Quartz (likely) / Siliceous rock with quartz phenocrysts (if a rock fragment)
Quartz (SiO₂)
Mineral
Category
Mineral In Metamorphic Rock
Browse mineral in metamorphic rock specimens identified by the Rock Identifier community.
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Goldstone (blue-goldstone–style glass) beads
Artificial aventurine glass, typically silica glass with copper inclusions; not a natural mineral
mineral
Schist
Mica Schist
metamorphic
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Tumbled milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Clear Quartz (or Rock Crystal)
Quartz (SiO₂)
Mineral
Granitoid (Granite/Gneiss mix)
Granite or Granitic Gneiss (Silicon dioxide SiO2 with Al, K, Na silicates)
igneous/metamorphic
Mica Schist
Muscovite/Biotite Schist
metamorphic
Gneiss
Gneiss
metamorphic
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Petrified Wood
Silicified wood (primarily Silicon Dioxide, SiO2)
metamorphic
Green Tourmaline
Elbaite (Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH))
mineral
Yellow Quartz (Citrine or Iron-stained Quartz)
Silicon Dioxide (SiO2)
mineral
Green Aventurine
Quartz variety (SiO2 with inclusions)
mineral
White Jade / White Chalcedony
Nephrite Jade (Ca2(Mg,Fe)5Si8O22(OH)2) or Chalcedony (SiO2)
Mineral
Agate
Silicon dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Greenstone
Greenschist (metamorphosed mafic igneous rock)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Orbicular jasper / brecciated jasper slab
Silicified volcanic rock composed mainly of microcrystalline quartz (SiO₂), with iron-oxide and possible chalcedony/agate bands
metamorphic
Orthoclase Feldspar
Potassium Feldspar (KAlSi3O8)
mineral
Quartz pebble
Silicon dioxide (SiO2)
mineral
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals: (Mg,Fe)3Si2O5(OH)4)
metamorphic
Rough Emerald/Green Beryl
Beryl (Be3Al2(SiO3)6) with trace amounts of Chromium or Vanadium
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Greenstone / Greenschist
Greenschist (composed of Chlorite, Epidote, and Actinolite)
metamorphic
Granitic Gneiss
Gneiss (Metamorphic rock predominantly containing quartz, K-feldspar, and plagioclase)
metamorphic
Likely weathered quartz-bearing rock fragment
Indeterminate; appears to contain quartz (SiO₂) with iron-oxide staining, possibly from quartzite, granite, or pegmatite
mineral
Schist
Mica Schist (Group of medium-grade metamorphic rocks)
metamorphic
Gneiss
Gneiss
metamorphic
Blue Quartzite
Metamorphosed Quartz (SiO2) with inclusions
metamorphic
Pyrite
Iron Sulfide (FeS2)
mineral
Gneiss (Metamorphosed Pebble)
Gneiss with Quartz/Feldspar banding
metamorphic
Gneiss
Gneiss
metamorphic
Gneiss
High-grade Metamorphic Gneiss
metamorphic
White Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Green Aventurine
Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Greenstone
Metabasalt / Greenschist facies rock
metamorphic
Gold Ore in Matrix
Native Gold (Au) in Quartz/Host Rock
mineral
Granitic Pegmatite Intrusion in Host Rock
Pegmatite dike in amphibolite or schist
igneous and metamorphic
Quartzite with Iron Oxide Vein
Metamorphic Quartzite (SiO2 with Hematite/Limonite impurities)
metamorphic