Agate (or Banded Agate)
Agate (a variety of Chalcedony, which is a cryptocrystalline form of Quartz); Chemical Formula: SiO₂ (Silicon Dioxide)
Mineral, specifically a Cryptocrystalline Quartz variety
Category
Mineral, Specifically A Cryptocrystalline Quartz Variety
Browse mineral, specifically a cryptocrystalline quartz variety specimens identified by the Rock Identifier community.
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Banded Carnelian
Carnelian (Silicon Dioxide / SiO2)
mineral
Fancy Jasper
Silicon Dioxide (SiO₂)
sedimentary
Blue Lace Agate
Cryptocrystalline variety of Quartz (SiO2)
mineral
Yellow Jasper (Chert)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Red Jasper (with Quartz)
Silicon Dioxide (SiO2) with Hematite inclusions
mineral
Agate Nodules
Cryptocrystalline Quartz (SiO2)
mineral
Chert (Nodule fragment)
Silicon Dioxide (SiO2)
sedimentary
Quartz (Agate/Chalcedony variety)
Silicon Dioxide (SiO2)
mineral
Banded Agate (specifically Carnelian Agate)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Chert
Microcrystalline quartz (SiO2)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Red Agate
Agate (Cryptocrystalline variety of Quartz, SiO2)
mineral
Chert / Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Mixed collection of minerals and rocks (Jasper, Carnelian, Granite, and Quartz)
Silicon Dioxide (SiO2) with varying impurities for silicates and igneous aggregates
igneous, sedimentary, and metamorphic
Chalcedony (Agate/Carnelian)
Cryptocrystalline Silicon Dioxide (SiO2)
mineral
Leopard Skin Jasper
Chalcedony (cryptocrystalline Quartz)
Mineral
Banded Agate
Chalcedony (cryptocrystalline variety of Quartz), SiO2
mineral
Chalcedony (specifically Agate or Carnelian variety)
Cryptocrystalline Silica (SiO2)
mineral
Sardonyx Cameo
Silicon Dioxide (SiO2) - variety Cryptocrystalline Quartz
Mineral
Chert (Flint Nodules)
Microcrystalline Quartz (SiO2)
sedimentary
Chert / Flint
Cryptocrystalline Quartz (SiO2)
sedimentary
Banded Agate (specifically Carnelian Agate slice)
Chalcedony (cryptocrystalline variety of Quartz), SiO2
mineral
Chert (Jasper variety)
Chert (SiO2)
sedimentary
Agate (specifically a small Chalcedony nodule)
Agate (Cryptocrystalline variety of Quartz, SiO2)
mineral
Ocean Jasper (Orbicular Jasper)
Silicon Dioxide (SiO2) - Variety of Chalcedony/Quartz
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Flint
SiO2 (Cryptocrystalline Quartz)
sedimentary
Jasper (or possibly Agate/Chalcedony) beads
SiO2 (Silicon Dioxide)
mineral
Banded Agate (specifically Botswana Agate or Water-line Agate)
Chalcedony (cryptocrystalline variety of Quartz), SiO2
mineral
Flint
SiO2 (Cryptocrystalline Quartz / Chert)
sedimentary
Chert / Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Tripolitic Chert / Flint Nodules)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (and Flint)
Silicon Dioxide (SiO2)
sedimentary
Agate (Carnelian / Chalcedony)
Silicon Dioxide (SiO2)
mineral
Polished green-and-white jasper (likely ocean jasper or orbicular jasper)
Microcrystalline quartz/chalcedony (SiO₂) with chlorite, epidote, calcite, and iron-oxide inclusions
metamorphic
Yellow Jasper
Silicon Dioxide (SiO2) - Impure Cryptocrystalline Quartz
sedimentary
Yellow Jasper
Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Jasper variety)
Microcrystalline Quartz (SiO2)
sedimentary
Agate (specifically a Blue Agate Geode Slice)
Chalcedony (cryptocrystalline variety of Quartz); SiO2
mineral
Banded Agate (specifically Eye Agate / Chalcedony)
Agate (Cryptocrystalline variety of Quartz, SiO2)
mineral
Chalcedony (specifically Agate and Carnelian variety)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral