Quartz
Silicon Dioxide (SiO2)
Category
Browse sedimentary rock (possibly conglomerate or breccia with a quartz vein) specimens identified by the Rock Identifier community.
Quartz
Silicon Dioxide (SiO2)
Sandstone (likely Quartzose type)
Clastic sedimentary rock (primarily SiO2)
Quartz (Citrine or Iron-stained Quartz)
Silicon Dioxide (SiO2)
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Yellow Quartz (Citrine/Yellow Jasper)
Silicon Dioxide (SiO2)
Banded Iron Formation
Banded Iron Formation (BIF)
Sandstone (Quartz Arenite)
Sandstone (dominated by SiO2 quartz grains)
Epidote
Epidote (Ca2(Al,Fe)3(SiO4)3(OH))
Quartz Druze on Matrix
Silicon Dioxide (SiO2)
Chert (River Pebble)
Microcrystalline silicon dioxide (SiO2)
Red Sandstone (Iron-rich Sandstone)
Clastic Sedimentary Rock - Quartz Arenite / Arkose with Hematite Cement
Chert (Jasper-like)
SiO2 (Cryptocrystalline Quartz)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Amethyst Quartz
Silicon Dioxide (SiO2) with iron impurities
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Blue Kyanite in Quartz
Kyanite (Al2SiO5)
Sandstone
Arenite (primarily SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Sandstone
Sandstone (Clastic Sedimentary Rock)
Clear Quartz Crystal Cluster
Silicon Dioxide (SiO2)
White Quartz
Silicon Dioxide (SiO2)
Quartz Geode
Silicon Dioxide (SiO2)
Jasper
Jasper (Silicified microcrystalline quartz) - SiO2
Clear Quartz
Silicon Dioxide (SiO2)
Sandstone (Weathered Pebble)
Arenite (SiO2 primarily)
Quartzite
Quartzite
Sandstone (likely Quartzose Sandstone)
Arenite (primarily SiO2)
Sandstone (Quartzite-rich Cobble)
Clastic sedimentary rock (primarily SiO2)
Geode (unopened)
Chert / Chalcedony Geode (SiO2)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Sandstone (likely Quartzose Sandstone)
Arenite (SiO2 principal composition)
Amethyst
Amethyst (Silicon Dioxide with iron impurities), SiO2
Amethyst
Amethyst (Silicon Dioxide with Iron impurities, SiO2)
White Quartz
Silicon Dioxide (SiO2)
Quartz (Milky or Cloudy Quartz)
Silicon Dioxide (SiO2)
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz Druzy Geode
Silicon Dioxide (SiO2)
Chert (Yellow Jasper variant)
Microcrystalline Quartz (SiO2)