Quartz Vein in Host Rock
Silicon Dioxide (SiO2) within metamorphic/igneous matrix
igneous/metamorphic
Category
Metamorphic Rock (Specifically A Rock Composed Of Minerals)
Browse metamorphic rock (specifically a rock composed of minerals) specimens identified by the Rock Identifier community.
Sandstone (with Iron Staining)
Clastic sedimentary rock (High Silica / Iron Oxide)
sedimentary
Banded Jasper (possibly "Picture Jasper")
Jasper (a microcrystalline variety of Quartz / Silicon Dioxide - SiO2)
Sedimentary rock (specifically a chemical sedimentary rock, or a chert if considered purely mineral aggregate)
Pink Granite
Phaneritic Felsic Igneous Rock (Granite)
igneous
Basalt
Basalt (composition: Plagioclase, Pyroxene, and Olivine)
igneous
Blue Quartzite
Quartzite (primarily SiO2 with inclusions)
metamorphic
Tree Agate
Silicon Dioxide (SiO2) with Chlorite inclusions
sedimentary
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Stromatolite
Laminated biogenic sedimentary structure (formed by Cyanobacteria)
sedimentary
Quartzite (Yellow/Orange variety)
Quartzite (primarily SiO2)
metamorphic
Granite (specifically Pink or Alkali Feldspar Granite)
Felsic Plutonic Rock (primarily SiO2 with KAlSi3O8)
igneous
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Pink Granite
Phaneritic Felsic Igneous Rock (Granite)
igneous
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Jasper (specifically Bloodstone/Heliotrope or Dark Green Jasper)
Cryptocrystalline Quartz (SiO2) with inclusions
sedimentary
Banded Slate or Siltstone with Quartz/Calcite Veins
Protolith-derived Siltstone or Slate (varies based on degree of metamorphism)
metamorphic
Pyrite (on Quartz/Host Rock)
Iron Sulfide (FeS₂)
mineral
Pink Granite (with Potassic Feldspar and Quartz)
Felsic Intrusive Igneous Rock (Granite)
igneous
Lapis Lazuli
Lapis Lazuli (A metamorphic rock primarily composed of Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, along with Calcite and Pyrite)
metamorphic
Granite
Granite (Felsic Plutonic Rock)
igneous
Fuchsite on Quartz
Muscovite (KAl2(AlSi3O10)(OH)2) with Chromium impurities
metamorphic
Ocean Jasper
Silicon Dioxide (SiO2) with various inclusions
Mineral (Variety of Quartz)
Biotite Mica
Biotite (K(Mg,Fe)3AlSi3O10(F,OH)2)
mineral
Gneiss (Schistose)
Gneiss
metamorphic
Granitic Quartz with Feldspar
Granite (composed primarily of SiO2 and KAlSi3O8)
igneous
Greenschist
Greenschist (composed of Chlorite, Actinolite, and Epidote)
metamorphic
Sandstone
Arenite (Sedimentary rock composed of sand-sized grains, primarily SiO2)
sedimentary
Gneiss
Gneiss
metamorphic
Granite (Weathered/Oxidized)
Phaneritic Felsic Igneous Rock (composed of Quartz, Orthoclase Feldspar, and Mica)
igneous
Pink Granite (River Pebble)
Phaneritic Felsic Igneous Rock
igneous
Gneiss (with Quartz and Biotite Mica)
Gneiss
metamorphic
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Dalmatian Stone
Dalmatian Jasper (Aphanitic Igneous Rock with Arfvedsonite inclusions)
igneous
Pink Granite
Phaneritic Felsic Igneous Rock
igneous
Slickenside
Tectonic Fault Scarp Surface
metamorphic
Serpentinite
Serpentinite (complex silicate minerals including Lizardite, Antigorite, and Chrysotile)
metamorphic
Slate
Slate (Regional metamorphic rock composed primarily of quartz, illite, and chlorite)
metamorphic
Basalt
Basalt (Mafic volcanic rock)
igneous
Chalcedony (Agate/Carnelian)
Cryptocrystalline Silicon Dioxide (SiO2)
mineral
Andesite
Andesite (Intermediate Extrusive Volcanic Rock)
igneous
Quartz / Chert
Silicon Dioxide (SiO2)
Mineral / Sedimentary
Schist
Mica Schist (primarily Muscovite and Quartz)
metamorphic