Red Jasper
Silicon Dioxide (SiO2) with hematite inclusions
sedimentary
Category
Sedimentary (Microcrystalline Silicate)
Browse sedimentary (microcrystalline silicate) specimens identified by the Rock Identifier community.
Learn about Sedimentary (Microcrystalline Silicate) in the encyclopedia
View all →
Chert (Flint)
Chert (SiO2)
sedimentary
Carnelian
Carnelian (Silicon Dioxide - SiO2)
mineral
Jasper
Silicon dioxide (SiO2)
sedimentary
Jasper or Agate Pebble
Microcrystalline Quartz (SiO2)
sedimentary
Agatized Fossil (Druzy Agate)
Silicon Dioxide (SiO2) replacing organic matter
sedimentary
Chert (or Flint)
SiO2 (Microcrystalline Quartz)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Chert / Flint
Microcrystalline Quartz (SiO2)
sedimentary
Mudstone
Lutylite (group of fine-grained sedimentary rocks)
sedimentary
Yellow Chalcedony (or Yellow Jasper / Agate)
Silicon Dioxide (SiO2)
mineral
Carnelian
Silicon Dioxide (Chalcedony variety)
gemstone
Zebra Jasper
Silicon Dioxide (SiO2) with impurities; typically a form of Chalcedony/Microcrystalline Quartz
sedimentary
Yellow Jasper
Cryptocrystalline Quartz (SiO2)
sedimentary
Quartz on Limestone
Silicon Dioxide (SiO2) on Calcium Carbonate (CaCO3)
Mineral on Sedimentary
Chalcedony
Silicon Dioxide (SiO2)
mineral
Quartz Geode
Crystalline Silicon Dioxide (SiO2)
mineral
Geode
Quartz nodule / Chalcedony-lined cavity
sedimentary
Chalcedony with Druzy Quartz Geode
Silicon Dioxide (SiO2)
mineral
Mixed Tumbled Stones (Mostly Agate, Jasper, and Quartz)
Silicon Dioxide (SiO2)
sedimentary and metamorphic minerals
Flint
SiO2 (Microcrystalline Quartz / Chert)
sedimentary
Flint
SiO2 (Microcrystalline Quartz / Chert)
sedimentary
Ironstone Matrix with Jasper / Chert
Ferruginous Chert / Limonitic Jasper (SiO2 with Fe-oxides)
sedimentary
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Brecciated Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Green Chalcedony (Green Agate)
Silicon Dioxide (SiO2)
mineral
Chert (often called Flint)
Chert (Microcrystalline or cryptocrystalline Silica, SiO2)
sedimentary
Tumbled red jasper
Jasper, microcrystalline quartz (SiO₂) colored mainly by iron oxides
mineral
Agate (Carnelian-like)
Chalcedony (Silicon Dioxide, SiO2)
mineral
Chert Arrowhead
Cryptocrystalline Quartz (SiO2)
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Chert (often called Flint or Jasper if reddish)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Flint)
Microcrystalline Quartz or Cryptocrystalline Silica (SiO2)
sedimentary
Hag Stone
Perforated Chert (Microcrystalline Silica, SiO2)
sedimentary
Chert Breccia
Brecciated Chert (Microcrystalline Silica, SiO2)
sedimentary
Chert (often called Flint or Jasper)
Chert (Microcrystalline or Cryptocrystalline Silica, SiO2)
sedimentary
Chert (Flint)
Microcrystalline Quartz or Cryptocrystalline Silica (SiO2)
sedimentary
Chert (Arrowhead)
Chert (primarily Microcrystalline Silica, SiO2)
sedimentary
Tree Agate
Silicon Dioxide (SiO2) with Chlorite/Manganese inclusions
sedimentary
Petrified Wood
Silicified Wood (primarily SiO2)
metamorphic
Yellow Jasper
Silicon Dioxide (SiO2) with Iron Oxide impurities
mineral
Jasper
Silicon dioxide (SiO2) with impurities
sedimentary