Fossilized Bivalve Shell
Class Bivalvia (fossilized)
fossil
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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Seashell Fossil
Gastropoda fossil
fossil
Gneiss
Foliated Metamorphic Rock
metamorphic
Mica Schist / Granite
Mica Schist (Silicate metamorphic rock)
metamorphic
Snowflake Obsidian
Volcanic Glass with Spherulitic Cristobalite (SiO2)
igneous
Prehnite
Ca2Al(AlSi3O10)(OH)2
mineral
Astrophyllite
Astrophyllite (K2NaFe7Ti2Si8O26(OH)4F)
mineral
Black Obsidian
Volcanic Glass (predominantly SiO2)
igneous
Sandstone
Arenite (primarily composed of SiO2)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Sunstone (Feldspar)
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8 with inclusions of Hematite/Goethite
mineral
Ruby
Corundum (Al2O3)
mineral
Sandstone
Arenite (primarily SiO2)
sedimentary
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Almandine Garnet
Almandine, Fe3Al2(SiO4)3
mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(F,OH)2)
mineral
Sandstone
Arenite
sedimentary
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
gemstone
Septarian Nodule (Dragon Stone)
Septarian Concretion (CaCO3 + MgCO3 + Clay)
sedimentary
Rose Quartz
Silicon dioxide (SiO2) with traces of titanium, iron, or manganese
mineral
Yellow Aventurine
Silicon Dioxide (SiO2) with inclusion of Mica
Mineral (Variety of Quartz)
Mahogany Obsidian
Volcanic glass (high silica) with inclusions of Magnetite or Hematite
igneous
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Kaolinite Claystone
Al2Si2O5(OH)4 (Kaolinite)
sedimentary
Diorite with Xenolith
Intermediate Plutonic Igneous Rock (Diorite)
igneous
Sandstone
Arenite
sedimentary
Serpentine
Serpentinite (Mg, Fe, Ni)3Si2O5(OH)4
metamorphic
Potassium Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
mineral
Greenstone
Greenschist (Metamorphosed Mafic Rock)
metamorphic
Chrysotile Serpentine (Asbestos in Matrix)
Chrysotile Mg3Si2O5(OH)4
metamorphic
Corundum (variety Ruby/Sapphire)
Aluminum Oxide (Al2O3)
mineral
Fluorite (Green Fluorite)
Calcium Fluoride (CaF2)
mineral
Aragonite (Botryoidal/Coralloidal variety)
Aragonite (CaCO3)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Fossilized Shark Tooth (Basal Bone)
Otodus sp. (Mineralized Hydroxyapatite)
sedimentary
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Copper Ore (Malachite/Chrysocolla bearing)
Cupriferous rock containing secondary copper minerals like Cu2CO3(OH)2
mineral
Obsidian
Volcanic Glass (SiO2 with impurities)
igneous
Pink Granite
Phaneritic Felsic Igneous Rock (composed primarily of K-Feldspar, Quartz, and Mica)
igneous
Granodiorite (Weathered)
Granodiorite
igneous
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral