Schist
Mica Schist
metamorphic
Category
Metamorphic Rock (For Nephrite And Some Jadeite); Mineral (For Jadeite)
Browse metamorphic rock (for nephrite and some jadeite); mineral (for jadeite) specimens identified by the Rock Identifier community.
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Green serpentine or nephrite-like stone
Serpentine-group minerals, chiefly antigorite/lizardite; possibly nephrite jade (actinolite)
metamorphic
Slate
Foliated Metamorphic Rock (composed primarily of Quartz, Muscovite, and Illite)
metamorphic
Greenstone with rusty mineral patches
Greenstone (metamorphosed mafic volcanic rock; likely chlorite–epidote–actinolite assemblage)
metamorphic
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Gneiss (Granitic Gneiss)
Gneiss (composed primarily of Quartz, Feldspar, and Mica/Amphibole)
metamorphic
Banded Gneiss
Gneiss
metamorphic
Gneiss
High-grade Metamorphic Gneiss
metamorphic
Serpentine (Green Jasper variety)
Antigorite/Chrysotile, Mg3Si2O5(OH)4
metamorphic
Agate (Geode nodule)
Cryptocrystalline Quartz (SiO2)
mineral
Pyritic Gneiss
Metamorphic Gneiss with Pyrite inclusions
metamorphic
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Greenschist
Greenschist facies rock
Metamorphic
Gneiss (River Cobble)
Gneiss (Foliated Metamorphic Rock)
metamorphic
Almandine Garnet
Almandine (Fe3Al2Si3O12)
mineral
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Likely polished bronzite or serpentine-rich rock
Probable bronzite, an iron-bearing orthopyroxene (Mg,Fe)SiO₃; exact identification requires testing
mineral
Serpentine-rich rock (possibly lizardite/serpentinite)
Serpentinite, composed chiefly of serpentine-group minerals such as lizardite, antigorite, or chrysotile
metamorphic
Granitic Gneiss
Gneiss (Complex silicate composition)
metamorphic
Tumbled pale-green mineral specimen, likely aventurine or serpentine
Quartzite with fuchsite (aventurine) or serpentine-group mineral; exact identification requires testing
mineral
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Schist
Mica Schist
metamorphic
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Aquamarine with Sunstone
Aquamarine (Be3Al2Si6O18), Sunstone (Na,Ca)Al(Si,Al)Si2O8
Mineral
Slate
Foliated Metamorphic Rock (Slate)
metamorphic
Gneiss (Metamorphic Rock)
Gneiss (variable mineral formula primarily containing Quartz, Feldspar, and Mica)
metamorphic
Banded Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Slate
Foliated Metamorphic Rock
metamorphic
Polished green aventurine (likely)
Quartz-rich aventurine; silicon dioxide (SiO₂) with green fuchsite mica or chlorite inclusions
mineral
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals: (Mg, Fe)3Si2O5(OH)4)
metamorphic
Weathered mica-rich metamorphic rock, likely schist
Muscovite/biotite schist with quartz and feldspar
metamorphic
Gneiss (Cobble)
Gneiss
metamorphic
Gneiss
Gneiss (high-grade metamorphic rock)
metamorphic
Granitic Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Gneiss
Gneiss
metamorphic
Quartz–mica schist or mica-rich quartzite
Quartz with muscovite/biotite mica; likely a quartz-mica schist, possibly pegmatitic
metamorphic
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Gneiss (specifically a Banded Gneiss pebble)
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Schist
Mica Schist (Metamorphic Rock)
metamorphic
Nuummite
Nuummite (mixture of Gedrite and Anthophyllite)
metamorphic
Rounded dark river pebble, possibly serpentinite
Serpentinite (serpentine-group minerals; commonly lizardite/chrysotile/antigorite), identification tentative
metamorphic
Green serpentine (likely serpentinite)
Serpentine-group minerals, commonly antigorite, lizardite, and/or chrysotile; rock name: serpentinite
metamorphic