Rock Identifier

Category

Mineraloid (Human Made Geological Specimen)

Browse mineraloid (human made geological specimen) specimens identified by the Rock Identifier community.

Banded Igneous Dike Rock (Intrusive igneous rock with felsic/mafic banding) — igneous

Banded Igneous Dike Rock

Intrusive igneous rock with felsic/mafic banding

Quartzite Pebble with Pyrite Coating (SiO2 (Quartz) with FeS2 (Pyrite) inclusions or surface coating) — metamorphic

Quartzite Pebble with Pyrite Coating

SiO2 (Quartz) with FeS2 (Pyrite) inclusions or surface coating

Quartz (or Chalcedony) Specimen (Silicon Dioxide (SiO2)) — mineral

Quartz (or Chalcedony) Specimen

Silicon Dioxide (SiO2)

Glendonite (Calcite Pseudomorph after Ikaite) (Calcite (CaCO3) pseudomorph after Ikaite (CaCO3·6H2O)) — mineral

Glendonite (Calcite Pseudomorph after Ikaite)

Calcite (CaCO3) pseudomorph after Ikaite (CaCO3·6H2O)

Porphyritic Basalt (Porphyritic Basalt with Olivine phenocrysts) — igneous

Porphyritic Basalt

Porphyritic Basalt with Olivine phenocrysts

Basalt with Quartz Vein (Mafic volcanic rock with hydrothermal SiO2 filling) — igneous

Basalt with Quartz Vein

Mafic volcanic rock with hydrothermal SiO2 filling

Glacial Granite with Epidote (Granite featuring Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))) — igneous

Glacial Granite with Epidote

Granite featuring Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))

Obsidian (Volcanic Glass (SiO2)) — igneous

Obsidian

Volcanic Glass (SiO2)

Amber (Baltic) (Succinith (Fossilized Tree Resin)) — mineraloid

Amber (Baltic)

Succinith (Fossilized Tree Resin)

Amber (Succinates (Fossilized Tree Resin)) — mineraloid

Amber

Succinates (Fossilized Tree Resin)

Amber (Succiniferous fossil resin (C10H16O)) — mineraloid

Amber

Succiniferous fossil resin (C10H16O)

Amber (Succinates) — mineraloid

Amber

Succinates

Amber (Succinite (specifically for Baltic amber); chemical formula approximately C10H16O) — Mineraloid

Amber

Succinite (specifically for Baltic amber); chemical formula approximately C10H16O

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Flint / Chert with Fossils (Cryptocrystalline quartz (SiO2) with embedded fossil impressions) — sedimentary

Flint / Chert with Fossils

Cryptocrystalline quartz (SiO2) with embedded fossil impressions

Chert (Jasper variety) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Halite (Sodium Chloride (NaCl)) — Mineral

Halite

Sodium Chloride (NaCl)

Amber (Succinite (C10H16O)) — mineraloid

Amber

Succinite (C10H16O)

Amber (Succinate (Succinite for Baltic varieties)) — mineraloid

Amber

Succinate (Succinite for Baltic varieties)

Libyan Desert Glass (Natural Silica Glass (SiO2 with minor iron and titanium)) — mineraloid

Libyan Desert Glass

Natural Silica Glass (SiO2 with minor iron and titanium)

Amber (Succinicum (Organic Gemstone - Resinite)) — mineraloid

Amber

Succinicum (Organic Gemstone - Resinite)

Amber (Succinite (with approximate formula C10H16O)) — mineraloid

Amber

Succinite (with approximate formula C10H16O)

Amber (Succinate (Organic Fossilized Resin)) — mineraloid

Amber

Succinate (Organic Fossilized Resin)

Gold Sheen Obsidian (Volcanic Glass (SiO2 + impurities)) — igneous

Gold Sheen Obsidian

Volcanic Glass (SiO2 + impurities)

Red Jasper (Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2 + Fe2O3)) — mineral

Red Jasper

Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2 + Fe2O3)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Chert (Jasper-like Silicate) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper-like Silicate)

Silicon Dioxide (SiO2)

Green Sea Glass (Amorphous Silica (man-made glass), SiO2 + additive metal oxides) — mineraloid / anthropogenic (man-made origin)

Green Sea Glass

Amorphous Silica (man-made glass), SiO2 + additive metal oxides

mineraloid / anthropogenic (man-made origin)

Precious Opal (Hydrated Silica (SiO2·nH2O)) — mineraloid

Precious Opal

Hydrated Silica (SiO2·nH2O)

Green Opal (Hydrated Silica (SiO2·nH2O)) — mineraloid

Green Opal

Hydrated Silica (SiO2·nH2O)

Pink Opal (Hydrated Amorphous Silica (SiO2·nH2O)) — mineraloid

Pink Opal

Hydrated Amorphous Silica (SiO2·nH2O)

Chert (Jasper variety) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Quartzite Pebble (Metamorphic Quartzite (predominantly SiO2)) — metamorphic

Quartzite Pebble

Metamorphic Quartzite (predominantly SiO2)

Quartz (Chert / Agate / Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Quartz (Chert / Agate / Chalcedony)

Silicon Dioxide (SiO2)

Coquina (Biogenic Limestone (mostly Calcium Carbonate, CaCO3)) — sedimentary

Coquina

Biogenic Limestone (mostly Calcium Carbonate, CaCO3)

Granite Pebble with Quartz/Feldspar Vein (Intrusive Felsic Igneous Rock (Granite)) — igneous

Granite Pebble with Quartz/Feldspar Vein

Intrusive Felsic Igneous Rock (Granite)

Amber (Fossilized Tree Resin (Succinite)) — mineraloid

Amber

Fossilized Tree Resin (Succinite)

Coquina (Bioclastic Limestone) — sedimentary

Coquina

Bioclastic Limestone

Amber (Succinite (specifically for Baltic Amber), Formula: C10H16O) — Mineraloid

Amber

Succinite (specifically for Baltic Amber), Formula: C10H16O

Tektite (Tektite (high-silica natural glass)) — Mineraloid

Tektite

Tektite (high-silica natural glass)

Chert (Arrowhead Fragment) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Arrowhead Fragment)

Silicon Dioxide (SiO2)

Quartz (Chert/Quartzite) (Silicon Dioxide (SiO2)) — mineral

Quartz (Chert/Quartzite)

Silicon Dioxide (SiO2)