Greenish rock with white veins, possibly epidote or chlorite bearing rock with quartz/calcite veins
Altered mafic rock or Epidosite
metamorphic or igneous alteration
Category
Metamorphic Or Igneous Alteration
Browse metamorphic or igneous alteration specimens identified by the Rock Identifier community.
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Sapphire
Corundum (Al2O3)
mineral
Serafina (Serafinite / Clinochlore)
Clinochlore (Mg5Al)(AlSi3O10)(OH)8
mineral
Quartz-rich pegmatite with green epidote or chlorite
Pegmatitic quartz–feldspar rock, likely containing epidote (Ca₂(Al,Fe)₃Si₃O₁₂(OH)) and/or chlorite
igneous
Serpentine
Serpentine group ((Mg,Fe,Ni,Al,Zn,Mn)3(Si,Al)2O5(OH)4)
metamorphic
Serpentine (Serpentinite)
Serpentine group ((Mg,Fe,Ni,Al,Zn,Mn)3(Si,Al)2O5(OH)4)
metamorphic
Epidote-bearing Rock
Epidote / Silicate mineral aggregate
metamorphic
Raw Garnet (Hessonite / Spessartine)
Silicate mineral group (X3Y2(SiO4)3)
gemstone
Epidote
Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
mineral
Prehnite with Epidote and Quartz
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Weathered mafic metamorphic rock, likely serpentinite or altered basalt
Probably serpentinized ultramafic rock; commonly dominated by serpentine-group minerals, with magnetite and altered pyroxene/olivine
metamorphic
Unakite
Altered Granite (Epidotized Granite)
metamorphic
Epidote with Quartz/Feldspar
Epidote (Ca2(Al, Fe)3(SiO4)3(OH)) with associated minerals in a host rock
Mineral/Metamorphic rock
Epidote
{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
mineral
Greenish Metamorphic Rock (likely containing epidote or chlorite)
Metamorphic rock, possibly epidosite or greenstone
Metamorphic
Blue Aventurine
Quartz (SiO2) with inclusions
mineral
Aventurine (Green Aventurine)
Silicon Dioxide with Fuchsite inclusions (SiO2)
mineral
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Feldspar
Triclinic or Monoclinic Tectosilicate (e.g., KAlSi3O8)
mineral
Epidote
Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
mineral
Nephrite Jade
Nephrite
Mineral/Rock
Greenstone
Metamorphic Greenstone (Greenschist facies)
metamorphic
Epidote with Quartz Vein
Epidote-bearing metamorphic rock with quartz (Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic
Serpentine
Antigorite-Lizardite-Chrysotile (Mg3Si2O5(OH)4)
metamorphic
Serpentine
Antigorite, Lizardite, and Chrysotile (Mg3Si2O5(OH)4)
metamorphic
Serpentine / Antigorite
Mg3Si2O5(OH)4 (Serpentine Group)
metamorphic
Fuchsite in Quartz (or Emerald in Fuchsite / Verdite)
Chromian Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2) in Quartz Matrix
metamorphic
Unakite
Altered Granite (Epidotized Granite)
metamorphic
Epidote in Quartz (Epidosite)
Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
metamorphic
Lapis Lazuli
Lapis Lazuli (Rock containing Lazurite, Calcite, and Pyrite)
metamorphic
Emerald
Beryl (Be3Al2(SiO3)6)
gemstone
Milky Quartz in Epidote Host Rock
Crystalline Silicon Dioxide (SiO2) with Epidote Ca2(Al,Fe)3(SiO4)3(OH)
mineral
Granite
Granite, a coarse-grained felsic intrusive igneous rock composed mainly of quartz, feldspar, and mica
igneous
Dearest Jewelry (Multigemstone)
Combination of Diamond (C), Emerald (Be3Al2Si6O18), Amethyst/Rock Crystal (SiO2), Ruby (Al2O3), Emerald (Be3Al2Si6O18), Sapphire (Al2O3), and Topaz (Al2SiO4(F,OH)2)
Mineral
Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
mineral
Quartz Vein / Quartzite Specimens
Silicon Dioxide (SiO2)
mineral
Serpentine
Serpentine group (Mg,Fe,Ni,Al,Zn,Mn)3(Si,Fe,Al)2O5(OH)4
metamorphic
Fuchsite (Green Muscovite / Mica Schist)
Chromian Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Epidote
Epidote (Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic
Pale greenish quartz-bearing rock, possibly serpentine or altered feldspar
Tentatively serpentinite-related rock (serpentine-group minerals) or altered granitic material; identification is uncertain from the photograph
metamorphic
Quartz with Host Rock Matrix
Silicon Dioxide (SiO2)
mineral
Quartz with Sulfide Inclusions
Silicon Dioxide (SiO2) with metallic mineral inclusions
mineral