Quartzite (River Cobble)
SiO2 (Quartz-rich Metamorphic Rock)
metamorphic
Category
Sedimentary Or Metamorphic
Browse sedimentary or metamorphic specimens identified by the Rock Identifier community.
Anthracite Coal
Anthracite (Carbon-rich metamorphic coal)
metamorphic
Lapis Lazuli (Tumbled)
Lazurite-dominated contact metamorphic rock
metamorphic
Anthracite Coal
Anthracite (Carbon-rich metamorphic rock)
metamorphic
Anthracite
Anthracite (Carbon-rich metamorphic coal)
metamorphic
River Cobble (Quartzite with Iron Staining)
Metamorphic Quartzite (SiO2 with Fe2O3 inclusions)
metamorphic
Anthracite Coal
Anthracite (Carbon-rich metamorphic coal)
metamorphic
Lapis Lazuli
Lapis Lazuli (Complex metamorphic rock primarily containing Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
metamorphic
Epidote
Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
metamorphic
Red aventurine
Silicon Dioxide (SiO2) with Hematite or Goethite inclusions
metamorphic
Rhodonite Tumbled Chips
Manganese silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Ruby in Fuchsite
Cr-rich Muscovite (Fuchsite) with Corundum (Ruby)
metamorphic
Black Spinel
Magnesium Aluminum Oxide (MgAl2O4)
mineral
Blue Aventurine
Quartzite with Dumortierite inclusions (SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Garnet
Garnet Group (formula varies, e.g., Almasndine: Fe3Al2(SiO4)3)
mineral
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Metamorphic Rock (variety of Quartz)
Sandstone (Picture Sandstone)
Arenite (primarily SiO2)
sedimentary
Greenschist
Chlorite schist
metamorphic
Epidote (likely Pistacite in Epidosite rock)
Epidote: Ca2(Al,Fe)3(SiO4)3(OH)
metamorphic
Eclogite
Eclogite (Omphacite + Almandine-Pyrope Garnet)
metamorphic
Unakite (Epidotized Granite)
Epidotized Granite (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic
Zircon
Zircon (ZrSiO4)
Mineral
Quartz
Quartz (SiO2)
Mineral
Orange Calcite
Calcite (CaCO3)
Mineral
Clay Brick
Ceramic structural unit (Al2O3·2SiO2·2H2O as precursor)
metamorphic (man-made/anthropogenic)
Giallo Ornamental Granite
Phaneritic Igneous Rock (composed of Quartz, Feldspar, and Mica)
igneous
Quartzite
Quartzite (primarily SiO2)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartzite with Iron Inclusions
Quartzite (primarily SiO2)
metamorphic
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Green Aventurine (Tumbled Quartzite)
Silicon Dioxide (SiO2) with inclusions of Fuchsite
metamorphic
Red Jade (Dyed Quartzite)
Silicon Dioxide (SiO2) - variety Quartzite
metamorphic
Milky Quartz
Quartz / Silicon Dioxide (SiO2)
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic