Chert (Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Category
Browse mineral, variety of chalcedony (microcrystalline quartz) specimens identified by the Rock Identifier community.
Chert (Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Dendritic Agate
Silicon Dioxide (SiO2) with Manganese or Iron Oxide inclusions
Quartz (Milky/Clear Quartz)
Silicon Dioxide (SiO2)
Banded Chert
Microcrystalline Quartz (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Quartz Geode
Silicon Dioxide (SiO2) in a Secondary Sedimentary/Volcanic cavity
Milky Quartz
Silicon Dioxide (SiO2)
Chert (Flint)
Chert (Cryptocrystalline variety of Quartz, SiO2)
Chert (Banded Variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite (mica)
Quartz Geode
Silicon Dioxide (SiO2)
Chert (and Limestone)
Chert (consisting of Microcrystalline Quartz, SiO2)
Chert (specifically Agate/Jasper variety)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (Nodule)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Tiger's Eye
Tiger's Eye (a variety of Chalcedony, which is cryptocrystalline quartz). Chemical Formula: SiO2 with inclusions of crocidolite fibers.
Pink Chalcedony (Agate/Jasper blend)
Silicon Dioxide (SiO₂)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Crystalline Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic silicate with secondary mineral inclusions)
Chert (Flint/Jasper variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Citrine
Silicon Dioxide (SiO2)
Chalcedony (Common Agate pebble)
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Chert (Jasper variation)
Microcrystalline Quartz (SiO2)
Green Chert
Microcrystalline Quartz (SiO2)
Chert / Jasper
Microcrystalline Quartz (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Blue Chalcedony
Silicon Dioxide (SiO2)
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
Chert Pebble (Yellow/Brown Jasper variety)
Microcrystalline Quartz (SiO2)
Chert (Iron-stained)
Microcrystalline quartz (SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Chrysocolla Chalcedony
Hydrated Copper Phyllosilicate (Cu,Al)2H2Si2O5(OH)4 + SiO2
Quartz (Citrine or Smoky variant)
Silicon Dioxide (SiO2)