Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Category
Mineral Like Byproduct (Technogenic)
Browse mineral like byproduct (technogenic) specimens identified by the Rock Identifier community.
Learn about Mineral Like Byproduct (Technogenic) in the encyclopedia
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Pyrite
Iron Sulfide (FeS2)
mineral
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Schorl (Black Tourmaline) in Matrix
Sodium Iron Aluminum Borosilicate Hydroxide (NaFe2+3Al6Si6O18(BO3)3(OH)3OH)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Yellow Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite
sedimentary
Sandstone
Arenite
sedimentary
Quartz-rich Diorite
Diorite (Phaneritic intermediate igneous rock)
igneous
Sandstone
Arenite (major component SiO2)
sedimentary
Bornite
Bornite (Cu5FeS4)
mineral
Granite
Granite (Phaneritic intrusive igneous rock)
igneous
Quartz Geode
Silicon Dioxide (SiO2)
sedimentary
Uncertain small pale mineral fragment
Indeterminate; possibly calcite or a light-colored feldspar fragment
mineral
Sandstone and Quartzite Specimens
SiO2 with varying mineral/clastic inclusions
sedimentary/metamorphic
Granite (Giallo Ornamental / Venetian Gold)
Granite (composed mainly of Quartz, Feldspar, Biotite, and Garnet)
igneous
Petrified Wood
Silicified Wood (SiO2)
fossil
Quartz with Pyrite and Iron Staining
Silicon Dioxide (SiO2) with Iron Disulfide (FeS2) inclusions
mineral
Red Howlite (Dyed)
Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5) with Red Dye
mineral
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Talc
Talc (Hydrated magnesium silicate, Mg3Si4O10(OH)2)
metamorphic
Petrified Wood
Silicified Wood (primarily SiO2)
fossil
Conglomerate
Conglomerate (Clastic Sedimentary Rock)
sedimentary
Fluorite on Host Rock
Calcium Fluoride (CaF2)
mineral
Chrysoprase
Nickel-bearing Chalcedony (SiO2 with inclusions of Ni-compounds like kerolite or pimelite)
mineral
Gneiss
Gneiss
metamorphic
Red Sandstone
Arenite (high iron oxide content)
sedimentary
Amygdaloidal Basalt with Agate/Zeolite Amygdules
Basalt (extrusive igneous rock) containing secondary mineral fillings
igneous
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Sunstone
Feldspar group (Plagioclase / Oligoclase)
mineral
Specular Hematite
Specularite (Fe2O3)
mineral
Flower Agate
Chalcedony (cryptocrystalline Quartz) with Spherulite inclusions; SiO2
mineral
Quartz with Tourmaline Inclusions
Silicon Dioxide with complex boro-silicate (SiO2 + Na(Fe3+Al6)(BO3)3Si6O18(OH)4)
mineral
Granite
Granite (Felsic Plutonic Rock)
igneous
Petrified Wood
Silicified Wood (primarily Quartz / Chalcedony: SiO2)
metamorphic
Iron-stained Quartz
Silicon Dioxide with Limonite (SiO2 + FeO(OH)·nH2O)
mineral
Breciated Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Red Sandstone
Arenite with Iron Oxide (Hematite) cement
sedimentary
Jasper with Quartz Vein
Silicon Dioxide (SiO2)
sedimentary
Petrified Wood
Silicified Wood (primarily SiO2)
sedimentary
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
metamorphic