Ruby in Zoisite
Ruby (Corundum, Al2O3) in Zoisite (Calcium aluminum silicate hydroxide, Ca2Al3(SiO4)3(OH)) with some Hornblende
Category
Browse metamorphic rock (specifically a rock composed of minerals) specimens identified by the Rock Identifier community.
Ruby in Zoisite
Ruby (Corundum, Al2O3) in Zoisite (Calcium aluminum silicate hydroxide, Ca2Al3(SiO4)3(OH)) with some Hornblende
Green Aventurine
Silicon Dioxide (Quartz) with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
Epidosite (Unakite-related)
Epidosite (composed primarily of Epidote and Quartz)
Green Aventurine
Silicon Dioxide (Quartz with Fuchsite inclusions), SiO2
Gneiss (specifically Granitic Gneiss)
Gneiss (composed primarily of Quartz, Feldspar, and Biotite/Amphibole)
Eclogite
Eclogite
Green Aventurine
Aventurine Quartz (SiO2 with inclusions)
Dalmation Jasper (or Dalmation Stone)
Dalmation Stone (composed of Perthite, Quartz, and Arfvedsonite)
Dalmatian Stone
Dalmatian Jasper (Aplitic Rock)
Dalmatian Stone
Dalmatian Jasper (Aplite rock composition)
Gneiss (specifically a Granitic Gneiss)
Gneiss (typically composed of Quartz, Feldspar, and Mica/Amphiboles)
Sandstone (Graywacke)
Clastic Sedimentary Rock (Lithic Sandstone)
Gneiss (specifically a Banded Gneiss cobble)
Gneiss (composed mainly of Quartz, Feldspar, and Biotite/Amphibole)
Brecciated Jasper
Silicon dioxide (SiO2) microcrystalline quartz breccia
Green Aventurine
Silicon Dioxide (Quartz) with Fuchsite inclusions (K(Al,Cr)2(AlSi3O10)(OH)2)
Dalmatian Jasper
Peralkaline Quartz-Feldspar Rock with Arfvedsonite
Schist
Schist
Granite / Gneiss Ballast Rock
Granite (Quartzo-feldspathic rock)
Dalmatian Jasper
Peralkaline Quartz-Feldspar Porphyry with Arfvedsonite
Pebble
Clast (specifically a granule or small pebble)
Banded Rock (likely Quartz-rich)
Uncertain, likely a Metamorphic Rock (e.g., Gneiss or Schist) with prominent Quartz and other minerals
Gneiss (specifically Biotite Gneiss)
Gneiss (high-grade metamorphic rock primarily composed of Silicates)
Bauxite (Laterite)
Hydrated aluminum oxides (Al2O3·nH2O)
Gneiss (specifically a Hornblende Gneiss or Micaceous Gneiss)
Gneiss (metamorphic rock composed primarily of quartz, feldspar, and mafic minerals)
Amphibolite
Amphibolite, typically composed mainly of hornblende and plagioclase feldspar
Bauxite
Bauxite (Aluminum Ore)
Green Aventurine
Silicon Dioxide (Quartz variety) with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
Foliated Metamorphic Rock (likely Gneiss or Schist)
Gneissic Metamorphic Rock
Dalmatian Jasper
Dalmatian Stone (Felsite with Arfvedsonite/Tourmaline)
Lapis Lazuli (in Matrix)
Lazurite-bearing Metamorphic Rock (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2
Gneiss (specifically a Granitic Gneiss specimen)
Gneiss (high-grade metamorphic rock primarily composed of Quartz, Feldspar, and Biotite/Amphibole)
Fuchsite
K(Al,Cr)2(AlSi3)O10(OH)2
Banded Gneiss
Gneiss (High-grade metamorphic rock typically composed of Quartz, Feldspar, and Mica)
Likely amphibolite
Amphibolite, composed chiefly of hornblende and plagioclase feldspar
Serpentinite
Serpentinite (composed primarily of minerals in the serpentine group: (Mg,Fe)3Si2O5(OH)4)
Conglomerate (Puddingstone)
Conglomerate (specifically, clastic sedimentary rock)
Sandstone (specifically Lithic or Quartz Arenite)
Arenite (composed primarily of SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
River Rock
Sedimentary clast
Jasper Conglomerate (Puddingstone)
Siliceous Conglomerate (Quartz and Jasper clasts in a fine-grained matrix)
Pyrite-rich Ore
Pyrite (FeS2) with secondary minerals