Rock Identifier

Category

Mineraloid Like Synthetic Material

Browse mineraloid like synthetic material specimens identified by the Rock Identifier community.

Learn about Mineraloid Like Synthetic Material in the encyclopedia

Yttrium Aluminum Garnet

Yttrium Aluminum Garnet

Shungite

Zincite

Opalite

Lead Feldspar

Peat

Blue Line Jasper

Lime Green Tourmaline

Lime Green Tourmaline

Argillite

Needle Tourmaline

Needle Tourmaline

Calc-Silicate Rock

Calc-Silicate Rock

Color-Change Tourmaline

Color-Change Tourmaline

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

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

Sandstone (likely Ferruginous)

Arenite with Iron Oxide cement

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Diamond (in jewelry setting) (Cubic Carbon (C)) — mineral

Diamond (in jewelry setting)

Cubic Carbon (C)

Yellow jasper or polished yellow chalcedony (Microcrystalline quartz, SiO₂, likely iron-stained jasper/chalcedony) — mineral

Yellow jasper or polished yellow chalcedony

Microcrystalline quartz, SiO₂, likely iron-stained jasper/chalcedony

Mica Schist (Metamorphic Rock (rich in Muscovite or Biotite mica)) — metamorphic

Mica Schist

Metamorphic Rock (rich in Muscovite or Biotite mica)

Chert (Jasper/Chalcedony) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper/Chalcedony)

Microcrystalline Quartz (SiO2)

Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

Petrified Wood (Silicified Wood (primarily Chalcedony/Quartz, SiO2)) — fossil

Petrified Wood

Silicified Wood (primarily Chalcedony/Quartz, SiO2)

Lepidolite on Pegmatite (Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2) in Granitic Pegmatite) — igneous

Lepidolite on Pegmatite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2) in Granitic Pegmatite

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Sandstone (Ferruginous) (Sandstone (clastic sedimentary rock, mainly SiO2 with iron oxide cement)) — sedimentary

Sandstone (Ferruginous)

Sandstone (clastic sedimentary rock, mainly SiO2 with iron oxide cement)

Quartz (White Pebble) and Sandstone (Brown/Tan Fragments) (Silicon Dioxide (SiO2) for the white pebble) — mineral and sedimentary

Quartz (White Pebble) and Sandstone (Brown/Tan Fragments)

Silicon Dioxide (SiO2) for the white pebble

mineral and sedimentary

Brown Chert or Ironstone (Cryptocrystalline Quartz (SiO2) with Iron Oxides) — sedimentary

Brown Chert or Ironstone

Cryptocrystalline Quartz (SiO2) with Iron Oxides

Sandstone (likely Arkosic or Ferruginous) (Arenite (SiO2 with iron oxides or feldspar)) — sedimentary

Sandstone (likely Arkosic or Ferruginous)

Arenite (SiO2 with iron oxides or feldspar)

Red Sandstone (Sandstone (lithic arenite or arkose with iron oxide)) — sedimentary

Red Sandstone

Sandstone (lithic arenite or arkose with iron oxide)

Concrete with Aggregate (Composite construction material; primary matrix is Calcium Silicate Hydrate (C-S-H)) — anthropogenic (human-made) sedimentary-like material

Concrete with Aggregate

Composite construction material; primary matrix is Calcium Silicate Hydrate (C-S-H)

anthropogenic (human-made) sedimentary-like material

Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Chert

Microcrystalline Quartz (SiO2)

Sandstone (with minor quartz and possible clay components) (Clastic Sedimentary Rock (SiO2 dominated)) — sedimentary

Sandstone (with minor quartz and possible clay components)

Clastic Sedimentary Rock (SiO2 dominated)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Tufa (Vesicular Limestone) (Tufa (form of Calcium Carbonate, CaCO3)) — sedimentary

Tufa (Vesicular Limestone)

Tufa (form of Calcium Carbonate, CaCO3)

Muscovite Mica (Muscovite, KAl2(AlSi3O10)(OH)2) — mineral

Muscovite Mica

Muscovite, KAl2(AlSi3O10)(OH)2

Chert (often called Flint) (Chert (Cryptocrystalline Silica, SiO2)) — sedimentary

Chert (often called Flint)

Chert (Cryptocrystalline Silica, SiO2)

Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

Amethyst quartz cluster (Quartz, SiO₂; purple coloration from iron impurities and irradiation) — mineral

Amethyst quartz cluster

Quartz, SiO₂; purple coloration from iron impurities and irradiation

Sandstone (Red Sandstone) (Arenite (primarily Quartz with Hematite cement)) — sedimentary

Sandstone (Red Sandstone)

Arenite (primarily Quartz with Hematite cement)

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

Chert (River Stone) (Silicon Dioxide (SiO2)) — sedimentary

Chert (River Stone)

Silicon Dioxide (SiO2)

Chert / Flint (Silicon Dioxide (SiO2)) — sedimentary

Chert / Flint

Silicon Dioxide (SiO2)

Chert (specifically Red Chert / Jasper) (Silicon Dioxide (SiO2)) — sedimentary

Chert (specifically Red Chert / Jasper)

Silicon Dioxide (SiO2)

Obsidian (Obsidian (Volcanic Glass)) — igneous

Obsidian

Obsidian (Volcanic Glass)

Red Sandstone (Clastic Terrigenous Sedimentary Rock (primarily SiO2 with Fe2O3 coating)) — sedimentary

Red Sandstone

Clastic Terrigenous Sedimentary Rock (primarily SiO2 with Fe2O3 coating)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Granite Cobble / Gneiss (River Rock) (Granitic Gneiss / Felsic Igneous Rock) — igneous

Granite Cobble / Gneiss (River Rock)

Granitic Gneiss / Felsic Igneous Rock

Quartzite Pebble (Quartzite (mostly SiO2)) — metamorphic

Quartzite Pebble

Quartzite (mostly SiO2)

Chert (Flint) (Chert (Silicon Dioxide, SiO2)) — sedimentary

Chert (Flint)

Chert (Silicon Dioxide, SiO2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Sandstone (Sedimentary Rock (Quartz arenite or arkose)) — sedimentary

Sandstone

Sedimentary Rock (Quartz arenite or arkose)

Sandstone (Clastic Sedimentary Rock) — sedimentary

Sandstone

Clastic Sedimentary Rock

Granite (Intrusive Felsic Igneous Rock) — igneous

Granite

Intrusive Felsic Igneous Rock