Quartz Pebble
Crystalline Silica (SiO2)
Category
Browse sedimentary and metamorphic specimens identified by the Rock Identifier community.
Quartz Pebble
Crystalline Silica (SiO2)
Granite Gneiss
Gneiss (High-grade Metamorphic Rock)
Gneiss
Gneiss (High-grade metamorphic rock)
Likely calcite-rich limestone or marble
Calcite (CaCO₃); possibly recrystallized limestone (marble)
Gneiss
Gneiss
Quartzite
Quartzite (SiO2)
Gneiss
Gneiss
Gneiss
Gneiss (Metamorphic rock dominated by Quartz, Feldspar, and various dark minerals)
Gneiss
Gneiss
Gneiss
Gneiss
Mica Schist
Mica Schist (primarily Muscovite and/or Biotite composition)
Gneiss
Gneiss
Banded Slate (Lithified Mudstone)
Low-grade Metamorphosed Mudstone / Slate
Gneiss
Gneiss
Mica Schist
Mica Schist
Banded Gneiss
Gneiss
Diamond Drill Core (Greenschist and Quartzite)
Chlorite Schist / Meta-quartzite (Metamorphic Rock Core Sample)
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
Garnet-Bearing Gneiss
Almandine-Garnet Gneiss
Gneiss (specifically a weathered Amphibolite or Garnet Gneiss)
Gneiss (complex silicate composition)
Green Aventurine
Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)
Pink Quartz / Quartzite
Silicon Dioxide (SiO2)
Yellow Quartzite (River Pebble)
Quartzite (primarily SiO2)
Petrified Wood
Silicified wood (primarily SiO2 - Silicon Dioxide/Quartz)
Quartzite
Quartzite (SiO2)
Quartzite
Metamorphosed Quartz Sandstone (SiO2)
Quartzite River Stone
Quartzite (primarily SiO2)
Quartzite
Quartzite (Silicon Dioxide, SiO2)
Tumbled pale green calcite
Calcite (CaCO₃)
Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Milky Quartz
Silicon dioxide (SiO2)
Aura Quartz Bead
Silicon dioxide (SiO2) with metal coating
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Milky Quartz
Silicon Dioxide (SiO2)
Calcite
Calcium Carbonate (CaCO3)
Milky Quartz
Silicon Dioxide (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Blue Calcite
Calcium Carbonate (CaCO3)
Clear Quartz
Silicon Dioxide (SiO2)