Conglomerate
Clastic Conglomerate (Lithic-rich)
sedimentary
Category
Antropogenic (Man Made Material)
Browse antropogenic (man made material) specimens identified by the Rock Identifier community.
Sandstone (Quartzose Sandstone)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Diorite
Diorite (intermediate intrusive igneous rock)
igneous
Diorite (Salt and Pepper Rock)
Diorite
igneous
Red Sandstone
Arenite (primarily Quartz with Hematite cement)
sedimentary
Sandstone (Glacial Cobble)
Arenite / Sedimentary Rock (primarily SiO2)
sedimentary
Granite
Phaneritic intrusive igneous rock (consisting mainly of Quartz, Alkali Feldspar, and Plagioclase)
igneous
Quartz / Quartzite
Quartz (Silicon Dioxide, SiO2)
metamorphic
Sandstone (Pebble)
Arenite (primarily SiO2)
sedimentary
Sandstone (Quartz-rich Pebble)
Arenite (primarily SiO2)
sedimentary
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
sedimentary
Obsidian
Obsidian (Volcanic Glass), primarily SiO2 (Silicon Dioxide)
igneous
Sandstone (Weathered Pebble)
Arenite (primarily SiO2)
sedimentary
Quartzite Pebble
Quartzite (primarily SiO2)
metamorphic
Pyrite
Iron Sulfide (FeS2)
mineral
Indigo Gabbro
Gabbro (Mafic Intrusive Rock)
igneous
Chert (specifically Gray/Tan Chert Node)
Microcrystalline Quartz (SiO2)
sedimentary
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Siltstone/Sandstone (possibly Wonderstone or Picture Sandstone)
Clastic Sedimentary Rock (primarily SiO2 with Iron Oxide inclusions)
Sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Granite
Phaneritic Igneous Rock (composed primarily of Quartz SiO2, Alkali Feldspar (K,Na)AlSi3O8, and Plagioclase Feldspar)
igneous
Sandstone
Arenite (primarily SiO2 - Silicon Dioxide)
sedimentary
Basalt
Extrusive mafic igneous rock
igneous
Pyrite
Iron Sulfide (FeS2)
mineral
Quartz (specifically Milky or Clear Chunk)
Silicon Dioxide (SiO2)
mineral
Chert (specifically River Stone / Jasper variety)
Microcrystalline Quartz (SiO2)
sedimentary
Quartzite
Quartzite (primarily SiO2)
metamorphic
Green Fluorite
Fluorite (Calcium Fluoride - CaF2)
mineral
Mica Schist
Schist (Muscovite/Biotite Schist)
metamorphic
Sandstone (Ferruginous)
Arenite with Iron Oxide cement (SiO2 + Fe2O3)
sedimentary
Quartzite
Quartzite (SiO2)
metamorphic
Diorite (Salt and Pepper Rock)
Phaneritic plutonic igneous rock (sodium-rich plagioclase feldspar and hornblende)
igneous
Brecciated Jasper
Silicon Dioxide (SiO2) with varying mineral inclusions (Iron Oxide, Hematite, Clay)
sedimentary (clastic/chemical)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Fossilized Wood (with Coal and Limonite)
Petrified Wood (Silicified or Carbonized Flora)
sedimentary
Petrified Wood
Silicified Wood (primarily SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Petrified Wood (Agatized/Silicified Wood)
Silicified Wood / Chalcedony (SiO2)
sedimentary
Jasper
Jasper (Silica-rich microcrystalline Quartz, SiO2 with Fe2O3 impurities)
sedimentary
Blue Goldstone
Aventurine Glass (SiO2 with Co and metallic inclusions)
mineral (synthetic glass)
Chert (specifically Yellow or River Chert)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary