Pyrite in Host Rock
Iron Disulfide (FeS2)
Category
Browse metamorphic rock (variety of quartz) specimens identified by the Rock Identifier community.
Pyrite in Host Rock
Iron Disulfide (FeS2)
Unakite
Unakite (Epidotized Granite)
Quartz (specifically Clear Quartz or Rock Crystal)
Silicon Dioxide (SiO2)
Gneiss
Gneiss (High-grade Metamorphic Rock)
Quartzite (River Stone)
Quartzite
Smoky Quartz
Silicon Dioxide (SiO2)
Quartzite (River Pebble)
Metamorphosed Quartz Sandstone (SiO2)
Wishing Stone (Gneiss or Basalt with Quartz Vein)
Gneiss or Metabasalt (with a Quartz or Calcite intrusion)
Quartzite
Quartzite (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
Quartzite Geode or Crystalline Quartz Node
Silicon Dioxide (SiO2)
Tiger's Eye
SiO2 (Quartz with inclusion of iron oxides)
Quartzite Pebble
Quartzite (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
Quartz with Schorl (Black Tourmaline)
Silicon Dioxide (SiO2) with Sodium Iron Aluminum Borosilicate (NaFe3Al6(BO3)3Si6O18(OH)4)
Clear Quartz
Silicon Dioxide (SiO2)
Quartzite Pebble
Metamorphic rock predominantly composed of Quartz (SiO2)
Unakite
Epidotized Granite
Granite Gneiss
Gneiss (High-grade Metamorphic Rock)
Banded Quartzite
Quartzite (SiO2 with impurities)
Banded Gneiss with Quartz Vein
Foliated Metamorphic Rock (Gneiss)
Quartzite
Metamorphosed Quartz Sandstone
Jasper Pendant
Chalcedony (Quartz) - SiO2
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Blue Quartz
Silicon Dioxide (SiO2) with inclusions
Geode (Unopened)
Siliceous Septarian Concretion / Geode (SiO2)
Quartzite
Quartzite (SiO2)
Quartzite
Metamorphosed Quartz Sandstone
Jasper with Quartz Veining
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Quartzite (River Pebble)
Quartzite (composed primarily of Silica, SiO2)
Jasper
Jasper (Cryptocrystalline Quartz; SiO2)
Chert (Quartz Variety)
Silicon Dioxide (SiO2)
Clear Quartz (beads in a bracelet)
Quartz (SiO2)
Granodiorite
Granodiorite (Intermediate to Felsic Intrusive Rock)
Quartz (Druzy) on Matrix
Silicon Dioxide (SiO2)
Quartzite
Quartzite (SiO2)
Unakite
Unakite (altered granitic rock)
Quartz Pebble
Silicon Dioxide (SiO2)
Chert (specifically Pink/Tan Chert)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
River Pebble (Likely Quartzite or Chert)
Quartzite (primarily SiO2)
River Cobble (Quartzite)
Meta-orthoquartzite
Yellow Quartz (Citrine or Iron-stained Quartz)
Silicon Dioxide (SiO2)