Zoisite with Rubellite (Ruby in Zoisite)
Zoisite with inclusions of Hornblende (Anyolite)
metamorphic
Category
Metamorphic (Modified)
Browse metamorphic (modified) specimens identified by the Rock Identifier community.
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Muscovite
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Zoisite with Ruby
Anyolite (Calcium aluminum hydroxy silicate with Corundum) Ca2Al3(SiO4)3(OH)
metamorphic
Fuchsite in Quartz
K(Al,Cr)2(AlSi3O10)(OH)2 in SiO2
Metamorphic Rock / Mineral Association
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Rhodonite
Rhodonite (Mn,Fe,Mg,Ca)SiO3
mineral
Phyllite (possibly low-grade greenish slate)
Foliated metamorphic rock composed mainly of very fine-grained quartz, mica, and chlorite; approximate composition varies and has no single fixed chemical formula
metamorphic
Magnetite
Magnetite (Iron(II,III) oxide, Fe3O4)
mineral
Quartzite pebble
Quartzite (SiO2)
metamorphic
Quartzite Fragment
Crystalline Silicon Dioxide (SiO2)
metamorphic
Mica Schist with Garnet
Garnet-Mica Schist
metamorphic
Epidote
Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
mineral
Glaucophane / Blueschist
Glaucophane (Na2Mg3Al2Si8O22(OH)2)
metamorphic
Green Schist
Greenschist (containing Chlorite, Actinolite, and Epidote)
metamorphic
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals like Antigorite, Lizardite, and Chrysotile)
metamorphic
Chalcopyrite
CuFeS2 (Copper Iron Sulfide)
mineral
Quartz with Inclusions
Silicon Dioxide (SiO2)
mineral
Galena
Lead Sulfide (PbS)
mineral
Clear Quartz (Faceted Crystal)
Silicon Dioxide (SiO2)
mineral
Ruby
Corundum (Al2O3 with chromium trace elements)
gemstone
Blue Apatite
Ca5(PO4)3(F,Cl,OH)
mineral
Dumortierite Quartz (Blue Quartz)
Al7BO3(SiO4)3O3 with Quartz (SiO2)
mineral
Pyrite (or Arsenopyrite / Ore mineral aggregate)
FeS2 (Iron Sulfide)
mineral
Pyrite or Chalcopyrite
Iron sulfide (FeS2) or Copper iron sulfide (CuFeS2)
mineral
Agate
SiO2
Mineral/Gemstone
Orthoclase Feldspar
Potassium aluminum silicate (KAlSi3O8)
mineral
Epidote in Matrix (likely Amphibolite or Gneiss)
Epidote (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH)) in Metamorphic Matrix
metamorphic
Garnet
Garnet Group (Silicate Minerals), formula varies e.g., Alm: Fe3Al2(SiO4)3
mineral
Likely slate or fine-grained metamorphic rock
Slate; predominantly microcrystalline quartz, mica, and clay minerals
metamorphic
Dark gray fine-grained stone, likely basalt
Basalt; chiefly plagioclase feldspar and pyroxene, commonly with minor olivine and iron oxides
igneous
Greenstone (or Greywacke/Metasediment Pebble)
Metamorphosed Mafic Rock / Chlorite Schist
metamorphic
Greenschist
Greenschist (chlorite schist)
metamorphic
Mica Schist
Mica Schist (Silicate rock)
metamorphic
Mica Schist with Quartz
Mica Schist (primarily Muscovite or Biotite with Quartz)
metamorphic
Greenschist
Greenschist
metamorphic
Greenschist
Greenschist (Chlorite Schist)
metamorphic
Greenstone
Metabasalt / Chlorite Schist
metamorphic
Greenschist (Greenstone)
Greenschist (Metamorphic rock containing chlorite, actinolite, and epidote)
metamorphic
Green Aventurine
Silicon Dioxide (Quartz with Fuchsite inclusions), SiO2 + K(Al,Cr)2AlSi3O10(OH)2
mineral
Banded Gneiss Pebble
Banded Gneiss
metamorphic
Banded Quartzite with Epidote and Iron Oxides
Metasedimentary Quartzite (SiO2) with inclusions
metamorphic
Greenschist
Chlorite schist
metamorphic