Quartz (Druzy)
Silicon Dioxide (SiO2)
Category
Browse igneous and sedimentary mixture specimens identified by the Rock Identifier community.
Quartz (Druzy)
Silicon Dioxide (SiO2)
Limonite (Iron Ore)
Hydrous ferric oxides (FeO(OH)·nH2O)
Bumblebee Jasper
Fossiliferous Volcanic Rock (composed of Calcium Carbonate, Manganese Oxides, and Arsenic Sulfides)
Granite
Granite (compositional mixture of Quartz, Feldspar, and Mica)
Bog Iron / Limonite Concretion
Goethite/Limonite mixture (FeO(OH)·nH2O)
Asphalt (Road Aggregate)
Asphalt concrete / Bituminous mixture
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrous ferric oxide)
Moonstone
Orthoclase Feldspar (KAlSi3O8) or Albite mixtures
Greywacke with Quartz Veins
Lithic Sandstone (Greywacke) with SiO2 inclusions
Bumble Bee Jasper
Volcanic Tuff (mixture of SiO2, CaCo3, S, and As2S3)
Chalcedony
Silicon dioxide (SiO2) - Microcrystalline quartz
Chalcedony
Chalcedony (SiO2)
Limonite and Goethite (Ironstone)
Hydrous Iron Oxide Mixture (FeO(OH)·nH2O)
Zebra Jasper (Zebra Stone)
Silicon Dioxide (SiO2) with iron oxide and manganese inclusions
Diorite
Diorite (intermediate intrusive igneous rock)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Yellow Chalcedony (Agate Pebble)
Silicon Dioxide (SiO2)
Chalcedony (Common Agate)
Silicon Dioxide (SiO2)
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
Pyrite
Iron Sulfide (FeS2)
Specular Hematite
Hematite (Fe2O3)
Pyrite
Iron Disulfide (FeS2)
Pyrite
Iron Sulfide (FeS2)
Galena
Lead Sulfide (PbS)
Epidote with Magnetite/Hematite inclusions
Epidote (Ca2(Al2,Fe3+)(SiO4)3(OH)) with Iron Oxides
Septarian Nodule
Septarian Nodule (Mixture of Calcite, Aragonite, and Limestone/Clay)
Septarian Nodule
Septarian concretion (Complex mixture of Siderite, Calcite, and Aragonite)
Chalcedony (Moonstone variant or White Agate)
Silicon Dioxide (SiO₂)
Asphalt (Bituminous Concrete)
Bituminous mix / Anthropogenic conglomerate
Indian Agate
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Limonite (Iron Ore/Hydrated Iron Oxide)
Limonite (mixture of FeO(OH)·nH₂O minerals, mainly Goethite, FeO(OH) and Lepidocrocite, FeO(OH))
Milky Quartz (Druzy Geode fragment)
Silicon Dioxide (SiO2)
Quartz (milky quartz variety)
Quartz (SiO₂)
Chert (and Chalcedony/Agate mixture)
Microcrystalline Quartz (SiO2)
Chert (and Jasper/Chalcedony mixture)
Microcrystalline Quartz (SiO2)
Shale or Argillite
Shale (sedimentary) / Argillite (metamorphic)
Nuummite
Nuummite (Orthoamphibole rock / Anthophyllite-Gedrite blend)
Bauxite
Bauxite (Mixture of Al(OH)3, AlO(OH), and Fe2O3)
Septarian Nodule
Septarian concretion (Complex mixture of Siderite/Limestone, Calcite, and Aragonite)
Bauxite
AlOx(OH)3-2x (mixture of Gibbsite, Boehmite, and Diaspore)
Epidote
Epidote; Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
Chalcedony (Agate/Carnelian precursor)
Chalcedony (Silicon Dioxide, SiO2)