Milky Quartz with Iron Inclusions
Silicon Dioxide (SiO2)
mineral
Category
Mineral_rock
Browse mineral_rock specimens identified by the Rock Identifier community.
Learn about Mineral_rock in the encyclopedia
View all →
Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Gneiss (specifically Banded Gneiss)
Gneiss
metamorphic
Proustite
Proustite (Ag3AsS3)
mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Limonite
FeO(OH)·n(H2O)
mineral
Basalt with Xenolith
Extrusive Igneous Rock containing Mantle Xenolith
igneous
Botryoidal Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Erythrite in Cobaltite Ore
Erythrite (Co3(AsO4)2·8H2O) with Cobaltite (CoAsS)
mineral
Limonite (Gossan)
FeO(OH)·nH2O (Hydrated Iron Oxide)
mineral
Turquoise
CuAl6(PO4)4(OH)8·4H2O (Hydrated copper aluminum phosphate)
gemstone
Wulfenite
Lead Molybdate, PbMoO4
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Geode half
Geode (often quartz/chalcedony based)
sedimentary or igneous
Milky quartz (quartz-rich rock fragment)
Quartz, silicon dioxide (SiO₂)
mineral
Quartz Vein in Sedimentary Rock
Silicon Dioxide (SiO2) with host Chert or Limestone
mineral
Shark Tooth Fossil
Vertebrate fossilized tooth (various genera such as Carcharodon, Otodus, or Negaprion)
fossil
Limonite (often after Pyrite)
Limonite (FeO(OH)·nH2O)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
sedimentary
Shark Tooth Fossil
Chondrichthyes (class) fossilized tooth
fossil
Larimar
Blue Pectolite (NaCa2Si3O8(OH))
mineral
Limonite (Iron Ore)
Hydrated ferric oxide mixture (FeO(OH)·nH2O)
sedimentary
Quartz with Iron Staining
Silicon Dioxide (SiO2) with Ferruginous Oxides
mineral
Granodiorite
Granodiorite (Intermediate intrusive igneous rock)
igneous
Pegmatite
Igneous Pegmatite
igneous
Gneiss
Gneiss
metamorphic
Sandstone with Quartz Vein
Arenite with Crystalline Silica (SiO2)
sedimentary
Pyrite in Quartz
Silicon Dioxide (SiO2) with Iron Sulfide (FeS2)
mineral
Pyrite
Iron Pyrite (FeS2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Red Sandstone
Clastic Sandstone (typically Quartz-rich with Iron Oxide)
sedimentary
Granite
Intrusive Igneous Rock
igneous
Granite
Intrusive Igneous Rock
igneous
Polished Hematite Tower
Hematite (Fe2O3)
mineral
Quartz Geode Fragment
Silicon Dioxide (SiO2)
mineral
Green Jasper Pebble
Microcrystalline Quartz (Chalcedony), SiO2
sedimentary
Limonite (Iron-rich Gossan/Laterite)
FeO(OH)·nH2O (Hydrated Iron Oxide)
mineral
Granitic Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Quartz with Sericite and Cinnabar
Silicon Dioxide (SiO2) with muscovite/sericite and mercury sulfide (HgS)
mineral
Sandstone
Sandstone (clastic sedimentary rock)
sedimentary
Apatite
Ca5(PO4)3(F,Cl,OH)
mineral