Ferruginous Quartz
Iron-stained Quartz (Silicon Dioxide + Fe2O3 / FeO(OH))
mineral
Category
Mineral (Refined Metal)
Browse mineral (refined metal) specimens identified by the Rock Identifier community.
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Pyrite Sun (Pyrite Dollar)
Iron Disulfide (FeS2)
mineral
Green Aventurine
Silicon dioxide (SiO2) with Fuchsite inclusions
mineral
Sunstone
Orthoclase or Oligoclase Feldspar (Na,Ca)(Al,Si)4O8
mineral
Sunstone (Feldspar variety)
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
mineral
Labradorite
(Ca, Na)(Al, Si)4O8
mineral
Limonite
FeO(OH)·nH2O (Hydrated iron oxide-hydroxide)
mineral
Sunstone
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Milky Quartz with Mica and Pyrite
Quartz (SiO2) with Muscovite (KAl2(AlSi3O10)(OH)2) and Pyrite (FeS2)
mineral
Fluorite on Matrix
Calcium Fluoride (CaF2)
mineral
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
mineral
Rainbow Fluorite
Calcium Fluoride (CaF2)
mineral
Opalite
Synthetic Opalised Glass
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Fluorite (Purple Octahedron)
Calcium Fluoride (CaF2)
Mineral
Fluorite (often referred to as Rainbow Fluorite)
Fluorite (Calcium Fluoride, CaF2)
mineral
Basalt
Mafic Igneous Rock (composed primarily of Pyroxene and Plagioclase Feldspar)
igneous
Basalt
Basalt (composition of plagioclase, pyroxene, and olivine)
igneous
Boji Stone (Pop Rocks or Moqui Marbles)
Iron-manganese oxide concretion (Goethite/Hematite/Jarosite)
sedimentary
Moqui Marble (Iron Concretion)
Hematite-Goethite Concretion
sedimentary
Ironstone (Limonite/Hematite)
Ferruginous Sedimentary Rock (composed largely of Fe2O3 and FeO(OH)·nH2O)
sedimentary
Mica Schist
Schist (Biotite/Muscovite rich)
metamorphic
Tiger's Eye (with Hematite/Jasper)
SiO2 (Silicon Dioxide) with Fe2O3 (Hematite)
mineralogical
Black Pearl (Tahitian Type)
Aragonite / Conchiolin composite (CaCO3)
mineraloid
Black Pearl (Tahitian or Irradiated Type)
Organic gemstone (Calcium Carbonate with Conchiolin Binding)
mineraloid
Vesicular Basalt with Magnetite/Hematite
Mafic Extrusive Igneous Rock (primarily Plagioclase and Pyroxene)
igneous
Biotite Schist
Schist (Biotite-dominated)
metamorphic
Greenschist
Chlorite schist
metamorphic
Mica Schist or Muscovite
KAl2(AlSi3O10)(OH)2
metamorphic
Adventurine (Green)
Silicon Dioxide (SiO2) with inclusions of Fuchsite
metamorphic
Basalt
Mafic Igneous Rock
igneous
Gabbro (River Cobble)
Gabbro (mafic intrusive rock)
igneous
Anthracite Coal
Anthracite (Carbon-rich metamorphic coal)
sedimentary
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
sedimentary
Limonite pseudomorph after pyrite
Goethite / Limonite pseudomorph after Pyrite (Fe3+O(OH) replacing FeS2)
mineral
Muscovite Mica Schist
Metamorphic Rock (Muscovite-Biotite Schist)
metamorphic
Mica Schist with Quartz
Mica Schist (KAl2(AlSi3O10)(OH)2 / SiO2)
metamorphic
Green Aventurine
Silicon Dioxide (SiO2) with inclusions
metamorphic
Quartz with Sericite and Cinnabar
Silicon Dioxide (SiO2) with muscovite/sericite and mercury sulfide (HgS)
mineral