Tumbled Slate or Basalt Pebble
Metamorphic fine-grained rock / Slate or Phyllite
Category
Browse mineral in metamorphic rock specimens identified by the Rock Identifier community.
Tumbled Slate or Basalt Pebble
Metamorphic fine-grained rock / Slate or Phyllite
Quartzite (with inclusions)
SiO2 (Silicon Dioxide) rich Metamorphic Rock
Beach Pebble (Gray Quartzite / Fine-Grained Metasediment)
Quartzite (SiO2-dominated rock) / Metamorphic Sandstone
Quartzite Pebble
Metamorphic rock predominantly composed of Quartz (SiO2)
Quartzite Pebble
Metamorphic Rock (mainly Silicon Dioxide, SiO2)
Quartzite Pebble
Metamorphic rock primarily composed of Quartz (SiO2)
Quartzite
Metamorphic rock consisting largely of Quartz (SiO2)
Quartzite
Metamorphic rock primarily composed of Quartz (SiO2)
Gneiss (Gneissic Granite Pebble)
Metamorphic rock rich in Quartz, Feldspar, and Mica
Unakite / Epidotized Granite
Metamorphic Granite (Epidote-Orthoclase-Quartz Rock)
Quartzite Pebble
Metamorphic Rock (chiefly Silicon Dioxide, SiO2)
Quartzite (River Pebble)
Metamorphic rock consisting primarily of Quartz (SiO2)
Quartzite
Metamorphic rock primarily composed of Quartz (SiO2)
Lapis Lazuli
Lazurite-rich metamorphic rock (complex silicate)
Quartzite
Metamorphic rock primarily composed of Quartz (SiO2)
Quartzite Pebble
Metamorphic rock predominantly composed of Quartz (SiO2)
Gneiss (Metamorphic Cobble)
Gneiss (High-grade Regional Metamorphic Rock)
Anthracite Coal
Anthracite (Carbon-rich Sedimentary-to-Metamorphic Rock)
Quartzite
Metamorphic Quartzite (SiO2)
Quartzite Pebble
Metamorphic Quartzite (SiO2)
Green Aventurine
Silicon Dioxide with Fuchsite (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
Epidote in Matrix (Unakite-related)
Epidosite (Ca2(Al,Fe)3(SiO4)3(OH))
Pyrite-bearing schist (likely mica schist)
Muscovite–quartz schist with disseminated pyrite (FeS₂)
Garnet
Garnet group: X3Y2(SiO4)3 (commonly Almandine-Pyrope series)
Dumortierite Quartz
Al7BO3(SiO4)3O3 (Aluminum borate silicate)
Shatter Cone (Impactite)
Shock-metamorphosed rock
Quartz (specifically Clear Quartz or Rock Crystal)
Silicon Dioxide (SiO2)
Rhodonite
Rhodonite (Manganese Silicate), chemical formula: (Mn,Fe,Mg,Ca)SiO3
Quartzite
Metamorphosed Quartz Sandstone (primarily SiO2)
Yellow Quartzite Pebble
Quartzite (SiO2)
Pink Quartzite
Quartzite (SiO2) with trace Iron Oxides
Quartzite
Quartzite (SiO2)
Quartzite
Quartzite (SiO2)
Quartz / Quartzite
Quartzite (primarily Silicon Dioxide, SiO2)
Lapis Lazuli
Lapis lazuli (complex rock composed of Lazurite, Calcite, and Pyrite)
Quartzite
Quartzite (primarily SiO2)
Quartzite
Quartzite (primarily SiO2)
Quartzite
Quartzite (SiO2)
Quartzite
Metamorphosed Quartz Sandstone (SiO2)
Dendritic Agate or Spotted Quartzite
Silicon Dioxide (SiO2) with inclusions
Quartzite
Quartzite (SiO2)
Basalt Pebble
Extrusive Igneous Rock