate (MnCO3)) — mineral

Rhodochrosite

Manganese carbonate (MnCO3)

mineral
Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

mineral
Clear Quartz (Carved Merkaba) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz (Carved Merkaba)

Silicon Dioxide (SiO2)

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

Blue Calcite

Calcium Carbonate (CaCO3)

mineral
Quartz (Milk Quartz / Massive Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milk Quartz / Massive Quartz)

Silicon Dioxide (SiO2)

mineral
Yellow Aventurine (Silicon Dioxide with inclusions (SiO2 + Muscovite/Fuchsite)) — mineral

Yellow Aventurine

Silicon Dioxide with inclusions (SiO2 + Muscovite/Fuchsite)

mineral
Quartz (Milky/Crystal Variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Crystal Variety)

Silicon Dioxide (SiO2)

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

Quartz / Milky Quartz

Silicon Dioxide (SiO2)

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

Clear Quartz

Silicon Dioxide (SiO2)

mineral
Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

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

Clear Quartz

Silicon Dioxide (SiO2)

mineral
Pyrite (Fool's Gold) (Iron Sulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

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

Clear Quartz

Silicon Dioxide (SiO2)

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

Quartz (Milky/Clear variety)

Silicon Dioxide (SiO2)

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

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

Amethyst

Silicon Dioxide with Iron impurities (SiO2)

mineral
Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

mineral
Pyrite (Fool's Gold) (Iron Disulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

mineral
Sandstone (likely Quartzose Sandstone) (Arenite (primarily SiO2)) — sedimentary

Sandstone (likely Quartzose Sandstone)

Arenite (primarily SiO2)

sedimentary
Blue Chalcedony (Silicon Dioxide (SiO2)) — mineral

Blue Chalcedony

Silicon Dioxide (SiO2)

mineral
Pyrite in Quartz (Iron Sulfide (FeS2) in Silicon Dioxide (SiO2)) — mineral

Pyrite in Quartz

Iron Sulfide (FeS2) in Silicon Dioxide (SiO2)

mineral
Marble (Recrystallized Calcite (CaCO3)) — metamorphic

Marble

Recrystallized Calcite (CaCO3)

metamorphic
Lapis Lazuli (Complex mixture of minerals (lazurite, calcite, pyrite, and sodalite); (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2) — metamorphic

Lapis Lazuli

Complex mixture of minerals (lazurite, calcite, pyrite, and sodalite); (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2

metamorphic
Ferruginous Sandstone (Clastic sedimentary rock (SiO2 with Fe2O3/FeO(OH) cement)) — sedimentary

Ferruginous Sandstone

Clastic sedimentary rock (SiO2 with Fe2O3/FeO(OH) cement)

sedimentary