Jasper
Silicon Dioxide (SiO2)
Category
Browse sedimentary (man made) specimens identified by the Rock Identifier community.
Jasper
Silicon Dioxide (SiO2)
Yellow Chert (Chalcedony)
Microcrystalline Quartz (SiO2)
Bituminous Coal (with Anthracite or Vitrinite inclusion)
Organic-rich Sedimentary Rock (Carboniferous classification)
Chert (often called Flint or Agate nodule)
Cryptocrystalline Quartz (SiO2)
Specular Hematite (Specularite)
Iron Oxide (Fe2O3)
White Marble
Recrystallized Calcite Rock (CaCO3)
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
Chert
Microcrystalline quartz (SiO2)
Chert (Jasper/Agate variety)
Silicon Dioxide (SiO2)
Banded Calcite (often sold as 'Mexican Onyx' or 'Green Onyx')
Calcite (Calcium Carbonate, CaCO3)
Chert
Microcrystalline Quartz (SiO2)
Chert (often called Flint)
Microcrystalline Quartz (SiO2)
Banded Sandstone
Arenite with Liesegang banding
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Sandstone (Red/Brown Variety)
Arenite (composed primarily of SiO2 with Fe2O3 iron oxide inclusions)
Pyrite in Matrix
Iron Sulfide (FeS2)
Clear Quartz
Silicon Dioxide (SiO2)
Carnelian cabochon
Orange-red variety of chalcedony (microcrystalline quartz), SiO₂
Pyrite
Iron Sulfide (FeS2)
Sandstone (with iron staining)
Quartz Arenite / Ferruginous Sandstone
Chert / River Pebble
Microcrystalline Quartz (SiO2)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Hag Stone (Flint with natural hole)
Silicon Dioxide (SiO2) - Nodular Chert / Flint
Chert / Green Jasper
Silicon Dioxide (SiO2)
Sandstone
Arenite (SiO2 principal)
Polished jasper pendant
Jasper, microcrystalline quartz (SiO₂) with iron-oxide and other mineral inclusions
Flint/Chert Nodule in Limestone
Sedimentary rock containing microcrystalline quartz (SiO2) within a calcium carbonate (CaCO3) matrix
Chert (specifically Red Chert or Jasper)
Microcrystalline Quartz (SiO2)
Chert (specifically Flint or Common Chert node)
Silicon Dioxide (SiO2)
Chert (variations include Flint/Novaculite)
Chert (formula: SiO2)
Chert (often called Flint for darker varieties)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Tumbled orange chalcedony / jasper
Microcrystalline quartz, SiO₂, likely iron-stained chalcedony or quartz-rich jasper
Tumbled amber-colored chalcedony or jasper
Microcrystalline quartz (SiO₂), likely iron-stained chalcedony/jasper
Coquina
Coquina (Bioclastic Limestone)
Quartz
Silicon dioxide (SiO₂)
Chert with Limestone
Silicon Dioxide (SiO2) in Calcium Carbonate (CaCO3) Matrix
Chert (Tan/Brown variety)
Chert (Silicon Dioxide, SiO2)
Chert / Yellow Jasper
Microcrystalline Quartz (SiO2)
Chert (Nodule)
Chert (SiO2)
Coquina
Biogenic Limestone (Calcite/Aragonite base, CaCO3)
Chert (specifically Jasper or Flint variety)
Cryptocrystalline Quartz (SiO2)
Petrified Wood
Silicified Wood (primarily SiO2)