Garnet (Almandine)
Almandine Garnet (Fe3Al2(SiO4)3)
gemstone
Category
Sedimentary And Metamorphic
Browse sedimentary and metamorphic specimens identified by the Rock Identifier community.
Learn about Sedimentary And Metamorphic in the encyclopedia
View all →
Tiger Iron
Banded Iron Formation (BIF)
sedimentary
Greenstone / Glauconitic Siltstone
Metabasalt or Glauconite-rich Sedimentary Rock
metamorphic or sedimentary
Anthracite Coal
Anthracite (Carbon-based organic sedimentary rock exposed to metamorphic heat/pressure; Chemical composition is approximately 86%–98% Carbon)
metamorphic
Muscovite Mica
KAl2(AlSi3O10)(OH)2
mineral
Ruby (Corundum)
Aluminum oxide (Al2O3) with Chromium traces
mineral
Rhodonite
Rhodonite (Manganese Silicate), chemical formula: (Mn,Fe,Mg,Ca)SiO3
Mineral
Green Aventurine
SiO2 (Silicon Dioxide with Fuchsite inclusions)
mineral
Rhodonite
Manganese silicate: (Mn,Fe,Mg,Ca)SiO3
mineral
Magnetite-rich Iron Ore
Magnetite (Fe3O4)
mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Milky Quartz
Crystalline Silicon Dioxide (SiO2)
mineral
Quartzite
Metamorphic Quartzite
metamorphic
Quartzite
Metamorphic Quartzite
metamorphic
Quartzite
Metamorphic Quartzite
metamorphic
Quartzite
Metamorphic Quartzite
metamorphic
Quartzite Pebble
Metamorphic Quartzite
metamorphic
Quartzite
Metamorphic Quartzite
metamorphic
Quartzite Pebble
Metamorphic Quartzite
metamorphic
Quartzite Pebble
Metamorphic Quartzite
metamorphic
Quartzite Pebble
Metamorphic Quartzite
metamorphic
Quartzite
Metamorphic Quartzite
metamorphic
Quartzite
Metamorphic Quartzite
metamorphic
Quartzite
Metamorphic Quartzite
metamorphic
Quartzite Pebble
Metamorphic Quartzite
metamorphic
Quartzite
Metamorphic Quartzite
metamorphic
Quartzite Pebble
Metamorphic Quartzite
metamorphic
Quartzite
Metamorphic Quartzite
metamorphic
Quartzite Pebble
Metamorphic Quartzite
metamorphic
Quartzite
Metamorphic Quartzite
metamorphic
Quartzite
Metamorphic Quartzite
metamorphic
Phyllite with Quartz Vein
Metamorphic Phyllite
metamorphic
Quartzite Pebble
Metamorphic Quartzite
metamorphic
Quartzite Cobble
Metamorphic Quartzite
metamorphic
Likely hematite-rich ironstone or metallic mineral fragment
Hematite (Fe₂O₃), possibly with magnetite (Fe₃O₄) or metallic iron
mineral
Orange calcite fragment
Calcite (CaCO₃), likely iron-stained or orange-colored calcite
mineral
Veined Quartz
SiO2 (Silicon Dioxide)
Mineral
Banded Gneiss
Gneiss (typically quartz, feldspar, mica, amphibole composition)
metamorphic
Greenschist (or Serpentinite with Manganese Dendrites)
Greenschist facies metamorphic rock
metamorphic
Epidote
Epidote - Ca2(Al2,Fe3+)3(SiO4)3(OH)
mineral