Chert (specifically Chert Nodule/Flint)
Chert (Silicon Dioxide, SiO2)
sedimentary
Category
Mineral (Specifically A Variety Of Chalcedony, Which Is A Cryptocrystalline Quartz)
Browse mineral (specifically a variety of chalcedony, which is a cryptocrystalline quartz) specimens identified by the Rock Identifier community.
Jasper
Silicon dioxide (SiO2)
sedimentary
Chert (Jasper variety)
Silicon Dioxide (SiO2)
sedimentary
Chert (varieties include Flint and Jasper)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Dinosaur Bone (Gembone)
Petrified Dinosaur Bone (Apatite/Silica replacement)
sedimentary
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Aquamarine
Beryl (Be3Al2Si6O18)
mineral
Moonstone (bead form)
Potassium Aluminum Silicate (KAlSi3O8) - a variety of Orthoclase Feldspar
Mineral
Moss Agate
Chalcedony (SiO2) with inclusions of hornblende or chlorite
mineral
Tree Agate
Dendritic Agate (Silicon Dioxide, SiO2 + Manganese/Iron oxides)
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with iron impurities
mineral
K2 Azurite Granite / K2 Stone
Granite (igneous rock) with Azurite inclusions (mineral)
igneous
Chert (Agatized/Chalcedony variety)
Microcrystalline Quartz (SiO2)
sedimentary
Jasper (likely a variety of Brecciated Jasper or a patterned variety)
Silicon dioxide (SiO2)
Mineral
Chert (Chalcedony / Gray Flint)
Silicon Dioxide (SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Chert or Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Flint)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
sedimentary
Jasper
Silicon dioxide (SiO2)
sedimentary
Agate Geode / Nodular Chalcedony
Silicon Dioxide (SiO2) with impurities
mineral
River Pebbles and Quartz
Mixed Igneous, Sedimentary, and Metamorphic Rocks (Silicon Dioxide SiO2 dominant)
mixed
Pegmatite (Granitic)
Granitic Pegmatite containing Quartz, Feldspar, and Tourmaline (Schorl)
igneous
Chert (variant Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (River Cobble)
Microcrystalline or cryptocrystalline Quartz (SiO2)
sedimentary
Chert (often called Flint when dark)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
sedimentary
Jasper (Iron-rich Microcrystalline Quartz)
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Jasper with Agate Inclusions
Jasper (Silicon Dioxide, SiO2) with Chalcedony/Agate
sedimentary
Banded Chert / Banded Jasper (likely a variety of Chert/Chalcedony)
Chert (microcrystalline quartz)
Metamorphic Rock
Orthoclase Feldspar (or K-Feldspar)
Orthoclase (KAlSi3O8)
Mineral
Sandstone (Micaceous)
Arenite (primarily SiO2 with Phyllosilicates)
sedimentary
Granite (specifically Red Granite)
Phaneritic Plutonic Rock (High in Alkali Feldspar and Quartz)
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Jasper
Silicon dioxide (SiO2)
sedimentary
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO₂)
Mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Granite Pegmatite
Phaneritic Plutonic Igneous Rock
igneous
Emerald in Matrix (Quartz/Schist)
Beryl (Be₃Al₂Si₆O₁₈) with Chromium/Vanadium impurities
mineral
Chert (Jasper)
Microcrystalline quartz (SiO2)
sedimentary
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral