Rock Identifier

Category

Man Made Object (Simulant)

Browse man made object (simulant) specimens identified by the Rock Identifier community.

Banded Iron Formation (BIF) / Tiger Iron variety (Banded Iron Formation (composed primarily of Magnetite Fe3O4, Hematite Fe2O3, and Chert/Quartz SiO2)) — sedimentary

Banded Iron Formation (BIF) / Tiger Iron variety

Banded Iron Formation (composed primarily of Magnetite Fe3O4, Hematite Fe2O3, and Chert/Quartz SiO2)

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

Amethyst (Geode)

Silicon Dioxide (SiO2) with iron impurities

Amethyst (Silicon Dioxide (SiO2) with iron impurities) — Mineral

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Citrine Quartz (Silicon Dioxide (SiO2) with iron impurities) — mineral

Citrine Quartz

Silicon Dioxide (SiO2) with iron impurities

Clear Quartz (Silicon dioxide (SiO2)) — mineral

Clear Quartz

Silicon dioxide (SiO2)

Chert (specifically Red Chert or Jasper) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Red Chert or Jasper)

Microcrystalline Quartz (SiO2)

Gneiss (Gneiss (High-grade metamorphic rock)) — metamorphic

Gneiss

Gneiss (High-grade metamorphic rock)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Granitic Pegmatite (Coarse-grained Igneous Rock (Granitic composition: KAlSi3O8, SiO2)) — igneous

Granitic Pegmatite

Coarse-grained Igneous Rock (Granitic composition: KAlSi3O8, SiO2)

Chert (Jasper/Flint variety) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper/Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Sandstone (with Iron Staining) (Arenite (composed primarily of SiO2 with Fe2O3 staining)) — sedimentary

Sandstone (with Iron Staining)

Arenite (composed primarily of SiO2 with Fe2O3 staining)

Basalt River Pebble (Basalt (Aphanitic Mafic Igneous Rock)) — igneous

Basalt River Pebble

Basalt (Aphanitic Mafic Igneous Rock)

Red Sandstone (Arenite (Ferruginous Sandstone)) — sedimentary

Red Sandstone

Arenite (Ferruginous Sandstone)

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

Quartzite (River Cobble)

Metamorphosed Quartz Sandstone (SiO2)

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

Quartz (White or Milky Quartz Pebble)

Quartz (Silicon Dioxide, SiO2)

Pink Feldspar (Orthoclase) (Orthoclase Feldspar (KAlSi3O8)) — mineral

Pink Feldspar (Orthoclase)

Orthoclase Feldspar (KAlSi3O8)

Pink Orthoclase Feldspar with Dendrites (Orthoclase (KAlSi3O8) with Manganese Oxide dendrites) — mineral

Pink Orthoclase Feldspar with Dendrites

Orthoclase (KAlSi3O8) with Manganese Oxide dendrites

Scoria (Vesicular Basaltic Glass (comprised primarily of volcanic glass/silica with plagioclase, pyroxene, and olivine crystals)) — igneous

Scoria

Vesicular Basaltic Glass (comprised primarily of volcanic glass/silica with plagioclase, pyroxene, and olivine crystals)

Red Jasper (Banded Jasper) (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Red Jasper (Banded Jasper)

Jasper (Silicon Dioxide, SiO2)

Scoria (Basaltic Lava Rock) (Vesicular Basalt) — igneous

Scoria (Basaltic Lava Rock)

Vesicular Basalt

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Chert (Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline Quartz (SiO2)

Chert (Jasper variation) (Silicon dioxide (SiO2)) — sedimentary

Chert (Jasper variation)

Silicon dioxide (SiO2)

Fossiliferous Limestone (Biogenic Limestone (Calcium Carbonate, CaCO3)) — sedimentary

Fossiliferous Limestone

Biogenic Limestone (Calcium Carbonate, CaCO3)

Ocean Jasper (Orbicular Jasper (Silicon Dioxide, SiO2)) — mineral

Ocean Jasper

Orbicular Jasper (Silicon Dioxide, SiO2)

Quartz (Crystal Point/Fragment) (Silicon Dioxide (SiO2)) — mineral

Quartz (Crystal Point/Fragment)

Silicon Dioxide (SiO2)

Rough Quartz (likely Milky or Smoky Quartz) (Silicon Dioxide (SiO2)) — mineral

Rough Quartz (likely Milky or Smoky Quartz)

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Slate (Slate (Regional metamorphic rock composed primarily of quartz, illite, and chlorite)) — metamorphic

Slate

Slate (Regional metamorphic rock composed primarily of quartz, illite, and chlorite)

Jasper (Iron-rich) (Silicon Dioxide (SiO2) with Hematite (Fe2O3) impurities) — sedimentary

Jasper (Iron-rich)

Silicon Dioxide (SiO2) with Hematite (Fe2O3) impurities

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky 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]

Limestone (Sedimentary Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Sedimentary Calcium Carbonate (CaCO3)

Basalt (Mafic Igneous Rock) — igneous

Basalt

Mafic Igneous Rock

Basalt (Mafic volcanic rock (primarily plagioclase feldspar and pyroxene)) — Igneous

Basalt

Mafic volcanic rock (primarily plagioclase feldspar and pyroxene)

Chert (Nodular Chert) (Microcrystalline Silica (SiO2)) — sedimentary

Chert (Nodular Chert)

Microcrystalline Silica (SiO2)

Basalt River Stone (Basalt) — igneous

Basalt River Stone

Basalt

Granite (specifically Rapakivi Granite) (Phaneritic Felsic Igneous Rock (Granite)) — igneous

Granite (specifically Rapakivi Granite)

Phaneritic Felsic Igneous Rock (Granite)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)