Rock Identifier

Category

Sedimentary Or Igneous Fragment

Browse sedimentary or igneous fragment specimens identified by the Rock Identifier community.

Quartz with Iron Staining (Silicon Dioxide (SiO2)) — mineral

Quartz with Iron Staining

Silicon Dioxide (SiO2)

Brecciated Quartzite (Brecciated Quartzite) — Metamorphic

Brecciated Quartzite

Brecciated Quartzite

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

Quartz (Granular)

Silicon Dioxide (SiO2)

Cobalt Glass Slug (Man-made Glass) (Amorphous Silica with Cobalt Oxide (SiO2 + CoO)) — mineraloid

Cobalt Glass Slug (Man-made Glass)

Amorphous Silica with Cobalt Oxide (SiO2 + CoO)

Amber (Succinite (a variety of fossilized tree resin); chemical formula appx. C10H16O) — mineraloid

Amber

Succinite (a variety of fossilized tree resin); chemical formula appx. C10H16O

Quartz (Small Fragment) (Silicon Dioxide (SiO2)) — mineral

Quartz (Small Fragment)

Silicon Dioxide (SiO2)

Terrazzo (Synthetic Composite Rock) (Cementitious or Epoxy Resin-bound Aggregates) — Man-made metamorphic-style composite

Terrazzo (Synthetic Composite Rock)

Cementitious or Epoxy Resin-bound Aggregates

Man-made metamorphic-style composite

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

Marble

Recrystallized Calcite / Dolomite (CaCO3)

Quartzite Breccia (Brecciated Quartzite (SiO2)) — metamorphic

Quartzite Breccia

Brecciated Quartzite (SiO2)

Eclogite (Eclogite) — metamorphic

Eclogite

Eclogite

Amber (Succinite (organic hydrocarbon)) — mineraloid

Amber

Succinite (organic hydrocarbon)

Amethyst Geode Cathedral (Amethyst (Silicon Dioxide - SiO2 with Iron impurities)) — mineral

Amethyst Geode Cathedral

Amethyst (Silicon Dioxide - SiO2 with Iron impurities)

Milky Quartz Geode Fragment (Silicon Dioxide (SiO2)) — mineral

Milky Quartz Geode Fragment

Silicon Dioxide (SiO2)

Chondrite Meteorite (Ordinary Chondrite (L or H Type)) — Mineral

Chondrite Meteorite

Ordinary Chondrite (L or H Type)

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

Quartz (Smoky/Milky variant)

Silicon Dioxide (SiO2)

Nephrite Jade (Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)) — metamorphic

Nephrite Jade

Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)

Quartzite (Metamorphosed Quartz Sandstone (SiO2)) — metamorphic

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Chipped Glass/Plastic Fragment (Silicon dioxide (SiO2) for glass (amorphous) or various polymer compounds for plastic) — Man-made material (simulant/artifact)

Chipped Glass/Plastic Fragment

Silicon dioxide (SiO2) for glass (amorphous) or various polymer compounds for plastic

Man-made material (simulant/artifact)

Quartz (Microcrystalline Fragment) (Silicon Dioxide (SiO2)) — mineral

Quartz (Microcrystalline Fragment)

Silicon Dioxide (SiO2)

Cobalt Glass Slug (Cullet) (Man-made Silicate Glass with Cobalt Oxide (CoO)) — mineraloid

Cobalt Glass Slug (Cullet)

Man-made Silicate Glass with Cobalt Oxide (CoO)

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

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Mica Schist (Mica Schist (primarily Muscovite or Biotite within a foliated matrix)) — metamorphic

Mica Schist

Mica Schist (primarily Muscovite or Biotite within a foliated matrix)

Agate (Thunderegg segment) (Silicon dioxide (SiO2) - Microcrystalline Quartz/Chalcedony) — mineral

Agate (Thunderegg segment)

Silicon dioxide (SiO2) - Microcrystalline Quartz/Chalcedony

Quartz (Common Grains) (Silicon Dioxide (SiO2)) — mineral

Quartz (Common Grains)

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz with Iron Staining (Silicon Dioxide (SiO2)) — mineral

Quartz with Iron Staining

Silicon Dioxide (SiO2)

Quartz (Granular Milky Quartz fragment) (Silicon Dioxide (SiO2)) — mineral

Quartz (Granular Milky Quartz fragment)

Silicon Dioxide (SiO2)

Libyan Desert Glass (Impactite silica glass (SiO2)) — tektite (impact glass)

Libyan Desert Glass

Impactite silica glass (SiO2)

tektite (impact glass)

Amethyst (Druze) (Silicon Dioxide (SiO2) with iron impurities) — mineral

Amethyst (Druze)

Silicon Dioxide (SiO2) with iron impurities

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz and Mixed Gravel (Silicon Dioxide (SiO2) with minor impurities) — Mineral

Quartz and Mixed Gravel

Silicon Dioxide (SiO2) with minor impurities

Tiger's Eye (Mineral Collection) (Tiger's Eye (SiO2 with crocidolite inclusions)) — mineral

Tiger's Eye (Mineral Collection)

Tiger's Eye (SiO2 with crocidolite inclusions)

Ferruginous Quartz (Iron-stained Quartz) (Silicon Dioxide (SiO2) with Hematite/Limonite impurities) — mineral

Ferruginous Quartz (Iron-stained Quartz)

Silicon Dioxide (SiO2) with Hematite/Limonite impurities

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Pallasite Meteorite (Pallasite (Iron-Nickel Matrix with Olivine/Peridot inclusions)) — Mineral / Extraterrestrial Rock

Pallasite Meteorite

Pallasite (Iron-Nickel Matrix with Olivine/Peridot inclusions)

Mineral / Extraterrestrial Rock

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

Quartz (Clear Quartz)

Silicon Dioxide (SiO2)

Turquoise (Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)) — mineral

Turquoise

Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)

Slate (Low-grade Metamorphic Rock) — metamorphic

Slate

Low-grade Metamorphic Rock

Milky Quartz (Tumble Fragment) (Silicon Dioxide (SiO2)) — mineral

Milky Quartz (Tumble Fragment)

Silicon Dioxide (SiO2)

Blue Slag Glass (Anthropogenic Amorphous Silicon Dioxide) — mineral

Blue Slag Glass

Anthropogenic Amorphous Silicon Dioxide

Quartz (Quartzite fragment) (Silicon Dioxide (SiO2)) — mineral

Quartz (Quartzite fragment)

Silicon Dioxide (SiO2)