Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Category
Browse sedimentary rock (possibly conglomerate or breccia with a quartz vein) specimens identified by the Rock Identifier community.
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Quartz (Variety: Citrine or Tumbled Chalcedony)
Silicon Dioxide (SiO2)
Chert Nodule
Chert (Cryptocrystalline variety of Quartz, SiO2)
Crystal Quartz Beads (likely Clear Quartz)
Quartz (SiO₂)
Geode with Quartz/Chalcedony
Silicon Dioxide (SiO2)
Red Sandstone
Sandstone (mainly SiO2 with Iron Oxide cement)
Red Sandstone
Arenite (with Iron Oxide / Hematite cementation)
Amethyst Quartz
Amethyst (SiO2 with Iron impurities)
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Quartz (River Pebble)
Silicon Dioxide (SiO2)
Quartz (Citrine or Iron-Stained variety)
Silicon Dioxide (SiO2)
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Iron oxide inclusions
Pyrite (on host rock/ore)
Iron Sulfide (FeS2)
Chert Nodule (Flint)
Chert (Cryptocrystalline Silica - SiO2)
Sandstone (specifically an Iron-Concretion)
Arenite with Iron Oxide (Limonite/Goethite) cementation
Gneiss (Banded Gneiss)
Gneiss
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
Iron-stained Quartz
Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3/FeO(OH))
Chert (Jasper/Agate variety)
Silicon Dioxide (SiO2)
Red Sandstone
Arenite (primarily Quartz with Iron Oxide coating)
Yellow Jasper
Jasper (Silicon Dioxide, SiO2)
Chert (often called Flint or Jasper depending on color)
Chert (SiO2 - Microcrystalline or Cryptocrystalline Quartz)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Dalmatian Stone (Dalmatian Jasper)
Peralkaline Quartz-Feldspar Rock with Arfvedsonite
Citrine
SiO2 (Silicon Dioxide)
Terrazzo (Man-made Composite)
Cementitious or Resin-bound Lithic Composite
Yellow Chert (Gold-toned Jasper)
Silicon Dioxide (SiO2)
Petrified Wood
Silicified Wood (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Ruby in Kyanite
Al2O3 (Corundum) in Al2SiO5 (Kyanite-Fuchsite-Quartz)
Amethyst (Variety of Quartz)
Silicon Dioxide (SiO2) with iron impurities
Amethyst (Purple Quartz)
Silicon Dioxide (SiO2) with iron impurities
Sandstone (Ferruginous)
Arenite (with high iron oxide content)
River Quartzite Siltstone
Quartz-rich Meta-siltstone (SiO2 dominated)
Shale
Shale (comprised mostly of clay minerals and quartz)
Sandstone (likely Arkosic or Lithic)
Clastic Sedimentary Rock (SiO2 with accessory minerals)
Quartzite
Quartzite (primarily SiO2)
Red Jasper (Chert)
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)