Quartz in Matrix
Silicon Dioxide (SiO2)
Category
Browse igneous, sedimentary, and metamorphic specimens identified by the Rock Identifier community.
Quartz in Matrix
Silicon Dioxide (SiO2)
Peacock Ore (Chalcopyrite)
Chalcopyrite (CuFeS2)
Yellow Calcite
Calcite (Calcium Carbonate, CaCO3)
Hematite
Iron(III) oxide (Fe2O3)
Blue Calcite
Calcite (CaCO3)
Clear Quartz Crystal
Quartz (Silicon Dioxide - SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz with Mica inclusions (likely Schist or Gneiss host)
Silicon Dioxide (SiO2) with Phyllosilicates (KAl2(AlSi3O10)(OH)2)
Sand (Construction Grade)
Unconsolidated siliciclastic sediment (primarily SiO2)
Gneiss
Gneissic Metamorphic Rock
Graphite
Graphite (Chemical Formula: C)
Gneiss
High-grade metamorphic rock (Gneiss)
Banded Gneiss
Gneiss (complex metamorphic silicate rock)
Gneiss (specifically a water-worn pebble)
Gneiss
Gneiss
Gneiss
Gneiss
Gneiss
Epidote
Epidote (Ca2(Al,Fe)3(SiO4)3(OH))
Almandine Garnet
Almandine [Fe3Al2(SiO4)3]
Gneiss (Banded Gneiss)
Gneiss
Grey River Stone (Gneiss/Schist mix)
Foliated Metamorphic Rock (variable mineral formula)
Healer's Gold (Pyrite and Magnetite in Schist)
Magnetite (Fe3O4) and Pyrite (FeS2) in Mica Schist
Gneiss
Gneiss
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
Gneiss
Gneiss (High-grade metamorphic rock)
Schist
Mica Schist
Gneiss
Gneissic Metamorphic Rock
Banded Gneiss
Gneiss (Metamorphic Rock)
Quartz (Milky Quartz / Quartzite)
Silicon Dioxide (SiO2)
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
Pyrite
Iron Sulfide (FeS2)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Clear Quartz Crystal
Silicon Dioxide (SiO2)
Garnet (Almandine/Pyrope variety)
Silicate mineral group; typically Fe3Al2(SiO4)3 (Almandine) or Mg3Al2(SiO4)3 (Pyrope)
Pyrite
Iron Disulfide (FeS2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Pyrite
Iron Sulfide (FeS2)
Pyrite
Iron Sulfide (FeS2)
Quartz
Silicon Dioxide (SiO2)
Hematite
Iron(III) oxide (Fe2O3)
Quartz (Grain/Fragment)
Silicon Dioxide (SiO2)