Quartz with Actinolite or Tourmaline inclusions
Silicon Dioxide (SiO2) with Ca2(Mg,Fe)5Si8O22(OH)2 or Tourmaline group inclusions
igneous
Category
Metamorphic Mineral
Browse metamorphic mineral specimens identified by the Rock Identifier community.
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Green Aventurine
Quartz (SiO2) with fuchsite inclusions
mineral
Green Aventurine
Silicon dioxide (SiO2) with inclusions of Fuchsite mica
metamorphic
Fuchsite
Cr-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Fuchsite
Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Garnet Schist
Almandine-bearing Mica Schist
metamorphic
Garnet in Matrix (likely Almandine in Quartz/Mica Schist)
Almandine Garnet (Fe3Al2(SiO4)3) in Quartz-Feldspar host rock
metamorphic
Biotite Schist
Biotite Gneiss/Schist (approximate formula K(Mg,Fe)3AlSi3O10(OH)2)
metamorphic
Schist
Metamorphic rock (Schist)
metamorphic
Magnetite
Magnetite (Fe3O4)
mineral
Green Aventurine
Quartz (SiO2) with fuchsite inclusions
mineral
Biotite (Mica)
Biotite (K(Mg,Fe)3AlSi3O10(OH,F)2)
mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Gneiss (with Quartzite layers)
Gneissic Metamorphic Rock
metamorphic
Garnet Schist
Almandine Garnet in Mica Schist (Fe3Al2(SiO4)3)
metamorphic
Gneiss (Metamorphic Pebble)
Gneissic Metamorphic Rock
metamorphic
Banded gneiss pebble
Gneiss, typically quartz–feldspar–mica; exact mineral composition requires testing
metamorphic
Quartz Vein in Pelite (Metamorphic Rock)
Hydrothermal Quartz Veining in Metasedimentary Rock (SiO2)
metamorphic
Mica schist
Schist dominated by muscovite/biotite mica, commonly with quartz and feldspar
metamorphic
Feldspar
Feldspar (Orthoclase/Microcline)
mineral
Pink Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Beryl
Beryl (Be3Al2(SiO3)6)
mineral
Rose Quartz
Silicon Dioxide (SiO2)
mineral
Pink Quartz
Silicon Dioxide (SiO2)
mineral
Biotite Schist
Schist (Biotite-dominated)
metamorphic
Schist
Mica Schist (Metamorphic rock)
metamorphic
Emerald
Beryl (Be3Al2(SiO3)6)
gemstone
Quartz (Agate/Jasper pebble)
Silicon Dioxide (SiO2)
mineral
Schist (likely Mica Schist)
Mica Schist
metamorphic
Potassium Feldspar (Orthoclase / Microcline)
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Quartz Heart or Arrowhead Shape
Silicon Dioxide (SiO2)
mineral
Blue Apatite
Fluoroapatite (Ca5(PO4)3F)
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Kfeldspar (Potassium Feldspar)
KAlSi3O8
mineral
Quartz with Iron Oxide Inclusions
Silicon dioxide with limonite/hematite (SiO2)
mineral
Epidote
Epidote - {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
mineral
Green Aventurine
Quartz with fuchsite inclusions (SiO2)
mineral
Tiger's Eye (Brown/Golden)
Silicon dioxide (Quartz pseudomorph after crocidolite), SiO2
mineral
Black Tourmaline (Schorl)
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral