Mineraloid (Human Made Geological Specimen)

Iron Meteorite

Siderite (comprised primarily of Kamacite and Taenite alloys)

Chert (Flint Pebbles)

Microcrystalline quartz (SiO2)

Chert (variations include Flint or Jasper)

Chert (chemical sedimentary rock), Quartz (SiO2)

Limonite (Gozzany Iron)

Limonite (FeO(OH)·nH2O)

Chert (Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (containing Iron Oxide spots)

Microcrystalline Quartz (SiO2)

Chert (Flint variety)

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Banded Rock (likely Quartz-rich)

Uncertain, likely a Metamorphic Rock (e.g., Gneiss or Schist) with prominent Quartz and other minerals

Chert (Flint)

Chert (Microcrystalline or cryptocrystalline Quartz, SiO2)

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide impurities

Chert (often called Flint or Jasper)

Microcrystalline silica (SiO2)

Slag

Anthropogenic Iron Silicate Glass

Chert (specifically Flint or Common Chert)

Silicon Dioxide (SiO2)

Chert (Iron-stained)

Chert (Microcrystalline Quartz, SiO2)

Chert (Pink Chert / Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Flint)

Chert (Microcrystalline Quartz, SiO2)

Chert (and Flint)

Silicon Dioxide (SiO2)

Agate

Chalcedony (SiO2)

Chert (specifically Flint)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Chert (specifically Flint or Jasper variant)

Chert (Siliceous rock composed of microcrystalline Quartz, SiO2)

Azurite-Malachite (often called Azerite Malachite or Azurmalachite)

Azurite (Cu3(CO3)2(OH)2) and Malachite (Cu2CO3(OH)2)

Sodalite

Sodalite (Na4Al3Si3O12Cl)

Chert (Arrowhead Preform or Flake)

Microcrystalline Quartz (SiO2)

Chert (Iron-stained)

Microcrystalline silica (SiO2) with trace Iron oxide (Fe2O3)

Chert / Flint (a variety of Chert)

Chert (SiO2)

Hematite

Hematite, Iron(III) oxide (Fe2O3)

Lapis Lazuli

Lapis lazuli (a rock primarily composed of Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Chert (often called Flint or Jasper)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Banded Chert or Agate

Silicon Dioxide (SiO2)

Brecciated Chert

Sedimentary Chert (SiO2) with Calc-Silicate mineralization

Chert (and associated Sedimentary rocks)

Microcrystalline Silica (SiO2)

Quartz (likely Yellow/Orange variety, possibly Citrine or Chalcedony with iron staining)

Quartz (SiO₂)

Jasper

Jasper (Silicon Dioxide, SiO2)

Chert (specifically a nodule with Chalcendony/Agate banding)

Microcrystalline Quartz (SiO2)

Chert (varietal: Flint/River Pebble)

Cryptocrystalline Quartz (SiO2)

Chert (Arrowhead Artifact)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Chert (Cherty Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chrysocolla

Hydrated copper silicates (Cu,Al)2H2Si2O5(OH)4·nH2O

Chert (Cherty Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Agate (specifically a small Chalcedony nodule)

Agate (Cryptocrystalline variety of Quartz, SiO2)

Chert Nodule (Flint)

Microcrystalline Quartz (SiO2)