Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrous ferric oxide)
mineral
Category
Mineral In Metamorphic Rock
Browse mineral in metamorphic rock specimens identified by the Rock Identifier community.
Aventurine Quartz
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
mineral
Sandstone (Tumbled/River Pebble)
Arenite (composed primarily of SiO2)
sedimentary
Quartz Druzy Geode
Silicon Dioxide (SiO2) - Crystalline Variety
mineral
Shale or Slaty Mudstone
Argillaceous sedimentary rock
sedimentary
Green Aventurine
Silicon Dioxide (Quartz with Fuchsite inclusions), SiO2 + K(Al,Cr)2AlSi3O10(OH)2
mineral
Rutilated Quartz
Quartz (SiO2) with Rutile (TiO2) inclusions
Mineral
Green Aventurine
Silicon dioxide with Fuscite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
mineral
Biotite on Matrix
Biotite (K(Mg,Fe)3AlSi3O10(F,OH)2)
mineral
Schist
Mica Schist
metamorphic
N/A (Non-Geological Object)
N/A
Sandstone (Wonderstone)
Arenite (composed primarily of SiO2 with Fe2O3 impurities)
sedimentary
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 oxides)
sedimentary
Sandstone (Banded Sandstone)
Clastic Sedimentary Rock (primarily SiO2 with iron oxide impurities)
sedimentary
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Sandstone
Arenite (SiO2 predominantly)
sedimentary
Quartzite
Quartzite (SiO2)
metamorphic
Magnetite Sand (Black Sand)
Magnetite (Fe3O4)
mineral
Biotite Schist
Biotite Schist
metamorphic
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Garnet Schist
Almandine Garnet Schist
metamorphic
Pyrite
Iron Sulfide (FeS2)
mineral
Porphyritic Basalt (with Pyrolusite or Iron-oxide staining)
Porphyritic Basalt (Mafic Extrusive)
igneous
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrous ferric oxide)
mineral
Gneiss
Gneiss (Metamorphic high-grade)
metamorphic
Epidote (likely Unakite component or Epidosite)
Epidote (Ca2(Al2Fe)(SiO4)(Si2O7)O(OH))
metamorphic
Massive Quartz (Milky or Gray)
Silicon Dioxide (SiO2)
mineral
Quartz / Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Sodalite
Sodalite (Na4Al3Si3O12Cl)
Mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Basalt
Basalt (Mafic Extrusive Igneous Rock)
igneous
Sandstone (River Rock)
Arenite (composed primarily of SiO2)
sedimentary
Chalcopyrite
Chalcopyrite (CuFeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Schist
Mica Schist
metamorphic
Smoky Quartz (with inclusions)
Silicon Dioxide (SiO2)
mineral
Raw Corundum (Sapphire/Ruby variant)
Aluminum oxide (Al2O3)
mineral
Specular Hematite (Specularite)
Iron(III) oxide (Fe2O3)
mineral
Magnetite
Magnetite (Fe3O4)
mineral
Kyanite
Kyanite (Al2SiO5)
mineral