Garnet Schist
Mica Schist with Almandine (Fe3Al2(SiO4)3)
Category
Browse metamorphic rock (for both nephrite and jadeite) specimens identified by the Rock Identifier community.
Garnet Schist
Mica Schist with Almandine (Fe3Al2(SiO4)3)
Schist
Mica Schist
Pyrite (or Fool's Gold)
Pyrite (FeS₂)
Weathered granite or granitic gneiss
Granite; primarily quartz, feldspar, and mica
Banded Gneiss
Gneiss (Metamorphic Rock)
Chert (Flint Nodule)
Microcrystalline and Cryptocrystalline Quartz (SiO2)
Quartz Vein in Metamorphic Rock
Quartzite or Schist host with Quartz (SiO2) intrusion
Quartz
Quartz (SiO₂)
Quartz Vein in Metamorphic Rock
Quartz-veined Schist or Gneiss
Green Aventurine and Clear Quartz
Green Aventurine (Silicon Dioxide - SiO2 with Fuchsite inclusions); Clear Quartz (Silicon Dioxide - SiO2)
Gneiss (Metamorphic Pebble)
Gneissic Metamorphic Rock
Rounded quartz-veined pebble
Likely quartz-veined metamorphic rock; exact host rock is indeterminate from the image
Banded Gneiss / Veined Metamorphic Pebble
Metamorphic Rock with Quartz/Feldspar Veins
Quartzite
Quartzite
Slate
Metamorphic Pelitic Rock
Dyed Quartzite
Metamorphosed Quartz (SiO2) with synthetic pigment
Slate
Foliated Metamorphic Rock (Mainly composed of Quartz, Illite, Chlorite)
Garnet in Schist (Mica Schist with Garnet Inclusion)
Garnetiferous Mica Schist (X3Al2(SiO4)3)
Schist
Schist (metamorphic rock)
Likely dark green-gray metamorphic pebble
Indeterminate; possibly chlorite schist, serpentinite, or amphibolite
Quartz Pebble
Silicon Dioxide (SiO2)
Coarse-grained gray metamorphic rock, likely gneiss
Biotite–quartz–feldspar gneiss (probable)
Green glass sphere/marble
Soda-lime glass (primarily SiO2, Na2O, CaO)
Schist
Schist
Quartz with Mica / Chlorite Inclusion
Silicon Dioxide (SiO2) with Phyllosilicate minerals
Green Slate or Metamorphic Rock with Moss/Lichen
Metamorphic rock / Phyllite or Slate variant
Gneiss
High-grade regional metamorphic rock (Foliated)
Gravel / Crushed Stone
Aggregate (mixed mineral rock fragments)
Wishing Stone (Quartz-veined Metamorphic/Sedimentary Rock)
Quartz Vein in Greywacke/Slate (SiO2 in host rock)
Rough Garnet (Almandine)
Almandine Garnet (Fe3Al2(SiO4)3)
Clear Quartz (Cut/Faceted Gemstone)
Silicon Dioxide (SiO2)
Garnet-bearing metamorphic rock, likely garnet schist or amphibolite
Almandine garnet (Fe₃Al₂Si₃O₁₂) in mica- or amphibole-rich matrix
Mica Schist
Mica Schist (Quartz-Mica Metamorphic Rock)
Greenstone, likely altered basalt
Metabasalt (chlorite–actinolite–epidote assemblage), likely greenschist-facies greenstone
Garnet Schist
Garnet-bearing Mica Schist
Banded gneiss (likely biotite-bearing)
Gneiss; quartz–feldspar–mica assemblage, with possible iron-oxide staining
Aventurine (Green Quartz)
Silicon dioxide with inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
Schist
Metamorphic rock (Schist)
Quartzite
Metamorphic Quartz Rock
Gneiss
Metamorphic rock (Gneiss)
Slate
Slate (Metamorphic Rock)
Gneiss
Gneiss (Metamorphic Rock)