Rock Identifier

Category

Metamorphic (Modified)

Browse metamorphic (modified) specimens identified by the Rock Identifier community.

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Nephrite Jade (Tremolite-Actinolite solid solution series, Ca2(Mg,Fe)5Si8O22(OH)2) — metamorphic

Nephrite Jade

Tremolite-Actinolite solid solution series, Ca2(Mg,Fe)5Si8O22(OH)2

Unakite (Epidotized Granite) — metamorphic

Unakite

Epidotized Granite

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Nephrite Jade (Ca2(Mg,Fe)5Si8O22(OH)2 (Actinolite-Tremolite series)) — metamorphic

Nephrite Jade

Ca2(Mg,Fe)5Si8O22(OH)2 (Actinolite-Tremolite series)

Anthracite Coal (Anthracite) — metamorphic

Anthracite Coal

Anthracite

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Quartzite River Cobble (Quartzite (SiO2)) — metamorphic

Quartzite River Cobble

Quartzite (SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Quartzite River Rock (Quartzite (SiO2)) — metamorphic

Quartzite River Rock

Quartzite (SiO2)

Unakite (Epidotized Granite) — metamorphic

Unakite

Epidotized Granite

Granitic Gneiss (Felsic Polycrystalline Gneiss) — metamorphic

Granitic Gneiss

Felsic Polycrystalline Gneiss

Anthracite Coal (Anthracite) — metamorphic

Anthracite Coal

Anthracite

Nephrite Jade (Tremolite-Actinolite solid solution Ca2(Mg,Fe)5Si8O22(OH)2) — metamorphic

Nephrite Jade

Tremolite-Actinolite solid solution Ca2(Mg,Fe)5Si8O22(OH)2

Nephrite Jade (Ca2(Mg, Fe)5Si8O22(OH)2) — metamorphic

Nephrite Jade

Ca2(Mg, Fe)5Si8O22(OH)2

Jade (Nephrite or Jadeite) (Nephrite: Ca2(Mg,Fe)5Si8O22(OH)2; Jadeite: NaAlSi2O6) — metamorphic

Jade (Nephrite or Jadeite)

Nephrite: Ca2(Mg,Fe)5Si8O22(OH)2; Jadeite: NaAlSi2O6

Nephrite Jade (Tremolite-Actinolite solid solution series [Ca2(Mg,Fe)5Si8O22(OH)2]) — metamorphic

Nephrite Jade

Tremolite-Actinolite solid solution series [Ca2(Mg,Fe)5Si8O22(OH)2]

Greenstone (Chlorite schist or Epidosite) — metamorphic

Greenstone

Chlorite schist or Epidosite

Sodalite in Quartz (Na8(Al6Si6O24)Cl2 (Sodalite) / SiO2 (Quartz)) — metamorphic

Sodalite in Quartz

Na8(Al6Si6O24)Cl2 (Sodalite) / SiO2 (Quartz)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Blue Quartzite (Metamorphosed Quartz (SiO2) with inclusions) — metamorphic

Blue Quartzite

Metamorphosed Quartz (SiO2) with inclusions

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Quartzite (Quartzite (primarily Silicon Dioxide, SiO2)) — metamorphic

Quartzite

Quartzite (primarily Silicon Dioxide, SiO2)

Greenstone (Greenschist / Meta-basalt) — metamorphic

Greenstone

Greenschist / Meta-basalt

Mica Schist (with Muscovite mica) (Mica Schist (KAl2(AlSi3O10)(OH)2)) — metamorphic

Mica Schist (with Muscovite mica)

Mica Schist (KAl2(AlSi3O10)(OH)2)

Quartzite (SiO2 (Silicon Dioxide)) — metamorphic

Quartzite

SiO2 (Silicon Dioxide)

Quartzite Pebble (Quartzite (SiO2)) — metamorphic

Quartzite Pebble

Quartzite (SiO2)

Unakite (Unakite (Epidotized Granite)) — metamorphic

Unakite

Unakite (Epidotized Granite)

Unakite (Unakite (Epidotized Granite)) — metamorphic

Unakite

Unakite (Epidotized Granite)

Unakite (Epidote in Feldspar/Quartz) (Unakite (composed of Epidote {Ca2(Al,Fe)3(SiO4)3(OH)}, Orthoclase {KAlSi3O8}, and Quartz {SiO2})) — metamorphic

Unakite (Epidote in Feldspar/Quartz)

Unakite (composed of Epidote {Ca2(Al,Fe)3(SiO4)3(OH)}, Orthoclase {KAlSi3O8}, and Quartz {SiO2})

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Unakite (Epidotized Granite) — metamorphic

Unakite

Epidotized Granite

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Tiger's Eye (Nodule/Tumbled) (Pseudomorph of Quartz after Crocidolite (SiO2 with Iron inclusions)) — metamorphic

Tiger's Eye (Nodule/Tumbled)

Pseudomorph of Quartz after Crocidolite (SiO2 with Iron inclusions)

Serpentinite (Serpentinite (Hydrous magnesium iron phyllosilicate)) — metamorphic

Serpentinite

Serpentinite (Hydrous magnesium iron phyllosilicate)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Serpentinite (Antigorite, Lizardite, and Chrysotile (Mg3Si2O5(OH)4)) — metamorphic

Serpentinite

Antigorite, Lizardite, and Chrysotile (Mg3Si2O5(OH)4)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Serpentine (Antigorite, Lizardite, or Chrysotile (Mg, Fe)3Si2O5(OH)4) — metamorphic

Serpentine

Antigorite, Lizardite, or Chrysotile (Mg, Fe)3Si2O5(OH)4

Schist with Quartz (Mica Schist (contains Muscovite/Biotite and Quartz SiO2)) — metamorphic

Schist with Quartz

Mica Schist (contains Muscovite/Biotite and Quartz SiO2)

Granitic Gneiss (Gneiss (Complex silicate composition)) — metamorphic

Granitic Gneiss

Gneiss (Complex silicate composition)