Chalk
Calcium Carbonate (CaCO3)
sedimentary
Category
Man Made Rock (Technosol)
Browse man made rock (technosol) specimens identified by the Rock Identifier community.
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Quartzite pebble
Quartzite (SiO2)
metamorphic
Chert (Chalcedony/Agate variety)
Silicon Dioxide (SiO2)
sedimentary
Sandstone
Arenite (specifically sublithic or quartz arenite)
sedimentary
Sandstone
Sedimentary Rock (Quartz Sandstone)
sedimentary
Slag (Industrial Glass/Metal)
Ferrous slag or Glassy silicate byproduct
Antropogenic rock (Man-made)
Granite
Intrusive Igneous Rock (Granitic)
igneous
Sandstone
Arenite (SiO2 composition dominant)
sedimentary
Limpets Shell / Fossil Specimen
Patellogastropoda (Class)
fossil
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Quartzite
Metamorphic Quartz Rock (SiO2)
metamorphic
Granite
Felsic intrusive igneous rock
igneous
Banded Gneiss
Gneiss (Foliated Metamorphic Rock)
metamorphic
Granite
Phaneritic Felsic Igneous Rock
igneous
Red Sandstone
Quartz Arenite (iron-stained) / SiO2
sedimentary
Asphalt Chunk (with aggregate)
Bituminous concrete / Anthropogenic conglomerate
sedimentary (anthropogenic/man-made conglomerate)
Pink Granite
Phaneritic Felsic Igneous Rock (composed of orthoclase, quartz, and plagioclase)
igneous
Asphalt aggregate (crushed stone in bitumen)
Artificial composite; predominantly crushed granite, basalt, limestone, and/or recycled aggregate bound by bitumen
sedimentary
Granite
Granite (Felsic Plutonic Rock)
igneous
Sandstone
Arenite (SiO2 primarily)
sedimentary
Natural Pearl
Calcium carbonate (primarily Aragonite and Conchiolin), CaCO3
mineral
Sandstone (Pebble)
Sandstone (SiO2 with matrix/cement)
sedimentary
Mica Schist
Mica Schist (principally Biotite/Muscovite, Quartz, and Feldspar)
metamorphic
Chert Nodule
Microcrystalline Quartz (SiO2)
sedimentary
Porphyry
Porphyritic Igneous Rock
igneous
Chert (and Agate/Chalcedony)
Microcrystalline Quartz (SiO2)
sedimentary
Granite
Granite (Plutonic Igneous Rock)
igneous
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Diabase (Dolerite)
Diabase
igneous
Granite
Granite (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)
igneous
Aura Quartz (Anomalously Coated Quartz)
Silicon Dioxide (SiO2) treated with vaporized metals
mineral
Quartzite
Metamorphic quartz rock (SiO2)
metamorphic
Quartzite
Metamorphic Quartz Rock (SiO2)
metamorphic
Basalt
Basalt
igneous
Chalcedony (Agate/Chert variety)
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone
Sedimentary Rock (Quartz Sandstone)
sedimentary
Basalt
Basalt
igneous
Chert (Flint / Jasper)
Silicon Dioxide (SiO2)
sedimentary
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Chalk
Carbonate rock (mainly CaCO3)
sedimentary