Quartzite
Quartzite (mostly SiO2)
metamorphic
Category
Sedimentary Rock (Technically A Microcrystalline Quartz Mineral Aggregate)
Browse sedimentary rock (technically a microcrystalline quartz mineral aggregate) specimens identified by the Rock Identifier community.
Jasper
Quartz (SiO2) with impurities
sedimentary
Conglomerate
Conglomerate (Detrital sedimentary rock)
sedimentary
Red Sandstone
Ferruginous Sandstone (SiO2 dominated with Fe2O3 cement)
sedimentary
Quartzite Pebble (River Rock)
Quartzite (primarily SiO2)
metamorphic
Sandstone (Ferruginous)
Sandstone (mainly SiO2 with Fe2O3 staining)
sedimentary
Quartzite River Rock with Dendrites
Metamorphosed Quartz-rich Sandstone with Manganese Oxide (MnO2) inclusions
metamorphic
Dyed Chalcedony (Agate)
Silicon Dioxide (SiO2) with artificial pigment
mineral
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (SiO2 based with mineral cement)
sedimentary
Granite
Phaneritic Plutonic Igneous Rock
igneous
Tumbled Carnelian and Quartz Mix
Silicon Dioxide (SiO2) with iron oxide impurities
mineral
Green Aventurine and Clear Quartz
Green Aventurine (Silicon Dioxide - SiO2 with Fuchsite inclusions); Clear Quartz (Silicon Dioxide - SiO2)
Mineral
Sandstone (Quartzose Pebble)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Red Jasper
Jasper (Silicon Dioxide, SiO2 with Fe2O3 inclusions)
mineral
Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Carnelian
Carnelian (Silicon Dioxide: SiO2)
mineral
River Cobble (likely Quartzite)
Metamorphosed Sandstone (SiO2)
metamorphic
Red Sandstone
Clastic sedimentary rock (primarily Quartz and Feldspar with Iron Oxide cement)
sedimentary
Red Jasper (Chert)
Silicon Dioxide (SiO2)
sedimentary
Concrete
Anthropogenic Sedimentary Rock (Hydrated Calcium Silicate)
sedimentary (anthropogenic / man-made)
Sandstone
Arenite (SiO2 dominant)
sedimentary
Petrified Wood
Silicified wood (Quartz/Chalcedony)
Sedimentary
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Jasper (Iron-stained Chalcedony)
SiO2 with Fe2O3 (Iron Oxide) impurities
Sedimentary / Mineral (Silica)
Jasper with Quartz vein
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Quartz (specifically Milky/White Quartz)
Silicon Dioxide (SiO2)
mineral
Quartzite Pebble
Metamorphic Quartzite (SiO2)
metamorphic
Sandstone (likely Quartzose Sandstone)
Arenite
sedimentary
Diorite (River Pebble)
Diorite (Intermediate intrusive igneous rock)
igneous
Jasper (Iron-stained)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Carnelian Agate
Carnelian (Silicon Dioxide: SiO2)
mineral
Picture Jasper
Silicon Dioxide (SiO2) with iron oxide and clay impurities
sedimentary
River Rock (Glacial Cobbles)
Fluvial Alluvium (Mixed lithology including Quartzite, Basalt, and Granite)
Mixed (predominantly sedimentary and igneous)
Conglomerate
Conglomerate (Detrital Sedimentary Rock)
sedimentary
Yellow Quartzite
Quartzite (primarily Silicon Dioxide - SiO2)
metamorphic
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
sedimentary
Jasper (specifically Fancy or Polychrome Jasper)
Silicon Dioxide (SiO2) - Chalcedony
Sedimentary
Amethyst Geode
Silicon Dioxide with trace inclusions of Iron (SiO2)
mineral
Gneiss
High-grade metamorphic rock (Gneiss)
metamorphic
Quartz with Mica (Gneissic or Pegmatitic origin)
Silicon Dioxide (SiO2) with Phyllosilicates (KAl2(AlSi3O10)(F,OH)2)
metamorphic
Geode (Quartz chalcedony variety)
SiO2 (Silicon Dioxide)
sedimentary