Rock Identifier

Category

Sedimentary Or Metamorphic (Low Grade)

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

Biotite Schist with Garnet (Garnet-Biotite Schist) — metamorphic

Biotite Schist with Garnet

Garnet-Biotite Schist

metamorphic
Amber (Succinite (Formula: C10H16O)) — Organic Mineraloid

Amber

Succinite (Formula: C10H16O)

Organic Mineraloid
Amethyst (as a jewelry accent) (Amethyst (Silicon Dioxide SiO2 with Iron impurities)) — mineral

Amethyst (as a jewelry accent)

Amethyst (Silicon Dioxide SiO2 with Iron impurities)

mineral
Amber (Succinite (Resin C10H16O)) — mineral

Amber

Succinite (Resin C10H16O)

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

Green Aventurine

Aventurine Quartz (SiO2 with inclusions of Fuchsite)

metamorphic
Kyanite (Kyanite (Al2SiO5)) — mineral

Kyanite

Kyanite (Al2SiO5)

mineral
Carnelian (Chalcedony (cryptocrystalline quartz), SiO2) — Mineral

Carnelian

Chalcedony (cryptocrystalline quartz), SiO2

Mineral
Pumice (Pumice (Amorphous volcanic glass)) — igneous

Pumice

Pumice (Amorphous volcanic glass)

igneous
Pumice (Volcanic Rock) (Vesicular volcanic rock (composed largely of amorphous volcanic glass)) — igneous

Pumice (Volcanic Rock)

Vesicular volcanic rock (composed largely of amorphous volcanic glass)

igneous
Pumice (Pumice (Amorphous volcanic glass)) — igneous

Pumice

Pumice (Amorphous volcanic glass)

igneous
Man-made Synthetic Material (Plastic/Composite) (Acrylonitrile Butadiene Styrene (ABS) or High-Impact Polystyrene (HIPS)) — Non-geological / Synthetic

Man-made Synthetic Material (Plastic/Composite)

Acrylonitrile Butadiene Styrene (ABS) or High-Impact Polystyrene (HIPS)

Non-geological / Synthetic
Pumice (Pumicite / Vesicular Rhyolite) — igneous

Pumice

Pumicite / Vesicular Rhyolite

igneous
Garnet (Almandine) (Almandine (Fe3Al2(SiO4)3)) — mineral

Garnet (Almandine)

Almandine (Fe3Al2(SiO4)3)

mineral
Rhodonite (Manganese Silicate (Mn,Fe,Mg,Ca)SiO3) — Mineral

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

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

Milky Quartz

Silicon Dioxide (SiO2)

mineral
Quartzite Beach Pebble (Quartzite (primarily SiO2)) — metamorphic

Quartzite Beach Pebble

Quartzite (primarily SiO2)

metamorphic
Muscovite Schist (Muscovite (KAl2(AlSi3O10)(OH)2) in Schist) — metamorphic

Muscovite Schist

Muscovite (KAl2(AlSi3O10)(OH)2) in Schist

metamorphic
Mica Schist with Garnet (Garnetiferous Mica Schist) — metamorphic

Mica Schist with Garnet

Garnetiferous Mica Schist

metamorphic
Citrine (Quartz (SiO2) - variety Citrine) — Mineral

Citrine

Quartz (SiO2) - variety Citrine

Mineral
Ruby in Zoisite (Anyolite (Ruby in Zoisite)) — metamorphic

Ruby in Zoisite

Anyolite (Ruby in Zoisite)

metamorphic
Mica Schist (Mica Schist (primarily Muscovite and Biotite composition)) — metamorphic

Mica Schist

Mica Schist (primarily Muscovite and Biotite composition)

metamorphic
Aventurine (Silicon Dioxide (SiO2) with inclusions of Fuchsite mica) — metamorphic

Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite mica

metamorphic
Ferruginous Quartz on Ironstone (Silicon Dioxide (SiO2) with Hematite (Fe2O3)) — metamorphic

Ferruginous Quartz on Ironstone

Silicon Dioxide (SiO2) with Hematite (Fe2O3)

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

Fluorite

Fluorite (Calcium Fluoride, CaF2)

mineral
Almandine Garnet (Iron aluminum silicate - Fe3Al2(SiO4)3) — metamorphic

Almandine Garnet

Iron aluminum silicate - Fe3Al2(SiO4)3

metamorphic
Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

mineral
Chrysoprase (Nickel-bearing Chalcedony (SiO2 with Ni impurities)) — mineral

Chrysoprase

Nickel-bearing Chalcedony (SiO2 with Ni impurities)

mineral
Basalt (Basalt (Mafic Extrusive Rock)) — igneous

Basalt

Basalt (Mafic Extrusive Rock)

igneous
Bloodstone (Heliotrope) (Silicon Dioxide (SiO2) with inclusions of Iron Oxide) — mineral

Bloodstone (Heliotrope)

Silicon Dioxide (SiO2) with inclusions of Iron Oxide

mineral
Chalcedony (Chalcedony (SiO2)) — mineral

Chalcedony

Chalcedony (SiO2)

mineral
Marble (Recrystallized Calcite (CaCO3) / Marble) — metamorphic

Marble

Recrystallized Calcite (CaCO3) / Marble

metamorphic
Kyanite in Quartz (Kyanite (Al2SiO5) with Quartz (SiO2)) — metamorphic

Kyanite in Quartz

Kyanite (Al2SiO5) with Quartz (SiO2)

metamorphic
Amethyst (Quartz variety; chemical formula: SiO₂ (silicon dioxide) with Fe³⁺ impurities) — Mineral

Amethyst

Quartz variety; chemical formula: SiO₂ (silicon dioxide) with Fe³⁺ impurities

Mineral
Yellow Quartzite Pebble (Quartzite (SiO2)) — metamorphic

Yellow Quartzite Pebble

Quartzite (SiO2)

metamorphic
Septarian Nodule (Dragon Stone) (Septarian concretion (Complex of Calcite, Aragonite, and Limestone/Clay)) — sedimentary

Septarian Nodule (Dragon Stone)

Septarian concretion (Complex of Calcite, Aragonite, and Limestone/Clay)

sedimentary
Banded Iron Formation (Red Jasper and Hematite Chert) (Banded Iron Formation (BIF); Fe2O3 (Hematite) + SiO2 (Quartz/Jasper)) — sedimentary

Banded Iron Formation (Red Jasper and Hematite Chert)

Banded Iron Formation (BIF); Fe2O3 (Hematite) + SiO2 (Quartz/Jasper)

sedimentary
Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

mineral
Amphibolite (specifically Hornblende Schist/Gneiss) (Amphibole-rich Metamorphic Rock) — metamorphic

Amphibolite (specifically Hornblende Schist/Gneiss)

Amphibole-rich Metamorphic Rock

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

Yellow Aventurine (or Citrine-colored Quartz)

Silicon Dioxide (SiO2) with inclusions

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

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

Orange Calcite

Calcium Carbonate (CaCO3)

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

mineral