Rock Identifier

Category

Synthetic Polymer (Synthetic Material)

Browse synthetic polymer (synthetic material) specimens identified by the Rock Identifier community.

Learn about Synthetic Polymer (Synthetic Material) in the encyclopedia

Yttrium Aluminum Garnet

Yttrium Aluminum Garnet

Zincite

Opalite

Lead Feldspar

Peat

Zircon

Dunite

Limonite

Shell Opal

Madagascar Opal

Lavender Obsidian

Electric Blue Obsidian

Yellow jasper (likely ocean jasper or brecciated jasper) (Jasper, microcrystalline quartz (SiO₂) with iron-oxide staining and dark mineral veins) — mineral

Yellow jasper (likely ocean jasper or brecciated jasper)

Jasper, microcrystalline quartz (SiO₂) with iron-oxide staining and dark mineral veins

Polished yellow jasper or opaque chalcedony bead (Microcrystalline quartz (SiO₂), likely iron-oxide-stained jasper) — mineral

Polished yellow jasper or opaque chalcedony bead

Microcrystalline quartz (SiO₂), likely iron-oxide-stained jasper

Sandstone (Sedimentary Rock (Quartz Sandstone)) — sedimentary

Sandstone

Sedimentary Rock (Quartz Sandstone)

Sandstone (Sedimentary Rock (Quartz Arenite)) — sedimentary

Sandstone

Sedimentary Rock (Quartz Arenite)

Limestone with Iron Oxide Staining (Sedimentary Rock (Calcite, CaCO3)) — sedimentary

Limestone with Iron Oxide Staining

Sedimentary Rock (Calcite, CaCO3)

Sandstone (Sedimentary Rock (Quartz arenite / Lithic sandstone)) — sedimentary

Sandstone

Sedimentary Rock (Quartz arenite / Lithic sandstone)

Banded Siltstone (Banded Siltstone / Laminated Siltstone) — sedimentary

Banded Siltstone

Banded Siltstone / Laminated Siltstone

Lazulite Quartzite (Quartzite with Lazulite (SiO2 with (Mg,Fe)Al2(PO4)2(OH)2)) — metamorphic

Lazulite Quartzite

Quartzite with Lazulite (SiO2 with (Mg,Fe)Al2(PO4)2(OH)2)

Sandstone (Sedimentary Clastic Rock (Quartz Arenite)) — sedimentary

Sandstone

Sedimentary Clastic Rock (Quartz Arenite)

Sandstone (Quartzose Sandstone (Sedimentary Rock)) — sedimentary

Sandstone

Quartzose Sandstone (Sedimentary Rock)

Serpentine (Serpentine Group (Mg3Si2O5(OH)4)) — metamorphic

Serpentine

Serpentine Group (Mg3Si2O5(OH)4)

Banded Sandstone / Quartzite with Mineral Veins (Sedimentary rock (Quartz arenite with iron oxide/silica banding)) — sedimentary

Banded Sandstone / Quartzite with Mineral Veins

Sedimentary rock (Quartz arenite with iron oxide/silica banding)

Fossiliferous Chert (Brachiopod/Bryozoan Fossil) (Microcrystalline quartz (SiO2) with fossil inclusions) — sedimentary

Fossiliferous Chert (Brachiopod/Bryozoan Fossil)

Microcrystalline quartz (SiO2) with fossil inclusions

Sandstone (Sedimentary Rock (Quartzose Sandstone)) — sedimentary

Sandstone

Sedimentary Rock (Quartzose Sandstone)

Sandstone (Sedimentary Clastic Rock (Quartz Arenite)) — sedimentary

Sandstone

Sedimentary Clastic Rock (Quartz Arenite)

Sandstone (Clastic sedimentary rock (Quartz arenite / Arkose)) — sedimentary

Sandstone

Clastic sedimentary rock (Quartz arenite / Arkose)

Porphyritic Basalt or Porphyritic Andesite (Porphyritic volcanic rock) — igneous

Porphyritic Basalt or Porphyritic Andesite

Porphyritic volcanic rock

Jasper and Epidote in Quartzite (Metamorphic rock containing microcrystalline quartz, epidote, and jasper) — metamorphic

Jasper and Epidote in Quartzite

Metamorphic rock containing microcrystalline quartz, epidote, and jasper

Quartz Geode / Druzy Quartz Node (Silicon Dioxide (SiO2)) — sedimentary

Quartz Geode / Druzy Quartz Node

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Beach Pebble (Chalcedony / Chert) (Silicon Dioxide (SiO2)) — mineral

Beach Pebble (Chalcedony / Chert)

Silicon Dioxide (SiO2)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Sandstone (Arenite (predominantly SiO2)) — sedimentary

Sandstone

Arenite (predominantly SiO2)

Granite (Phaneritic Felsic Igneous Rock) — igneous

Granite

Phaneritic Felsic Igneous Rock

Chalk (Calcite (CaCO3)) — sedimentary

Chalk

Calcite (CaCO3)

Sandstone (Arenite (predominantly SiO2)) — sedimentary

Sandstone

Arenite (predominantly SiO2)

Banded Gneiss (Gneiss (Metamorphic high-grade rock)) — metamorphic

Banded Gneiss

Gneiss (Metamorphic high-grade rock)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Sodalite (Na8(Al6Si6O24)Cl2) — mineral

Sodalite

Na8(Al6Si6O24)Cl2

Quartzite Pebble (Quartzite (composed primarily of SiO2)) — metamorphic

Quartzite Pebble

Quartzite (composed primarily of SiO2)

Green Chert (Jasper) (Microcrystalline Quartz (SiO2) with chlorite/epidote inclusions) — sedimentary

Green Chert (Jasper)

Microcrystalline Quartz (SiO2) with chlorite/epidote inclusions

Yellow Quartzite (River Pebble) (Metamorphic Quartzite (primarily SiO2)) — metamorphic

Yellow Quartzite (River Pebble)

Metamorphic Quartzite (primarily SiO2)

Sandstone (Ferruginous) (Arenite (with Iron Oxide cement)) — sedimentary

Sandstone (Ferruginous)

Arenite (with Iron Oxide cement)

Sandstone (Quartzose) (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone (Quartzose)

Arenite (composed primarily of SiO2)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Chert with Fossil Brachiopod (Microcrystalline Quartz (SiO2) with Calcitic Brachiopod inclusion) — sedimentary

Chert with Fossil Brachiopod

Microcrystalline Quartz (SiO2) with Calcitic Brachiopod inclusion

Red Aventurine / Orange Quartzite (Silicon Dioxide (SiO2) with hematite/goethite inclusions) — metamorphic

Red Aventurine / Orange Quartzite

Silicon Dioxide (SiO2) with hematite/goethite inclusions

Red Sandstone (Arenite (with Iron Oxide)) — sedimentary

Red Sandstone

Arenite (with Iron Oxide)

Sandstone (Arenite (Silicon Dioxide with various mineral cements)) — sedimentary

Sandstone

Arenite (Silicon Dioxide with various mineral cements)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Sandstone (likely Graywacke or Arkose) (Arenite) — sedimentary

Sandstone (likely Graywacke or Arkose)

Arenite

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)