Gneiss (with Mica and Quartz)
Gneissic Metamorphic Rock
metamorphic
Category
Metamorphic Or Igneous
Browse metamorphic or igneous specimens identified by the Rock Identifier community.
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Epidote in Matrix
Epidote; Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Epidote
Epidote (Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic
Greenschist
Greenschist (Chlorite Schist)
metamorphic
Greenschist (Greenstone)
Greenschist (Metamorphic rock containing chlorite, actinolite, and epidote)
metamorphic
Garnet
Garnet group (X3Y2(SiO4)3)
mineral
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Garnet (Almandine variety)
Almandine Garnet (Fe3Al2(SiO4)3)
mineral
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Potassium Feldspar
K-Feldspar (KAlSi3O8)
mineral
Magnetite / Iron Ore
Magnetite (Fe3O4)
mineral
Quartz / Quartzite
Silicon Dioxide (SiO2)
mineral / metamorphic
Arsenopyrite in Quartz/Host Rock
Arsenopyrite (FeAsS)
mineral
Moonstone
Orthoclase (KAlSi3O8) with Albite (NaAlSi3O8)
mineral
Labradorite
(Ca, Na)(Al, Si)4O8
mineral
Citrine
SiO2 (Silicon Dioxide)
mineral
Sunstone (Feldspar)
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
mineral
Schorl (Black Tourmaline)
NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Green Aventurine
Silicon Dioxide (Quartz with Fuchsite inclusions) - SiO2
mineral
Cream Quartz Bead
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Strawberry Quartz
Silicon Dioxide (SiO2) with Hematite/Goethite inclusions
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Sapphire (Rough)
Corundum (Al2O3)
mineral
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Hematite (likely Botryoidal or Specularite variant)
Iron(III) oxide (Fe2O3)
mineral
Quartz with Schorl inclusions
Silicon Dioxide (SiO2) with Sodium Iron Aluminum Borosilicate Hydroxide (Black Tourmaline)
mineral
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Feldspar (specifically Orthoclase)
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Moonstone
Orthoclase Feldspar (KAlSi3O8) with inclusions of Albite
mineral
Citrine Quartz
Citrine (Silicon Dioxide, SiO2)
mineral
Red Garnet (Pyrope or Almandine)
Garnet Group (A3B2(SiO4)3)
mineral
Sunstone
Oligoclase (Plagioclase Feldspar subclass), (Ca,Na)(Al,Si)4O8
mineral
Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Citrine
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Strawberry Quartz
Silicon Dioxide (SiO2) with Hematite or Goethite inclusions
mineral