Quartzite
Quartzite (SiO2)
metamorphic
Category
Sedimentary Rock (Possibly A Conglomerate Or Coarse Grained Sandstone)
Browse sedimentary rock (possibly a conglomerate or coarse grained sandstone) specimens identified by the Rock Identifier community.
Green Sandstone
Glauconitic Sandstone
sedimentary
Yellow Quartzite (River Pebble)
Quartzite (primarily SiO2 with iron oxide inclusions)
metamorphic
Diorite
Phaneritic Intrusive Igneous Rock (composed of Plagioclase feldspar, Hornblende, and Biotite)
igneous
Quartzite pebble
Quartzite (SiO2)
metamorphic
Granite Cobble
Felsic intrusive igneous rock (composition: SiO₂ with KAlSi₃O₈, NaAlSi₃O₈, and CaAl₂Si₂O₈)
igneous
Fossilized Turritella Gastropod (Internal Mold)
Turritella (Fossil Gastropod Crust)
sedimentary
Yellow Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Yellow Quartzite (River Pebble)
Quartzite (primarily Silicon Dioxide, SiO2)
metamorphic
Hag Stone
Perforated Sedimentary Rock (typically Limestone or Sandstone)
sedimentary
Granite
Phaneritic Intrusive Igneous Rock (composed primarily of Quartz, Feldspar, and Mica)
igneous
Piddock bored rock (likely Mudstone or Shale)
Ichnofossil (Gastrochaenolites borings) in Fine-grained Sedimentary Rock
sedimentary
Quartz Vein in Host Rock (clastic sediment)
Silicon Dioxide (SiO2) in matrix
sedimentary
Quartzite
Quartzite (SiO2)
metamorphic
Yellow Quartzite
Quartzite (SiO2)
metamorphic
Feldspathic Granite (likely Syenite or Granite Pegmatite)
Phaneritic Acidic Igneous Rock (KAlSi3O8 dominant with SiO2)
igneous
Quartzite
Quartzite (primarily Silicon Dioxide, SiO2)
metamorphic
Quartzite with Iron Inclusions
Quartzite (primarily SiO2)
metamorphic
Yellow Quartzite
Quartzite (primarily SiO2)
metamorphic
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide mixture)
mineral
Quartzite River Rock
Quartzite (SiO2)
metamorphic
Chalcedony (Commonly known as Carnelian or Agate pebble)
Microcrystalline Quartz (SiO2)
mineral
Hag Stone
Perforated Sandstone (composed of SiO2 and calcareous cement)
sedimentary
Granite Pebble
Intrusive Felsic Igneous Rock (primarily SiO2 with Al2O3, K2O, Na2O)
igneous
Quartzite (Ferruginous)
Quartzite (major component SiO2 with Fe2O3 impurities)
metamorphic
Quartzite (Iron-stained)
Quartzite (SiO2)
metamorphic
Yellow Quartzite (River Pebble)
Quartzite (primarily SiO2)
metamorphic
Granite (specifically Pink or Alkali Feldspar Granite)
Felsic Plutonic Rock (primarily SiO2 with KAlSi3O8)
igneous
Diorite (Salt and Pepper Rock)
Phaneritic Plutonic Diorite; chemical composition roughly 52-63% silica (SiO2)
igneous
Yellow Quartzite (Tumbled)
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (primarily SiO2)
Metamorphic
River Rock (Basalt/Greywacke pebbles)
Fluvial gravel primarily composed of Mafic Volcanic Rock (Basalt) or Lithic Sandstone (Greywacke)
igneous and sedimentary
Yellow Quartzite
Quartzite (primarily SiO2)
metamorphic
Granite (Alkali-feldspar rich)
Phaneritic Felsic Igneous Rock (Major components: KAlSi3O8, SiO2)
igneous
Quartzite
Quartzite (SiO2)
metamorphic
Desert Rose
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
Quartzite (River Cobble)
Metamorphic Rock (composed predominantly of SiO2)
metamorphic
Granite
Granite (phaneritic intrusive igneous rock consisting of 20-60% quartz, orthoclase/plagioclase feldspar, and mica/amphibole)
igneous
Pink Quartzite
Quartzite (SiO2)
metamorphic
Pink Quartzite (Water-worn)
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Micaceous Sandstone or Quartzite
Sandstone (lithified quartz grains, often with mica) or Quartzite (metamorphosed sandstone)
Sedimentary or Metamorphic