Mineraloid Like Synthetic Material

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

Sandstone with Ironstone Concretion

Arenite with Hematite/Goethite nodules (Fe2O3 / FeO(OH))

sedimentary

Limestone

Calcium Carbonate (CaCO3)

sedimentary

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

metamorphic

Granite

Phaneritic Plutonic Igneous Rock

igneous

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

mineral

Copper-bearing Quartz (with Malachite and Iron Oxides)

Quartz (SiO2) with Malachite (Cu2CO3(OH)2) and Hematite/Limonite (Fe2O3)

Mineral Specimen

Quartzite Pebbler

Quartzite (SiO2)

metamorphic

Quartzite Pebble

Quartzite (SiO2)

metamorphic

Asphalt (Bituminous Concrete)

Bituminous mix containing aggregates and petroleum-based binder (CnH2n+2)

not a rock (anthropogenic material/technofossil)

Decomposed Granite

Grano-diorite/Granite-residuum (SiO2 primary)

igneous

Chert (Commonly known as Flint or River Pebble)

Microcrystalline Quartz (SiO2)

sedimentary

Banded Chert (River Stone)

Silicon Dioxide (SiO2)

sedimentary

Chert (Jasper)

Silicon dioxide (SiO2)

sedimentary

Slate

Slate (foliated metamorphic rock)

metamorphic

Slate

metamorphic

Greisen (Quartz-Muscovite-Turretine Rock)

Greisen

Metamorphic Rock

Chrysocolla (with Quartz and Azurite)

Hydrated copper phyllosilicate mineral [Cu2-xAlx(H2-xSi2O5)(OH)4·n(H2O)]

mineral

Limestone

Calcium carbonate (CaCO3)

sedimentary

Soapstone (Steatite)

Steatite (primarily Talc: Mg3Si4O10(OH)2)

metamorphic

Banded Calcite (Cave Onyx)

Calcium Carbonate (CaCO3)

sedimentary

Green Jasper

Jasper (Silicates, SiO2)

sedimentary

Tiger's Eye

SiO2 (Silicon Dioxide with Iron Oxide inclusions)

Mineral (Metamorphic pseudomorph)

Quartz (likely a macrocrystalline variety like milky quartz or smoky quartz, given the appearance in the image)

Quartz (SiO₂ - Silicon Dioxide)

Mineral

Agatized Fossil or Chalcedony Nodule

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

sedimentary

Basalt (Crushed Stone Aggregate)

Mafic Volcanic Basalt (Major Minerals: Plagioclase Feldspar, Pyroxene, Olivine)

igneous

Diamond

Diamond (pure Carbon, C)

mineral

Crushed Limestone (Gravel)

Calcium Carbonate (CaCO3)

sedimentary

Diamond (in jewelry setting)

Adamantine Carbon (C)

mineral

Sandstone

Sandstone (various mineral compositions)

Sedimentary

Quartz (Milky/Yellowish variety)

Silicon Dioxide (SiO2)

mineral

Jasper

Silicon dioxide (SiO2)

sedimentary

Terrazzo (with Marble and Granite fragments)

Cementitious or resinous composite containing Calcium Carbonate (CaCO3) and Silicates

sedimentary (man-made composite)

Painted Pet Rock (Quartzite/Sandstone base)

Silicon Dioxide (SiO2) with anthropomorphic acrylic embellishments

sedimentary

Magnetite

Magnetite (Fe3O4)

Mineral

Conglomerate

Sedimentary

Chert / Flint

Microcrystalline or cryptocrystalline quartz (SiO2)

sedimentary

Granite

Granite (a common rock type, not a single mineral with a formula. Composed primarily of quartz, feldspar, and mica/amphibole).

igneous

Pink Jade (Dyed Quartzite)

Silicon Dioxide (SiO2) - primarily Quartzite or Quartz

metamorphic

Granite

Granite (a broadly defined plutonic igneous rock, often more specifically classified as quartz monzonite or granodiorite based on precise mineral percentages)

igneous

Beaded Jewelry (Assorted Gemstones)

Various minerals, including but not limited to Quartz (SiO2), Garnet (X3Y2(SiO4)3), Jade (Na(Al,Fe)Si2O6), Amethyst (SiO2),等の多様な組み合わせ

Mineral, Jewelry

Green Calcite

Calcium Carbonate (CaCO3)

mineral

Himalayan Salt

Halite (mineral name), chemical formula NaCl (sodium chloride). Generally, 'Himalayan Salt' is a trade name for evaporite minerals from specific regions.

Mineral