Rhodochrosite
Manganese Carbonate (MnCO3)
mineral
Category
Igneous, Sedimentary, Metamorphic
Browse igneous, sedimentary, metamorphic specimens identified by the Rock Identifier community.
Learn about Igneous, Sedimentary, Metamorphic in the encyclopedia
View all →
Pyrite
Iron Disulfide (FeS2)
mineral
Green Quartz (Prasiolite/Adventurine)
Silicon Dioxide with inclusions (SiO2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Painted River Rock
Artificially Coated Sedimentary Rock
sedimentary
Gossan (Iron Hat)
Limonitic Gossan (Fe-oxide/hydroxide complex)
igneous
Greenschist
Greenschist (Chlorite Schist)
metamorphic
Greenschist (Greenstone)
Greenschist (Metamorphic rock containing chlorite, actinolite, and epidote)
metamorphic
Sapphire (Corundum variety)
Sapphire (Al₂O₃)
Mineral
Leopard Skin Jasper
Orbicular Jasper (Silicon Dioxide, SiO2)
sedimentary
Greenstone / Greenschist
Greenschist (contains chlorite, epidote, actinolite)
metamorphic
Greenstone
Metabasalt (composed of chlorite, epidote, and actinolite)
metamorphic
Eclogite
Eclogite (Omphacite-Garnet Rock)
metamorphic
Greenstone
Metabasalt or Greenschist (often contains Chlorite, Actinolite, and Epidote)
metamorphic
Nuummite
Nuummite (intergrowth of orthoamphiboles Anthophyllite and Gedrite, (Mg,Fe)7Si8O22(OH)2)
metamorphic
Epidote in Matrix
Epidote; Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Granite Gneiss
Gneiss (high-grade metamorphic rock)
metamorphic
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Green Schist
Greenschist (composed of Chlorite, Actinolite, and Epidote)
metamorphic
Unakite or Epidosite
Epidosite (Mineral composition: Epidote, Feldspar, and Quartz)
metamorphic
Marble
Marble (metamorphosed limestone/dolostone). Predominantly composed of Calcite (CaCO3) for marble derived from limestone, or Dolomite (CaMg(CO3)2) for marble derived from dolostone.
Metamorphic Rock
Diorite (Gneissic)
Diorite with possible metamorphic foliation
igneous
Gold-bearing Quartz Ore
Auriferous Quartz (SiO2 + Au)
metamorphic
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
metamorphic
Serpentine
Serpentine group, including Antigorite, Lizardite, and Chrysotile (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4
metamorphic
Quartz (likely milky/gray variety)
Quartz (SiO₂)
Mineral
Blue Kyanite
Kyanite (Al2SiO5)
mineral
Kyanite (Blue Kyanite)
Kyanite (Al2SiO5)
mineral
Garnet (Almandine)
Almandine Garnet (Fe3Al2(SiO4)3)
Mineral
Specular Hematite (on Schist/Matrix)
Hematite (Alpha-Fe2O3)
mineral
Garnet in Matrix
Almandine or Spessartine Garnet in Quartz/Schist Matrix (X3Al2(SiO4)3)
metamorphic
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) in matrix
mineral
Milky Quartz
Quartz / Silicon Dioxide (SiO2)
mineral
Pyrite Cubes in Matrix
Iron Disulfide (FeS2) in Host Matrix
mineral side rock
Red Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
sedimentary
Red Jasper
Red Jasper (SiO2)
sedimentary
Rhodonite
Manganese Inosilicate (Mn,Fe,Mg,Ca)SiO3
mineral
Bull Quartz with Mica and Host Rock
Massive Quartz (SiO2) with Muscovite/Chlorite inclusions
igneous
Ruby in Zoisite
Ruby (α-Al2O3) embedded in Zoisite (Ca2Al3(SiO4)3(OH)) with some Hornblende
Metamorphic Rock (composed of multiple minerals)
Greenstone / Greenschist
Metamorphosed mafic igneous rock (Greenschist facies)
metamorphic
Greenstone (Epidosite/Altered Diorite)
Metabasalt or Meta-andesite / Epidotized Diorite
metamorphic
Greenstone / Metabasalt
Chlorite schist or Epidiorite
metamorphic