Serpentine
Antigorite, Lizardite, and Chrysotile (Mg3Si2O5(OH)4)
metamorphic
Category
Metamorphic (Low Grade)
Browse metamorphic (low grade) specimens identified by the Rock Identifier community.
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Gneiss
High-grade foliated metamorphic rock
metamorphic
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Banded Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Nuummite
Orthoamphibole (Anthophyllite-Gedrite composition)
metamorphic
Gneiss
Gneiss (Metamorphic rock composed primarily of quartz, feldspar, and mica)
metamorphic
Gneiss
Gneiss
metamorphic
Mica Schist
Mica Schist
metamorphic
Gneiss
High-grade regional metamorphic rock (Foliated)
metamorphic
Granite Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Banded Gneiss
Gneiss (high-grade metamorphic silicate rock)
metamorphic
Garnet Schist
Almandine Garnet-bearing Mica Schist
metamorphic
Rough Corundum (Sapphire/Ruby mixture)
Corundum (Aluminum Oxide, Al2O3)
mineral
Nephrite Jade
Ca2(Mg,Fe)5Si8O22(OH)2
metamorphic
Serpentine
Antigorite/Chrysotile/Lizardite (Mg,Fe)3Si2O5(OH)4
metamorphic
Greenschist / Chloritaform Schist
Chlorite Schist (Group of Silicate Minerals)
metamorphic
Covellite
Covellite (CuS)
mineral
Gneiss
Gneiss (High-grade Regional Metamorphism)
metamorphic
Ambergris
Ambra grisea
Organic (often found by beachcombers)
Granite Gneiss
Gneiss (High-grade metamorphic rock formed from granitic precursor)
metamorphic
Gneiss
Gneissic Metamorphic Rock
metamorphic
Gneiss (specifically Granitic Gneiss)
Gneissic Metamorphic Rock
metamorphic
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Nephrite Jade
Ca2(Mg, Fe)5Si8O22(OH)2
metamorphic
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Schist
Mica Schist (Medium-grade metamorphic rock)
metamorphic
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Amber
Succinite (Resinite)
mineraloid
Lignite (Brown Coal)
Humic Lignite (Carbonaceous sedimentary rock)
sedimentary
Serpentinite
Serpentinite (composed largely of serpentine group minerals including Antigorite, Lizardite, or Chrysotile)
metamorphic
Mica Schist
Mica Schist (primarily Muscovite or Biotite KAl2(AlSi3O10)(OH)2)
metamorphic
Granitic Gneiss
Gneiss (containing Potassium Feldspar and Quartz)
metamorphic
Nuummite
Orthorhombic amphibole (Gedrite and Anthophyllite mixture) - (Mg,Fe)7Si8O22(OH)2
metamorphic
Gneiss
Gneiss
metamorphic
Gneiss (Granitic Gneiss)
Gneiss (composed primarily of Quartz, Feldspar, and Mica/Amphibole)
metamorphic
Muscovite Schist
Mica Schist (primarily KAl2(AlSi3O10)(OH)2)
metamorphic
Gneiss (Banded Gneiss)
Gneiss
metamorphic
Schist
Mica Schist (primarily consisting of muscovite KAl2(AlSi3O10)(OH)2 or biotite K(Mg,Fe)3(AlSi3O10)(OH)2)
metamorphic
Scoria
Extrusive Mafic Volcanic Rock
igneous
Granite Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Banded Gneiss and Siltstone River Stones
Gneiss (High-grade Metamorphic Rock)
metamorphic