Druzy Quartz on Matrix
Silicon Dioxide (SiO2)
mineral
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
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Epidote
Epidote Group (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
metamorphic
Gravel or Pebble
Clastic Sedimentary Grain (typically composed of Quartz or Silicate minerals)
sedimentary
Granite
Granite (Felsic Plutonic Rock)
igneous
Granite Pebble
Granite (composed mainly of Quartz, Feldspar, and Mica)
igneous
Quartz (Iron-Stained)
Silicon Dioxide (SiO2)
mineral
Veined Quartz
SiO2 (Silicon Dioxide)
Mineral
Banded Gneiss with Quartz Vein
Gneiss containing SiO2 (Quartz) intrusion
metamorphic
Epidote
Epidote (Ca2(Al, Fe)3(SiO4)3(OH))
metamorphic
Schist
Mica Schist
metamorphic
Azurite and Malachite on Matrix
Cu3(CO3)2(OH)2 (Azurite) and Cu2CO3(OH)2 (Malachite)
mineral
Granite
Granite (a common rock type, not a single mineral; composed primarily of Quartz, Feldspar (Orthoclase and Plagioclase), and Mica (Biotite and/or Muscovite) and/or Amphibole)
Igneous
Limonite (Ironstone Concretion)
Limonite: FeO(OH)·nH2O
sedimentary
Clear Quartz
Silicon dioxide (SiO2)
mineral
Quartz Crystal Point
Silicon Dioxide (SiO2)
mineral
Grey River Stone (Quartz-rich Quartzite/Siltstone)
Quartzite / Meta-siltstone (primarily SiO2)
Metamorphic (low-grade)
River Pebble (Quartzite/Siltstone mixture)
Silicon Dioxide (SiO2) mixture with varied clastic minerals
sedimentary/metamorphic
Granite
Granite (composed primarily of Quartz SiO2 and Feldspar (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8))
igneous
Banded Agate
Cryptocrystalline variety of Quartz (SiO2)
mineral
Fossiliferous Limestone (Coquina / Shell Conglomerate)
Bioclastic Limestone (composed primarily of CaCO3)
sedimentary
Milky Quartz (Quartz Vein)
Silicon Dioxide (SiO2)
mineral
Basalt Porphyry
Porphyritic Basalt
igneous
Gabbro
Gabbro (mafic intrusive igneous rock)
igneous
Amphibolite with Hornblende
Amphibole-rich Metamorphic Rock (Ca2(Mg,Fe)5Si8O22(OH)2)
metamorphic
Rhodonite
Manganese Silicate (MnSiO₃)
mineral
Quartz-Veined Mudstone
Argillaceous Mudstone with Quartz Veining
sedimentary
Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
mineral
Calcite
Calcite (Mineral, Calcium Carbonate - CaCO3)
Mineral
Granite
Granite (composed mainly of Quartz, Feldspar, and Mica)
igneous
Quartz
Silicon Dioxide (SiO2)
mineral
Gemstones (Emerald and Yellow Topaz or Citrine)
Beryl (Be3Al2Si6O18) and Quartz (SiO2) or Topaz (Al2SiO4(F,OH)2)
mineral
Green Aventurine
Silicon dioxide with Fuscite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
mineral
Lapis Lazuli
Lapis Lazuli (a rock composed primarily of Lazurite (Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2, with varying amounts of Calcite, Pyrite, and Sodalite).
Mineral
Basalt
Mafic Igneous Rock (composed primarily of Plagioclase and Pyroxene)
igneous
Granite Cobble
Granite (composed primarily of quartz, feldspar, and mica)
igneous
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Granitic Pegmatite
Pegmatitic Granite
igneous
Jade (Nephrite or Jadeite)
Nephrite: Ca2(Mg,Fe)5Si8O22(OH)2 (amphibole mineral); Jadeite: NaAlSi2O6 (pyroxene mineral)
Metamorphic Rock / Mineral
Pumice (Volcanic Rock)
Vesicular volcanic rock (composed largely of amorphous volcanic glass)
igneous
Garnet Schist
Almandine-Mica Schist
metamorphic
Greenschist
Chlorite schist
metamorphic
Vesicular Basalt (or Scoraceous Basalt)
Basalt (Vesicular texture)
igneous