Sandstone (Ferruginous)
Arenite (primarily SiO2 with Iron Oxide staining)
Category
Browse sedimentary rock (possibly conglomerate or breccia with a quartz vein) specimens identified by the Rock Identifier community.
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Iron Oxide staining)
Jasper
Silicon Dioxide (SiO2)
Smoky Quartz
Smoky Quartz (SiO ₂)
Yellow Quartz Pebble
Silicon Dioxide (SiO2)
Sandstone
Sandstone (various mineral compositions)
Chert (Holey Stone)
Microcrystalline Quartz (SiO2)
Chert / Pink Flint
Cryptocrystalline Quartz (SiO2)
Chert / Flint
Cryptocrystalline quartz (SiO2)
Chert (with Liesegang Banding)
Microcrystalline quartz (SiO2)
Sandstone (with Iron concretions/staining)
Arenite (composed primarily of Quartz and Feldspar with Iron Oxide cement)
Chert (Yellow Jasper/Flint)
Microcrystalline Quartz (SiO2)
Chert (River Pebble)
Microcrystalline Quartz (SiO2)
Sandstone (Ferruginous)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)
Sandstone (with minor quartz and possible clay components)
Clastic Sedimentary Rock (SiO2 dominated)
Clear Quartz
Silicon Dioxide (SiO2)
Red Jasper
Jasper (a variety of Chalcedony, SiO₂)
Yellow Jasper
Silicon Dioxide (SiO2)
Sandstone (Red)
Arenite (SiO2 with Fe2O3)
Boxwork Siderite or Sepatarian Nodule Weathering
Siderite (FeCO3) with secondary mineralization or Boxwork Geode fragment
Blue Chalcedony
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Sandstone (likely Quartzose Sandstone)
Arenite (primarily SiO2)
Sandstone Beach Pebble
Clastic Sedimentary Rock (primarily Quartz with Iron Oxide coating)
Sandstone (with Lichen)
Arenite (composed primarily of SiO2)
Grey River Stone (Quartz-rich Quartzite/Siltstone)
Quartzite / Meta-siltstone (primarily SiO2)
Quartz Geode
Crystalline Silicon Dioxide (SiO2) within a nodule
Sandstone (Micaceous Sandstone)
Arenite (SiO2 with KAl2(AlSi3O10)(OH)2 inclusions)
Chert (Jasper/Flint variation)
Chert (SiO2)
Chert (Flint)
Chert (SiO2)
Quartz (specifically Quartzite or Massive Quartz)
Silicon Dioxide (SiO2)
Riverstone (Quartzite or Siltstone cobble)
Quartzite (primarily SiO2)
Chevron Amethyst
Silicon Dioxide (SiO2) with iron impurities
Amethyst (Pale/Lavender variety)
Silicon Dioxide (SiO2)
Sandstone
Arenite (primarily Quartz, SiO2)
Pyrite in Quartz
Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)
Quartz Druzy Geode Fragment
Silicon Dioxide (SiO2)
Jasper (Yellow/Brown variety)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Carnelian (Chalcedony variety)
SiO2 (Silicon Dioxide)
Chalcedony (Quartz variety)
Silicon Dioxide (SiO2)
Clear Quartz (Double Terminated)
Silicon Dioxide (SiO2)
Quartz Geode
Silicon Dioxide (SiO2)
Yellow Quartz (Citrine/Yellow Jasper mix)
Silicon Dioxide (SiO2) with iron oxide inclusions
Quartz Geode Fragment
Silicon Dioxide (SiO2)