Goldstone (Red)
Aventurine Glass (SiO2 + Cu)
Synthetic Glass (Often categorized as a simulated mineral)
Category
Industrial Byproduct (Often Confused With Igneous Rocks Or Meteorites)
Browse industrial byproduct (often confused with igneous rocks or meteorites) specimens identified by the Rock Identifier community.
Iron Meteorite
Iron-Nickel Meteorite (primarily composed of kamacite and taenite alloys)
Mineral
Kimberlite with Diamond
Kimberlite (Diamond formula: C)
igneous
Ruby in Fuchsite (often confused with Ruby in Zoisite)
Corundum (Al2O3) in Chromium-rich Muscovite (KAl2(AlSi3O10)(OH)2)
metamorphic
Pegmatite (Granitic) with Tourmaline
Granitic Pegmatite (containing Schorl and Quartz)
igneous
Vesicular Basalt
Aphanitic Mafic Igneous Rock (with Vesicular Texture)
igneous
Iron Meteorite
Iron-nickel alloy (primarily kamacite and taenite)
Mineral/Rock (Extraterrestrial Origin)
Basalt
Basalt (containing Pyroxene, Plagioclase feldspar, and Olivine)
igneous
Kimberlite
Kimberlite
igneous
Basalt
Basalt (Volcanic Mafic Rock)
igneous
Coal
Bituminous or Anthracite coal (carbon-rich sedimentary rock)
sedimentary
Basalt with Porphyritic Texture
Porphyritic Basalt
igneous
Basalt with Magnetite inclusions
Basalt (Mafic silicate rock) potentially containing Magnetite (Fe3O4)
igneous
Quartz (Engineered Stone Countertop)
Silicon Dioxide (SiO2) within a resin matrix
igneous
Pumice
Vesicular volcanic glass (primarily SiO2)
igneous
Sandstone (Ferruginous)
Arenite with Iron Oxides
sedimentary
Granite (Pegmatitic)
Phaneritic Felsic Igneous Rock
igneous
Pegmatite
Granitic Pegmatite
igneous
Granitic Pegmatite
Coarse-grained Igneous Rock (Granitic composition: KAlSi3O8, SiO2)
igneous
Vesicular Basalt
Basalt (with vesicular texture)
igneous
Basalt
Extrusive mafic igneous rock
igneous
Quartz with Iron Oxide Inclusions
SiO2 with Fe2O3 impurities
Mineral
Muscovite Mica (in Quartz matrix)
Potassium aluminum silicate hydroxide fluoride (KAl2(AlSi3O10)(F,OH)2)
mineral
Pumice
Pumice (Vesicular Felsic Glass)
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Quartz with mica and feldspar (Pegmatite fragment)
Granitic Pegmatite (composed mainly of SiO2 with KAlSi3O8)
igneous
Granite
Phaneritic Plutonic Felsic Rock (SiO2, KAlSi3O8, NaAlSi3O8, CaAl2Si2O8)
igneous
Anthracite Coal
Anthracite (Carbon C)
metamorphic
Diamond Plate (Steel)
Alloyed Carbon Steel or Aluminum with 'Durbar' pattern
not a rock (Man-made industrial metal)
Limestone
CaCO3 (principally Calcite)
sedimentary
Granitic Pegmatite with Schorl
Granitic Pegmatite (NaAlSi3O8, KAlSi3O8, SiO2) with Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
igneous
Granite Pebble
Granite
igneous
Synthetic Costume Accessory (Non-Geological)
Polyester and Acrylic Fiber (Anthropogenic polymer)
Synthetic / Man-made textile
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Basalt
Basalt (Aphanitic Mafic Igneous Rock)
igneous
Sandstone
Arenite (SiO2 primarily)
sedimentary
Blue Sapphire
Corundum (Al2O3)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Pumice
Pumice (Amorphous volcanic glass)
igneous
Pegmatite
Pegmatitic Granite
igneous
Pegmatite
Granitic Pegmatite
igneous
Diamond (or Cubic Zirconia)
Carbon (C) / Cubic Zirconium Dioxide (ZrO2)
mineral