Mineral In Metamorphic Rock

Schist (likely Mica Schist)

Mica Schist

Green Aventurine

Silicon Dioxide (Quartz with Fuchsite inclusions) - SiO2

Likely weathered metamorphic rock (quartzite or schist)

Quartz-rich foliated metamorphic rock; exact identification requires testing

Garnet (Almandine)

Almandine, Fe3Al2(SiO4)3

Gneiss (with Quartz Vein / Pegmatite Banding)

Metamorphic Gneiss

Gneiss

High-grade regional metamorphic rock (Foliated)

Mica Schist

Schist (Mica-rich Metamorphic Rock)

Gneiss

Gneiss (High-grade Metamorphic Rock)

Pyrite-bearing metamorphic rock (probable schist or quartzite)

Quartz–mica schist with disseminated pyrite; approximate composition SiO₂ + phyllosilicates + FeS₂

Epidote

{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)

Garnet in Schist (Mica Schist with Garnet Inclusion)

Garnetiferous Mica Schist (X3Al2(SiO4)3)

Mica Schist

Mica Schist (primarily Muscovite or Biotite sheet silicates)

Quartzite

Metamorphic rock predominantly composed of Quartz (SiO2)

Quartz Vein in Metamorphic Rock

Quartz-veined Schist or Gneiss

Likely foliated metamorphic rock, possibly schist

Mica schist or micaceous quartzite; exact identification is uncertain from the photograph

Zebra Jasper (with Chlorite/Epidote)

Silicon Dioxide (SiO2) with inclusions

Schist

Schist

Garnet-bearing Schist / Conglomerate Specimen

Metamorphic rock with almandine garnet porphyroblasts

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Mica Schist

Mica Schist (Quartz-Mica Metamorphic Rock)

Quartz Vein in Amphibolite / Gneiss

Quartz (SiO2) in Mafic Metamorphic Host Rock

Slate

Slate (foliated metamorphic rock)

Gneiss

Gneiss (Metamorphic Rock)

Quartzite

Metamorphic rock predominantly composed of Quartz (SiO2)

Gravel / Crushed Stone

Aggregate (mixed mineral rock fragments)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Mica Schist with Biotite or Muscovite

Metamorphic rock rich in sheet silicates

Quartz with Mafic/Chlorite Veins

Silicon Dioxide (SiO2) with Chlorite/Epidote cross-veining

Garnet-Mica Schist

Garnetiferous Porphyroblastic Schist

Schist

Schist (Metamorphic Rock)

Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

Garnet Schist

Garnet-bearing Mica Schist

Greenschist (Greenstone)

Greenschist (Metamorphic rock containing chlorite, actinolite, and epidote)

Serafina (Serafinite / Clinochlore)

Clinochlore (Mg5Al)(AlSi3O10)(OH)8

Dumortierite Quartz (Blue Quartz)

Al7BO3(SiO4)3O3 (Aluminum Boro-silicate included in Quartz)

Rough Garnet (Almandine)

Almandine Garnet (Fe3Al2(SiO4)3)

Auriferous Quartz (Gold-bearing Quartz)

Silicon Dioxide (SiO2) with trace Gold (Au) and Iron Oxides

Aventurine (Green Quartz)

Silicon dioxide with inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Schist

Mica Schist

Granitic Gneiss

Gneiss (Metamorphic Rock)

Gneiss with Quartz Vein

Metamorphic Gneiss

Gneiss (Metamorphic Pebble)

Gneissic Metamorphic Rock