Tiger Iron
Tiger Iron (Hematite, Red Jasper, and Tiger's Eye)
metamorphic
Category
Mineral In Metamorphic Rock
Browse mineral in metamorphic rock specimens identified by the Rock Identifier community.
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Feldspar (Plagioclase / Orthoclase)
KAlSi3O8 / CaAl2Si2O8 - NaAlSi3O8
mineral
Gneiss Pebble
Gneiss
metamorphic
Quartz (Milky / Clear Quartz Fragment)
Silicon Dioxide (SiO2)
mineral
Leopard jasper (orbicular jasper)
Silicified volcanic rock, chiefly microcrystalline quartz/chalcedony (SiO₂) with feldspar and iron-oxide inclusions
metamorphic
Moonstone
Orthoclase Feldspar (KAlSi3O8)
mineral
Tumbled Amethyst
Quartz (Silicon Dioxide, SiO2, colored by iron impurities)
mineral
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Serpentinite
Serpentinite (complex silicate minerals including lizardite, chrysotile, and antigorite: (Mg,Fe)3Si2O5(OH)4)
metamorphic
Slate
Slate (Metamorphic Rock)
metamorphic
Muscovite Mica Schist
Metamorphic Rock (Muscovite-Biotite Schist)
metamorphic
Lapis Lazuli (Tumbled)
Lazurite-dominated contact metamorphic rock
metamorphic
K-Feldspar (Potassium Feldspar)
Orthoclase / Microcline (KAlSi3O8)
mineral
Schist
Mica Schist (Metamorphic rock)
metamorphic
Biotite (Black Mica)
Biotite (K(Mg,Fe++)3AlSi3O10(OH,F)2)
mineral
Gneiss (River Cobble)
Gneiss
metamorphic
Agate
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneissic Metamorphic Rock
metamorphic
Banded Rock (likely Quartz-rich)
Uncertain, likely a Metamorphic Rock (e.g., Gneiss or Schist) with prominent Quartz and other minerals
Mineral
Milky Quartz with Country Rock contact
Silicon Dioxide (SiO2) in contact with Metamorphic/Igneous rock
mineral
Fuchsite
Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Greenish Metamorphic Rock (likely containing epidote or chlorite)
Metamorphic rock, possibly epidosite or greenstone
Metamorphic
Painted River Rock
Artificially Coated Sedimentary Rock
sedimentary
Black Slate
Slate (Metamorphic Rock)
metamorphic
Epidote (Unakite component) / Green Quartzite
Ca2(Al,Fe)3(SiO4)3(OH)
metamorphic
Wishing Stone (Basalt/Metabasalt with Quartz-Feldspar Vein)
Veined Metabasalt / Veined Greywacke
metamorphic
Aventurine
Silicon Dioxide (SiO2) with inclusions
mineral
Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
mineral
Greenstone
Greenschist (Greened Metabasalt)
metamorphic
Chrysocolla on Matrix
Hydrated copper silicates ((Cu,Al)2H2Si2O5(OH)4·nH2O)
mineral
Green Aventurine
Quartz with fuchsite inclusions (SiO2)
mineral
Dyed Agate / Quartz
Silicon Dioxide (SiO2) with artificial dye
mineral
Banded Gneiss
Gneiss (Metamorphic rock)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Vein in Host Rock
Quartz (SiO2) in Mafic or Sedimentary Matrix
igneous
Gneissic Schist
Gneiss-schist (Metamorphic rock)
metamorphic
Almandine Garnet in Schist
Almandine, Fe3Al2(SiO4)3
metamorphic