Gneiss
Gneiss
metamorphic
Category
Metamorphic Rock (Composed Of Multiple Minerals)
Browse metamorphic rock (composed of multiple minerals) specimens identified by the Rock Identifier community.
Learn about Metamorphic Rock (Composed Of Multiple Minerals) in the encyclopedia
View all →
Garnet Schist
Garnetiferous Mica Schist
metamorphic
Green Aventurine
Silicon Dioxide (Quartz) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Granite
Granite
Igneous
Gneiss (River Cobble)
Metamorphic Gneiss
metamorphic
Orange Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Basalt with Weathering Rind
Basalt (Mafic volcanic rock)
igneous
Goethite
Goethite (FeO(OH))
mineral
Corundum
Corundum (Al2O3)
Mineral
Ironstone Concretion (Moqui Marble variety)
Ferruginous Sandstone Concretion
sedimentary
African Turquoise
African Turquoise (a trade name for Jasper, a variety of Chalcedony: SiO2)
sedimentary
Sandstone (Ferruginous)
Arenite with Iron oxide staining (SiO2 with Fe2O3)
sedimentary
White Chalcedony (likely Common Opal or Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Ironstone Concretion (Moqui Marble type)
Ironstone Concretion (Fe2O3 with SiO2 core)
sedimentary
Quartz with Iron Oxide Monzonite or Sandstone contact
Quartz (SiO2) with Limonite/Hematite staining
mineral
Mica Schist
Mica Schist (with Muscovite)
metamorphic
Common Marble
Calcium Carbonate (CaCO3)
metamorphic
Aventurine
Quartz containing inclusions of Fuchsite (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
metamorphic
Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
metamorphic
Diorite
Plutonic Igneous Rock (NaAlSi3O8, CaAl2Si2O8)
igneous
Dyed Agate
Silicon Dioxide (SiO2) with artificial pigment
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz Pebble (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Chrysocolla in Matrix
Hydrated copper phyllosilicate (Cu,Al)2H2Si2O5(OH)4' nH2O on Quartz/Feldspar matrix
mineral
Epidote
Epidote (Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic
Healer's Gold (Pyrite and Magnetite in Schist)
Magnetite (Fe3O4) and Pyrite (FeS2) in Mica Schist
metamorphic
Quartzite with Mica
Metamorphic Quartzite (SiO2 + Mica phyllosilicates)
metamorphic
Slate
Slate
metamorphic
Quartzite with Hematite staining
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Quartz (Milky and Bull Quartz)
Silicon Dioxide (SiO2)
mineral
Granite
Granite (compositional mixture of Quartz, Feldspar, and Mica)
igneous
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Greenstone
Chlorite schist or metabasalt depending on specific composition
Metamorphic
Jasper (Yellow Jasper)
Silicon Dioxide (SiO2) with iron inclusions
sedimentary
Diamond
Diamond (C)
mineral
Clear Quartz
Crystalline Silicon Dioxide (SiO2)
mineral
Natural Pearl
Calcium carbonate (primarily Aragonite and Conchiolin), CaCO3
mineral
Basalt with Amygdules
Amygdaloidal Basalt
igneous
Tiger's Eye (specifically Blue/Golden mixed or Hawk's Eye)
Pseudomorph of Quartz after Crocidolite (SiO2)
metamorphic
Serpentine (variety: Serpentine Rock)
Antigorite, Lizardite, or Chrysotile; formula generally (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4
metamorphic
Quartz Vein on Matrix
Silicon Dioxide (SiO2)
mineral