White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Category
Man Made Rock Like Material
Browse man made rock like material specimens identified by the Rock Identifier community.
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Coquina or Fossiliferous Limestone
Fossiliferous Calcarenite (CaCO3)
sedimentary
Amphibolite with Hornblende
Amphibole-rich Metamorphic Rock (Ca2(Mg,Fe)5Si8O22(OH)2)
metamorphic
Chert Nodule (with Flint core)
Sedimentary Cryptocrystalline Quartz (SiO2)
sedimentary
Aventurine
Aventurine Quartz (SiO2 with inclusions)
metamorphic
Diamond
Diamond (pure Carbon, C)
mineral
Sandstone
Sandstone (lithified quartz arenite, arkose, graywacke, etc. depending on composition)
Sedimentary Rock
Granite (Weathered)
Course-grained Intrusive Igneous Rock
igneous
Chert (variations include Flint/Jasper)
Chert (SiO2)
sedimentary
Jade (Nephrite or Jadeite)
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (Na(Al,Fe3+)Si2O6)
Metamorphic Rock / Mineral
Quartz Geode (partially formed/chalcedony with iron staining)
Quartz (SiO2) with Chalcedony (cryptocrystalline quartz) and likely Iron Oxides/Hydroxides
Mineral/Sedimentary Rock Feature
Chondrite Meteorite
Ordinary Chondrite (OC)
igneous
Muscovite Mica (Golden/Yellow variety)
KAl2(AlSi3O10)(F,OH)2
mineral
Basalt
Basalt (Mafic volcanic rock)
igneous
Serpentine
Serpentine group ((Mg, Fe, Ni, Al, Zn, Mn)3(Si, Al, Fe)2O5(OH)4)
metamorphic
Serpentine (Serpentinite)
Serpentinite (complex silicate group including lizardite, chrysotile, and antigorite)
metamorphic
Sandstone
Arenite (SiO2 based)
sedimentary
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals, Mg3Si2O5(OH)4)
metamorphic
Agate (Common Chalcedony)
Silicon Dioxide (SiO2)
mineral
Olivine (Peridotite)
Olivine Group; (Mg, Fe)2SiO4
igneous
Olivine in Basalt (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4 (Mineral) / Scoriaceous Basalt (Host Rock)
igneous
Chalcedony on Matrix
Silicon Dioxide (SiO2)
mineral
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3/FeO(OH) cementing agents)
sedimentary
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Chert (with Manganese Dendrites)
Chert (Cryptocrystalline Quartz, SiO2)
sedimentary
Chert (Jasper/River Stone)
Silicon dioxide (SiO2) - Microcrystalline quartz
sedimentary
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
sedimentary
Prase Quartz on Feldspar
Quartz (Silicon Dioxide, SiO2) with Hedenbergite inclusions on Potassium Feldspar (KAlSi3O8)
mineral
Diamond
Native Carbon (C)
mineral
Basalt
Basalt
igneous
Sandstone with Concretions / Liesegang Rings
Arenite with iron oxide banding
sedimentary
Chert (Jasper/Chalcedony)
Microcrystalline Quartz (SiO2)
sedimentary
Quartz Geode
Silicon Dioxide (SiO2) within a geode
mineral
Diorite
Diorite (intermediate intrusive igneous rock)
igneous
Tree Agate
Dendritic Agate (Silicon Dioxide, SiO2)
mineral
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
mineral
Granite
Phaneritic Felsic Igneous Rock (Granite)
igneous
Arkosic Sandstone (or Conglomeritic Sandstone fragment)
Arkose (rich in feldspar)
sedimentary
Chert (Fossiliferous)
Silicon dioxide (SiO2)
sedimentary
Chert (Nodule)
Microcrystalline Quartz (SiO2)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
metamorphic