Jade (Nephrite or Jadeite)
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (Na(Al,Fe3+)Si2O6)
Metamorphic Rock / Mineral
Category
Mineral In Metamorphic Rock
Browse mineral in metamorphic rock specimens identified by the Rock Identifier community.
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Quartzite
Quartzite (SiO2 silicon dioxide)
metamorphic
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Dark gray slate (possibly argillite or shale)
Slate, a low-grade metamorphic rock derived mainly from shale; composition commonly quartz, illite/muscovite, chlorite, and clay minerals
metamorphic
Schist with Biotite Inclusion
Biotite-bearing Mica Schist (K(Mg,Fe)3AlSi3O10(F,OH)2)
metamorphic
Yellow Agate (Banded Chalcedony)
Silicon Dioxide (SiO2)
sedimentary
Agate
Agate (a cryptocrystalline variety of Quartz, SiO₂)
Mineral
Quartzite
Metamorphic Quartzite (SiO2)
metamorphic
Mixed rounded stream pebbles
Most appear to be granitic and mafic igneous rocks, including granite, gneiss, basalt, and possibly quartzite; exact identification is uncertain from the image.
igneous
Greenschist
Greenschist (Chlorite-actinolite schist)
metamorphic
Quartzite Pebble (with Quartz Vein)
Meta-quartzite (SiO2-dominated metamorphic rock)
metamorphic
River Pebble (Gneiss or Quartzite variant)
Metamorphic rock specimen (likely Quartzite or Gneiss)
metamorphic
Quartzite (River-worn)
Metamorphic rock predominantly composed of Quartz (SiO2)
metamorphic
Quartzite
Metamorphic rock primarily composed of Quartz (SiO2)
metamorphic
Quartzite
Metamorphic Rock consisting chiefly of Quartz (SiO2)
metamorphic
Quartzite (Iron-stained River Rock)
Metamorphic Rock consisting primarily of Quartz (SiO2)
metamorphic
Red Quartzite
Metamorphic Rock (rich in SiO2 with hematite inclusions)
metamorphic
Red Quartzite River Stone
Metamorphic Rock (composed mainly of Quartz, SiO2)
metamorphic
Slate
Slate (Low-grade foliated metamorphic rock)
metamorphic
Yellow Quartzite Pebble
Metamorphic rock predominantly composed of Quartz (SiO2)
metamorphic
River Rock (likely Gneiss or Quartzite)
Metamorphic rock specimen (potentially Foliated Gneiss)
metamorphic
Anthracite Coal
Anthracite (Carbon-based sedimentary-metamorphic rock)
metamorphic
Moonstone
Orthoclase / Feldspar (KAlSi3O8)
gemstone
Apatite
Fluorapatite, Chlorapatite, and Hydroxylapatite (Ca5(PO4)3(F,Cl,OH))
mineral
Quartz with inclusions
SiO2
mineral
Garnet in Matrix
Almandine or Pyrope Garnet (X3Y2(SiO4)3) in Schist or Eclogite matrix
metamorphic
Quartzite Pebble
Metamorphic Quartz (SiO2)
metamorphic
Quartzite
Metamorphic Quartz Sandstone
metamorphic
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Quartz
Quartz (Silicon Dioxide, SiO2)
Mineral
Quartz Geode
Quartz (Silicon Dioxide, SiO2)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite (Gold-toned)
Crystalline Quartz Metamorphite (SiO2)
metamorphic
Quartzite
Quartzite (consisting primarily of SiO2)
metamorphic
Quartzite
Quartzite (composed mainly of SiO2)
metamorphic
Yellow Quartzite (River Pebble)
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
metamorphic
Green Aventurine
Silicon dioxide (SiO2) with Fuchsite inclusions
metamorphic