Greenschist
Chlorite schist
metamorphic
Category
Sedimentary And Metamorphic
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Greenschist
Chlorite schist
metamorphic
Garnet Schist
Almandine-Mica Schist
metamorphic
River Pebble (Gneiss or Quartzite mixture)
Metamorphic rock (Commonly Gneissic)
metamorphic
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Gneiss
Foliated Metamorphic Rock
metamorphic
Schist
Metamorphic Rock (Schist)
metamorphic
Quartzite
Metamorphic rock (SiO2)
metamorphic
Gneiss
Gneiss (Metamorphic rock)
metamorphic
Blue Kyanite
Kyanite (Al2SiO5)
mineral
Anthracite Coal
Anthracite (Metamorphic Coal)
sedimentary
Milky Quartz in Matrix
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Slate
Metamorphic Pelitic Rock
metamorphic
Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Gneiss
Foliated Metamorphic Rock
metamorphic
Banded gneiss (likely amphibolite-bearing gneiss)
Gneiss; quartz–feldspar–mica/amphibole aggregate
metamorphic
River Quartzite Siltstone
Quartz-rich Meta-siltstone (SiO2 dominated)
metamorphic
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
metamorphic
Pink Rhodonite
Manganese Silicate (MnSiO3)
mineral
Epidote
Epidote Group (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
metamorphic
Mica Schist
Mica Schist (primarily composed of Muscovite/Biotite)
metamorphic
Biotite Schist
Biotite Gneiss/Schist (approximate formula K(Mg,Fe)3AlSi3O10(OH)2)
metamorphic
Magnetite (Lodestone)
Magnetite (Fe3O4)
mineral
Slate
Slate; predominantly fine-grained phyllosilicates (muscovite/illite, chlorite) with quartz and feldspar
metamorphic
Garnet
Garnet (X3Y2(SiO4)3)
mineral
Gneiss (Augen Gneiss)
Augen Gneiss
metamorphic
Slate
Metamorphic Mudstone / Shale
metamorphic
River Pebble (Gneiss/Schist mix)
Metamorphic rock aggregate
metamorphic
Quartz (likely a form of massive or vein quartz)
Quartz (SiO₂)
Mineral
Mica Schist
Mica Schist (predominantly Muscovite/Biotite Schist)
metamorphic
Biotite Schist
Metamorphic Rock (Schist)
metamorphic
Banded Gneiss Pebble
Gneiss (Metamorphic Rock)
metamorphic
Banded Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Granitic Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Magnetite (Lodestone)
Magnetite (Fe3O4)
mineral
Graphite
Graphite (Native Carbon), Formula: C
Metamorphic
Graphite
Graphite (Carbon, C)
metamorphic
Jasper with Hematite Inclusions
Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3)
sedimentary
Pyrite
Iron Disulfide (FeS2)
Mineral
Quartzite Pebble
Metamorphic Quartzite (SiO2)
metamorphic
Quartz pebble
Silicon dioxide (SiO2)
mineral