Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Category
Metamorphic Rock
Browse metamorphic rock specimens identified by the Rock Identifier community.
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Amethyst
SiO2 (Silicon Dioxide)
Mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Staurolite
Staurolite (Fe2+2Al9Si4O23(OH))
metamorphic
Rhodonite
Manganese silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Pink Garnet in Matrix
Grossular or Almandine Garnet (X3Y2(SiO4)3)
metamorphic
Epidote
Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
mineral
Nephrite Jade
Nephrite
Mineral/Rock
Labradorite
Labradorite (a variety of Plagioclase Feldspar), Na(AlSi3O8) to Ca(Al2Si2O8)
Mineral
Granite
Granite (a felsic intrusive igneous rock)
Igneous
Jasper and Quartzite Pebble
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary/metamorphic
Shale or Mudstone (Based on appearance)
Shale (fine-grained, laminated fissile sedimentary rock) / Mudstone (fine-grained, non-fissile sedimentary rock)
Sedimentary
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
Mineral
Blue Lace Agate
Chalcedony (a form of Quartz) - SiO2
Mineral
Epidote
Epidote - Ca2(Al,Fe)3(SiO4)3(OH)
metamorphic
Blue Apatite
Apatite (Group), Ca5(PO4)3(F,Cl,OH)
mineral
Quartz
Silicon Dioxide (SiO₂)
Mineral
Rhodonite
Rhodonite (Mn,Fe,Mg,Ca)SiO3
mineral
Garnet in Matrix
Almandine Garnet (Fe3Al2(SiO4)3)
metamorphic
Biotite on Quartz
Biotite (K(Mg,Fe)3AlSi3O10(F,OH)2) and Quartz (SiO2)
mineral
Dendritic Agate
Silicon Dioxide with Manganese or Iron Oxide inclusions (SiO2 + Mn/Fe)
mineral
Pyrite Cubes in Matrix
Iron Disulfide (FeS2) in Host Matrix
mineral side rock
Biotite or Phlogopite Mica
K(Mg,Fe)3(AlSi3O10)(F,OH)2
mineral
Pyrite
Pyrite (Iron Disulfide), FeS2
Mineral
Kyanite
Kyanite (Al2SiO5)
mineral
Green Aventurine and Clear Quartz
Green Aventurine (Silicon Dioxide - SiO2 with Fuchsite inclusions); Clear Quartz (Silicon Dioxide - SiO2)
Mineral
Rutilated Quartz
Quartz (SiO2) with Rutile (TiO2) inclusions
Mineral
Aventurine
Aventurine Quartz (SiO2 with inclusions)
Mineral
Slickenside in Limestone
Tectonized Limestone / Calcite (CaCO3)
metamorphic (localized) or sedimentary
Sodalite
Sodalite (Na4Al3Si3O12Cl)
Mineral
Basalt (River Rock)
Basalt
igneous
Quartz (likely a weathered/tumbled piece)
Quartz (SiO₂)
Mineral
Greenstone / Epidosite
Epidosite (Metasomatic rock consisting mainly of Epidite Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH) and Quartz)
metamorphic
Green Aventurine (likely)
Silicon dioxide (SiO2) with fuchsitemica inclusions
Mineral (specifically a variety of Quartz)
Green Aventurine
Quartz with Fuchsine inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Blue Apatite
Calcium Fluorophosphate - Ca5(PO4)3F
mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Seraphinite (Clinochlore)
Clinochlore (Mg,Fe2+)5Al(Si3Al)O10(OH)8
mineral
Rhodonite
Manganese silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic