Rock Identifier

Category

Sedimentary Or Igneous Fragment

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

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Fluorite (Fluoride (Calcium Fluoride - CaF2)) — mineral

Fluorite

Fluoride (Calcium Fluoride - CaF2)

Blue Calcite (Calcium Carbonate (CaCO3)) — mineral

Blue Calcite

Calcium Carbonate (CaCO3)

Yellow Quartz (Citrine/Yellow Jasper) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine/Yellow Jasper)

Silicon Dioxide (SiO2)

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

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

Quartz (Milky/Crystalline variety)

Silicon Dioxide (SiO2)

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

Quartz (Milky/Clear variety)

Silicon Dioxide (SiO2)

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

Clear Quartz Crystal

Silicon Dioxide (SiO2)

Graphite (Graphite (Native Carbon), Formula: C) — Metamorphic

Graphite

Graphite (Native Carbon), Formula: C

Gneiss (Gneiss (Metamorphic rock composed primarily of quartz, feldspar, and mica)) — metamorphic

Gneiss

Gneiss (Metamorphic rock composed primarily of quartz, feldspar, and mica)

Pyrite (Iron Pyrites) (Iron Sulfide (FeS2)) — mineral

Pyrite (Iron Pyrites)

Iron Sulfide (FeS2)

Optical Calcite (Iceland Spar) (Calcite (Calcium Carbonate, CaCO3)) — mineral

Optical Calcite (Iceland Spar)

Calcite (Calcium Carbonate, CaCO3)

Quartz (Milky or White Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky or White Quartz)

Silicon Dioxide (SiO2)

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

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Chalcedony (Quartz Var.) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Quartz Var.)

Silicon Dioxide (SiO2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

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

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

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

Bull Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

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

Cloud Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Sandstone (Sandstone (clastic sedimentary rock, composed predominantly of sand-sized minerals or rock fragments)) — Sedimentary Rock

Sandstone

Sandstone (clastic sedimentary rock, composed predominantly of sand-sized minerals or rock fragments)

Sedimentary Rock

Schist (Mica Schist (Variable chemistry, often rich in muscovite and biotite)) — metamorphic

Schist

Mica Schist (Variable chemistry, often rich in muscovite and biotite)

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

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

Red Jasper (Silicon Dioxide (SiO2) with Hematite impurities) — mineral

Red Jasper

Silicon Dioxide (SiO2) with Hematite impurities

Quartz (Druzy on Matrix) (Silicon Dioxide (SiO2)) — mineral

Quartz (Druzy on Matrix)

Silicon Dioxide (SiO2)

Limonite after Pyrite (Prophecy Stone or Ironstone Concretion) (Goethite/Limonite pseudomorph after Pyrite/Marcasite (FeO(OH)·nH2O)) — mineral

Limonite after Pyrite (Prophecy Stone or Ironstone Concretion)

Goethite/Limonite pseudomorph after Pyrite/Marcasite (FeO(OH)·nH2O)

Red Jasper (Microcrystalline quartz (SiO2) with Hematite (Fe2O3) impurities) — sedimentary

Red Jasper

Microcrystalline quartz (SiO2) with Hematite (Fe2O3) impurities

Geode (Unopened) (Silica-rich concretion (SiO2)) — sedimentary

Geode (Unopened)

Silica-rich concretion (SiO2)

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

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Yellow Jasper (Silicon Dioxide (SiO2) with iron impurities) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with iron impurities

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Quartz (Milky/Iron-stained) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Iron-stained)

Silicon Dioxide (SiO2)

Asphalt (Bituminous pavement) (Bituminous concrete / Asphalt) — Sedimentary (Anthropogenic)

Asphalt (Bituminous pavement)

Bituminous concrete / Asphalt

Sedimentary (Anthropogenic)

Pumice or Tufa/Travertine (Pumice (if igneous) or Calcareous Tufa (if sedimentary)) — igneous/sedimentary

Pumice or Tufa/Travertine

Pumice (if igneous) or Calcareous Tufa (if sedimentary)

igneous/sedimentary

Fluorite and Red Jasper (Fluorite (Calcium Fluoride, CaF2) and Red Jasper (Silicon Dioxide, SiO2)) — mineral

Fluorite and Red Jasper

Fluorite (Calcium Fluoride, CaF2) and Red Jasper (Silicon Dioxide, SiO2)

Limonite (Iron Ore) (Limonite (an amorphous mixture of hydrated iron oxides, primarily FeO(OH)·nH2O)) — mineral

Limonite (Iron Ore)

Limonite (an amorphous mixture of hydrated iron oxides, primarily FeO(OH)·nH2O)

Ferruginous Quartz (Quartz (Silicon Dioxide, SiO2) with Iron Oxides) — mineral

Ferruginous Quartz

Quartz (Silicon Dioxide, SiO2) with Iron Oxides

Ruby (Corundum) (Al2O3 (Aluminium oxide with Chromium impurities)) — Mineral

Ruby (Corundum)

Al2O3 (Aluminium oxide with Chromium impurities)