Botryoidal Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
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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Schist (Micaceous)
Mica Schist
metamorphic
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Diorite
Diorite
igneous
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Limonite (Iron Ore)
Limonite (Iron oxide-hydroxide mixture, FeO(OH)·nH2O)
mineral
Magnetite Sand (Black Sand)
Magnetite (Fe3O4)
mineral
Sandstone
Arenite (SiO2 primarily)
sedimentary
Fuchsite
Fuchsite (a variety of Muscovite mica, K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Agate Geode Node
Cryptocrystalline Quartz (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
White Calcite
Calcium Carbonate (CaCO3)
mineral
Limonite Concretion
Limonite (Hydrated Iron Oxide) FeO(OH)·nH2O
sedimentary
Blue-dyed Quartz Druzy
Silicon Dioxide (SiO2) with artificial pigment
mineral
Turquoise in Matrix
CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminium)
mineral
Yellow Quartz
Silicon Dioxide (SiO2)
mineral
Amygdaloidal Basalt
Vesicular-Amygdaloidal Basalt (Mafic Extrusive)
igneous
Greenschist
Chlorite-actinolite schist
metamorphic
Biotite (Black Mica)
Biotite (K(Mg,Fe)3AlSi3O10(OH)2)
mineral
Red Feldspar (Orthoclase)
Orthoclase Feldspar (KAlSi3O8)
mineral
Blue Sapphire (Raw/Tumbled Corundum)
Corundum (Aluminum Oxide, Al2O3 with Fe/Ti traces)
mineral
Snowflake Obsidian
Obsidian with Cristobalite inclusions
igneous
Specular Hematite
Hematite (Fe2O3)
mineral
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Specular Hematite (Iron Ore)
Iron(III) oxide (Fe2O3)
mineral
Chert (Flint)
Silicon Dioxide (SiO2)
sedimentary
Blue Quartz (or Blue Aventurine)
Silicon Dioxide (SiO2) with inclusions (typically Crocidolite or Dumortierite)
mineral
Quartz with inclusions
Silicon Dioxide (SiO2)
mineral
Petrified Wood
Silicified Wood (SiO2)
fossil
Magnetite
Magnetite (Fe3O4)
mineral
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Green Jasper
Silicon Dioxide (SiO2) with mineral inclusions
sedimentary
Green Aventurine
Aventurine Quartz (SiO2 + Fuchsite inclusions)
mineral
Gossan (with Limonite and Hematite)
Gossanous iron-oxide rock (Fe2O3 · nH2O)
sedimentary
Aventurine
Aventurine Quartz (SiO2)
mineral
Coarse Sandstone
Arenite (SiO2 based)
sedimentary
Magnetite
Iron(II,III) oxide (Fe3O4)
mineral
Chert (Jasper variety)
Chert (SiO2)
sedimentary
Labradorite
(Ca, Na)(Al, Si)4O8
mineral
Celadonite in Basalt (Green Earth)
Celadonite (K(Mg,Fe2+)(Fe3+,Al)Si4O10(OH)2)
mineral
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral