Diorite
Diorite (Intermediate intrusive igneous rock)
igneous
Category
Man Made Material (Simulated Mineral)
Browse man made material (simulated mineral) specimens identified by the Rock Identifier community.
Chert (Nodular Chert)
Microcrystalline or Cryptocrystalline Silicon Dioxide (SiO2)
sedimentary
Travertine
Calcareous Tufa / Travertine (CaCO3)
sedimentary
Ferro-Manganese Slag
Vitreous Silicate Slag
Anthropogenic (Industrial byproduct)
Crushed Limestone
Calcite-rich Sedimentary Rock (CaCO3)
sedimentary
Chert (Nodular)
Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (often called Flint when dark or worked)
Cryptocrystalline silica (SiO2)
sedimentary
Chert (containing Quartz)
Microcrystalline Silica (SiO2)
sedimentary
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
sedimentary
Quartzite
Meta-quartzite (SiO2)
metamorphic
Quartzite Pebble
Quartzite (primarily SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Red Jasper (River Siltstone)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Jade
Jadeite or Nephrite (both are commonly referred to as 'jade'). Jadeite: NaAlSi2O6; Nephrite: Ca2(Mg,Fe)5Si8O22(OH)2.
Mineral
Chert (Pink Jasper/Agate variety)
Microcrystalline Quartz (SiO2)
sedimentary
Zebra Jasper (Zebra Stone)
Tumbled Silicon Dioxide (SiO2) with impurities
sedimentary
Chert (Nodule)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Serpentine
Antigorite / Lizardite / Chrysotile mix; (Mg, Fe)3Si2O5(OH)4
metamorphic
Pink Granite
Phaneritic Felsic Igneous Rock (Granite, rich in Potassium Feldspar)
igneous
Red Quartzite River Pebble
Quartzite (SiO2 with iron oxide inclusions)
metamorphic
River Stone / Siltstone
Siltstone (composed of lithified silt)
sedimentary
Banded Chert (Agate-like Flint)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Quartzite (River Pebble)
Metamorphic Quartz (SiO2)
metamorphic
Sandstone
Arenite (primarily Quartz SiO2)
sedimentary
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite with Sandstone/Iron staining
Metamorphic Quartzite (SiO2)
metamorphic
Fossiliferous Limestone
Biogenic Calcium Carbonate (CaCO3)
sedimentary
Sandstone (Ferruginous)
Arenite with Iron-Oxide Cement
sedimentary
Quartzite Cobble
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite River Rock
Quartzite (primarily SiO2)
metamorphic
Fossil Coral
Scleractinia (Anthos), primarily Calcium Carbonate (CaCO3)
sedimentary
Chert
Chert (Microcrystalline Silica, SiO2)
sedimentary
River Quartzite Spheroid
Recrystallized Orthoquartzite (SiO2)
metamorphic
Serpentine
Serpentine group ((Mg, Fe, Ni, Al, Zn, Mn)3(Si, Al, Fe)2O5(OH)4)
metamorphic
Iron Meteorite
Iron-nickel alloy (e.g., Kamacite, Taenite)
Meteorite (extraterrestrial material)
Basalt
Basalt (Aphanitic Mafic Igneous Rock)
igneous
Basalt
Basalt (Aphanitic Mafic Igneous Rock)
igneous
Peridotite (Pyroxenite/Serpentinized Dunite)
Ultramafic Rock (consisting primarily of Olivine and Pyroxene)
igneous
Chert (often called Flint when dark)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Quartz with Mica inclusion
Silicon Dioxide (SiO2) with Muscovite/Biotite inclusions
igneous
Stichtite in Serpentine (Atlantisite)
Mg6Cr2CO3(OH)16·4H2O (Stichtite) within Mg3Si2O5(OH)4 (Serpentine)
metamorphic