Quartz on Host Rock
Silicon Dioxide (SiO2)
mineral
Category
Metamorphic (Pseudo Igneous)
Browse metamorphic (pseudo igneous) specimens identified by the Rock Identifier community.
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Orthoclase Feldspar
Orthoclase (KAlSi3O8)
mineral
Quartz (Milky/Crystalline fragment)
Silicon Dioxide (SiO2)
mineral
Pyrite in Quartz
Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO₂)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Druze on Matrix
Silicon Dioxide (SiO2)
mineral
Prehnite
Prehnite - Ca2Al(AlSi3O10)(OH)2
mineral
Cloudy Quartz / Quartz Tumble
Silicon Dioxide (SiO2)
mineral
White Quartz Pebble
Silicon Dioxide (SiO2)
mineral
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Blue Quartz
Silicon Dioxide (SiO2) with inclusions
mineral
Quartz (Citrine variety)
Silicon Dioxide (SiO2)
mineral
Quartz Pebble (Grit)
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Amethyst (Quartz variety)
Silicon Dioxide (SiO2)
mineral
Quartz (Small Pebble)
Silicon Dioxide (SiO2)
mineral
Moonstone (Orthoclase Feldspar)
Orthoclase (KAlSi3O8) with Albite (NaAlSi3O8)
mineral
Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Garnet (likely Almandine or Pyrope)
Garnet Group (Fe3Al2Si3O12 or Mg3Al2Si3O12)
mineral
Quartz
Silicon dioxide (SiO2)
Mineral
Quartz / Quartz Cluster
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz Crystal
Quartz (Silicon Dioxide - SiO2)
mineral
Gravel Pebble (Likely Quartzite or Basalt)
Quartzite (or Macrocrystalline Quartz)
metamorphic
Painted River Rock (likely Quartzite or Granite)
Quartzite or Granitic Gneiss (painted)
metamorphic
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)3(Si, Al, Fe)2O5(OH)4
metamorphic
Greenstone / Greenschist
Greenschist (composed of chlorite, epidote, and actinolite)
metamorphic
Greenstone
Greenschist
metamorphic
Gneiss
Gneiss
metamorphic
Biotite Schist
Biotite Gneiss/Schist (approximate formula K(Mg,Fe)3AlSi3O10(OH)2)
metamorphic
Gneiss
Gneiss
metamorphic
Marble
Metamorphosed Limestone (mainly CaCO3)
metamorphic
Pyritic Gneiss
Metamorphic Gneiss with Pyrite inclusions
metamorphic
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Rutilated Quartz
Quartz (SiO2) with Rutile (TiO2) inclusions
Mineral
Nuummite
Nuummite (Orthoamphibole rock composed of Anthophyllite and Gedrite, (Mg,Fe)7Si8O22(OH)2)
metamorphic
Greenschist
Greenschist (Chlorite-Albite-Epidote Schist)
metamorphic
Greenstone (Epidosite)
Epidosite (Metamorphosed Basalt/Diabase)
metamorphic
Greenstone (Epidote/Chlorite Rich Rock)
Metabasalt (often contains Epidote Ca2Al2(Fe3+;Al)(SiO4)(Si2O7)O(OH))
metamorphic
Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic