Sandstone
Arenite
sedimentary
Category
Not A Natural Rock (Man Made Composite)
Browse not a natural rock (man made composite) specimens identified by the Rock Identifier community.
Learn about Not A Natural Rock (Man Made Composite) in the encyclopedia
View all →
Sandstone (Ferruginous)
Arenite (composed primarily of SiO2 with Fe2O3 cement)
sedimentary
Sandstone (Ferruginous)
Arenite (primarily SiO2 with iron oxide cement)
sedimentary
Red Sandstone
Arenite (predominantly Quartz with Hematite cementation)
sedimentary
River Pebble / Chert Pebble
Microcrystalline Quartz (SiO2)
sedimentary
Ferruginous Sandstone (with possible Epidote/Chlorite coloring)
Sandstone (SiO2 dominated with Fe2O3 staining)
sedimentary
Quartz-veined Diabase or Basalt Pebble
Diabase or Basalt with Hydrothermal Quartz Veins (SiO2)
igneous
Sandstone (likely Quartzose)
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite
sedimentary
Titanium Coated Aura Quartz (Apple Aura Quartz)
Silicon Dioxide (SiO2) with Metallic Vapor Deposition Coating
Mineral (Man-modified)
Quartz (Milky Quartz / Clear Quartz)
Silicon Dioxide (SiO2)
mineral
Shale (Ferruginous)
Laminated Mudrock (Siliciclastic Sedimentary Rock)
sedimentary
Quartz-rich granite or granitic pebble
Granite; primarily quartz (SiO₂), potassium feldspar, plagioclase, and minor mica/iron oxides
igneous
Rounded granite cobble
Granite; chiefly quartz, feldspar, and mica/amphibole
igneous
Smoky Quartz
Smoky Quartz (SiO2: Silicon Dioxide)
mineral
Sandstone Pebble
Arenite (Sandstone)
sedimentary
Sandstone
Arenite (major component SiO2)
sedimentary
Tumbled Gabbro
Gabbro (Mafic intrusive igneous rock)
igneous
Pink Granite
Phaneritic Felsic Intrusive Igneous Rock
igneous
Sandstone (likely Arkosic or Lithic Sandstone)
Clastic Sedimentary Rock (SiO2 with assorted minerals)
sedimentary
Blue Topaz
Aluminum Silicate Fluoride Hydroxide - Al2SiO4(F,OH)2
gemstone
River Rock (Basalt or Sandstone)
Clastic Sedimentary Rock or Extrusive Mafic Igneous Rock
igneous or sedimentary
Sandstone (Quartzose Sandstone)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Blue Quartz (Aventurine)
Silicon Dioxide (SiO2) with fibrous inclusions (commonly Dumortierite)
mineral
Travertine / Tufa
Calcium Carbonate (CaCO3)
sedimentary
Sandstone Pebble
Sandstone (Silicon dioxide-rich clastic sedimentary rock)
sedimentary
Granite Gravel (Pebble)
Intrusive Felsic Igneous Rock
igneous
Granite
Intrusive igneous felsic rock
igneous
Granite
Phaneritic Plutonic Felsic Rock
igneous
Granite
Phaneritic Felsic Igneous Rock
igneous
Granite
Phaneritic plutonic rock (Felsic)
igneous
Bauxite (Pisolitic Bauxite)
Bauxite (mixture of Hydrous Aluminum Oxides)
sedimentary
Sandstone (Ferruginous)
Arenite with Iron Oxide cement
sedimentary
Sandstone (Quartzose)
Arenite (composed mainly of SiO2)
sedimentary
Dyed Dalmatian Stone
Aplite (Alkali-feldspar granite) with Arfvedsonite
igneous
Diorite
Diorite (Intermediate intrusive igneous rock)
igneous
Gravel (Crushed Stone Aggregates)
Mixed Siliciclastic / Carbonate Aggregate
sedimentary
Quartz Druzy
Crystalline Silicon Dioxide (SiO2)
mineral
Yellow Quartz or Citrine Geode/Cluster
Silicon Dioxide (SiO2)
mineral
Quartz Geode with Calcite/Siderite
Crystalline Silicon Dioxide (SiO2) with Carbonate inclusions
mineral
Travertine
Calcium Carbonate (CaCO3)
sedimentary