Iron-stained quartz-rich rock, possibly jasper or chert
Microcrystalline quartz (SiO₂) with iron oxides/hydroxides
Category
Browse sedimentary (man made composite) specimens identified by the Rock Identifier community.
Iron-stained quartz-rich rock, possibly jasper or chert
Microcrystalline quartz (SiO₂) with iron oxides/hydroxides
Chert
Cryptocrystalline Quartz (SiO2)
Sandstone (Pebble)
Sandstone (arenite, arkose, wacke depending on composition)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Blue Slag Glass
Amorphous Silica (Byproduct of smelting)
Blue Goldstone
Aventurine Glass (SiO2 with Cobalt/Copper inclusions)
Synthetic Resin (Artificial Specimen)
Polyurethane or Polyester Resin
Slag Glass (Cullet)
Amorphous Silicon Dioxide (SiO2) with metal oxide colorants
Slag (Anthropogenic Glass/Iron byproduct)
Ferro-silicate Slag
Artisanal Glass Beads (Simulated Goldstone or Aventurine Glass)
Silicon Dioxide (SiO2) with metallic inclusions
Blue slag glass or dyed glass-like industrial material
Amorphous silicate glass; likely copper-bearing blue slag, but possibly colored man-made glass
Yellow Sapphire (Raw)
Corundum (Al2O3)
Pyrite
Iron Sulfide (FeS2)
Flint / Chert
Microcrystalline quartz (SiO2)
Swirled Agate Bead
Silicon Dioxide (SiO2)
Chert / Flint
Microcrystalline Quartz (SiO2)
Chert (often called Flint or Jasper if reddish)
Microcrystalline Quartz (SiO2)
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
White Marble
Recrystallized Calcite (CaCO3)
Crushed Stone / Gravel
Aggregatus saxum (variable mineral composition)
Fossilized Shark Tooth (Eroded)
Carcharodon sp. or Otodus sp. fragment (likely)
Chert (often called Flint)
Chert (SiO2)
Chert (Black Chert or Flint)
Silicon Dioxide (SiO2)
Chert / Flint
Microcrystalline Quartz (SiO2)
Chert (Flint / Jasper variant)
Microcrystalline Quartz (SiO2)
Chert (Flint Arrowhead)
Silicon Dioxide (SiO2)
Black Chert River Stone
Cryptocrystalline Quartz (SiO2)
Chert (Flint Nodules)
Cryptocrystalline Quartz (SiO2)
Sandstone (likely Quartzose Sandstone)
Arenite
Beach Pebble (Chalcedony / Chert)
Silicon Dioxide (SiO2)
Chert (Black Flint)
Silicon Dioxide (SiO2)
Chert
Microcrystalline quartz (SiO2)
Chert
Microcrystalline quartz (SiO2)
Red Sandstone
Arenite (Iron-rich)
Chert (with Limestone matrix)
Silicon dioxide (SiO2)
Chert (Yellow Jasper/Flint)
Microcrystalline Quartz (SiO2)
Chert (and/or Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (variations include Flint/Jasper)
Cryptocrystalline Quartz (SiO2)
Breccia
Breccia
Chert / Jasper
Silicon Dioxide (SiO₂)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (Green Chert or Jasper)
Microcrystalline Quartz (SiO2)