Geode with Quartz and possibly Jasper/Hematite
Quartz (SiO2) and Chalcedony (cryptocrystalline SiO2), possibly stained by iron oxides
Category
Browse sedimentary (microcrystalline quartz) specimens identified by the Rock Identifier community.
Geode with Quartz and possibly Jasper/Hematite
Quartz (SiO2) and Chalcedony (cryptocrystalline SiO2), possibly stained by iron oxides
Chert / Flint
Cryptocrystalline Quartz (SiO2)
Red Jasper
Opaque Microcrystalline Quartz (SiO2 with Fe2O3)
Jasper (Petrified Wood variant)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (Jasper nodule)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Yellow Jasper
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Agate (translucent pebble)
Silicon dioxide (SiO2) - Microcrystalline Quartz
Chert (Jasper-rich)
Silicon dioxide (SiO2) - Microcrystalline Quartz
Chert (Lightly weathered variety)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Jasper with Quartz Veining
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Jasper-Agate
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
Chalcedony (Agate)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (varietal: Jasper or Ironstone nodule)
Microcrystalline Quartz (SiO2) with iron oxides
Chert (Flint)
Chert (Microcrystalline or cryptocrystalline Quartz, SiO2)
Chert (River Pebble)
Microcrystalline Silica (SiO2)
Chert Pebble
Microcrystalline silica (SiO2)
River Pebble (Quartzite)
Quartzite (SiO2)
Chert with Chalcedony/Quartz Vug
Cryptocrystalline Silica (SiO2)
Chalcedony
Cryptocrystalline Quartz (SiO2)
Blue Chalcedony
Cryptocrystalline Quartz (SiO2)
Jasper
Silicon dioxide (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
Jasper pebble
Silicon Dioxide (SiO2) with impurities
Blue Chalcedony
Silicon Dioxide (SiO2)
Blue Chalcedony
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Polished Jasper (Mushroom Carving)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Quartz Geode (River Cobble)
Silicon Dioxide (SiO2)
Agate (specifically a Yellow/Honey Agate)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Petrified Wood
Silicified Wood (primarily SiO2)
Jasper
Jasper (SiO2)
Jasper River Stone
Silicon Dioxide with Iron Oxide impurities (SiO2 + Fe2O3)
Chert Nodules / Flint
Chert (Silicon Dioxide, SiO2)
Red Jasper
Jasper (Silicon Dioxide, SiO2)
Petrified Wood
Silicified Wood (SiO2)
Chert (Flint Nodules)
Silicon Dioxide (SiO2)
Chert (variations include Flint/Jasper)
Chert (SiO2)
Green Jasper
Silicon Dioxide (SiO2) with impurities
Petrified Wood
Silicified Wood (SiO2)
Red Jasper
Silicon Dioxide with Iron Oxide (SiO2)
Jasper (Red Jasper)
Silicon Dioxide (SiO₂)
Jasper
Silicon dioxide (SiO2)