Quartzite River Cobble
Quartzite (primarily SiO2)
metamorphic
Category
Metamorphic Rock (Variety Of Quartz)
Browse metamorphic rock (variety of quartz) specimens identified by the Rock Identifier community.
Quartzite
Quartzite (primarily SiO2)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Chert (Tan/Yellow variety)
Microcrystalline or cryptocrystalline Quartz (SiO2)
sedimentary
Druzy Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Blue Banded Agate (Dyed)
Silicon Dioxide (SiO2) - Variety of Chalcedony
mineral
Rose Quartz
Rose Quartz (SiO2)
Mineral
Pebble (likely Quartzite or Chert)
Clastic Sediment, potentially composed of SiO₂ (Quartz)
Mineral, Sediment
Blue Apatite
Apatite - Ca5(PO4)3(F,Cl,OH) (Calcium phosphate with Fluorine, Chlorine, or Hydroxyl)
mineral
Moss Agate and Druzy Quartz Carving
Cryptocrystalline Silica (SiO2) with impurities
mineral
Strawberry Quartz
Quartz (SiO₂) with Goethite (α-FeO(OH)) and/or Lepidocrocite (γ-FeO(OH)) inclusions
Mineral
Gneiss (specifically a Banded Gneiss cobble)
Gneiss (composed mainly of Quartz, Feldspar, and Biotite/Amphibole)
metamorphic
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite (mica)
Mineral (variety of Quartz)
Yellow Quartzite (River Cobble)
Quartzite (mainly SiO2)
metamorphic
Ferruginous Sandstone
Arenite with Hematite/Limonite cement (SiO2 + Fe2O3)
sedimentary
Blue Sapphire
Corundum (Al2O3)
mineral
Gneiss (with Quartz and Biotite Mica)
Gneiss
metamorphic
Yellow Jasper
Chalcedony (Silicon Dioxide, SiO2)
sedimentary (microcrystalline quartz)
Red Sandstone
Sandstone (mainly SiO2 with Iron Oxide cement)
sedimentary
Quartz
Silicon Dioxide (SiO₂)
Mineral
Red Quartzite (River Pebble)
Quartzite (primarily Silicon Dioxide - SiO2)
metamorphic
Yellow Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Jasper with Quartz inclusion
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite (Beach Pebble)
Quartzite (composed primarily of SiO2)
metamorphic
Rose Quartz
Quartz (SiO2) with trace elements of titanium, iron, or manganese
mineral
Yellow Aventurine
Quartzite with inclusions (SiO2)
metamorphic
Gneiss (with Quartz-Feldspar vein)
Gneiss (high-grade metamorphic rock) containing Quartz (SiO2) and Feldspar (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8)
metamorphic
Strawberry Quartz
Silicon Dioxide (SiO2) with inclusions of Goethite or Hematite
Mineral
Chalcedony
Silicon dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Gossan (Iron Hat) with Quartz and Chlorite
Limonite/Goethite-rich Gossan (FeO(OH)·nH2O) with inclusions of Quartz and Chlorite
Mineral/Metamorphic Substrate
Granite
Granite (Felsic Plutonic Rock)
igneous
Granodiorite
Granodiorite (Phaneritic intrusive igneous rock containing Plagioclase, Quartz, and Biotite/Amphibole)
igneous
Pink Quartzite
Quartzite (primarily SiO2)
metamorphic
Sandstone (Quartzose Sandstone Pebble)
Arenite (primarily SiO2)
sedimentary
Sandstone
Clastic sedimentary rock (primarily Quartz and Feldspar)
sedimentary
Mica Schist
Mica Schist (Main mineral constituents: Muscovite/Biotite, Quartz, Feldspar)
metamorphic
Riverstone Quartzite
Quartzite (primarily SiO2)
metamorphic
Schist
Crystalline Schist (often containing Muscovite, Biotte, or Quartz)
metamorphic
Sandstone
Clastic Sedimentary Rock (composed primarily of Quartz, SiO2)
sedimentary
Orthoclase Feldspar (or K-Feldspar)
Orthoclase (KAlSi3O8)
Mineral
Quartz (Drusy/Crystalline variety)
Silicon Dioxide (SiO2)
mineral