Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
Category
Browse sedimentary (physico chemical precipitate) specimens identified by the Rock Identifier community.
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
Quartz (likely Clear Quartz or Rock Crystal)
Quartz (SiO2)
Oolitic Limestone
Oolitic Limestone (Calcium Carbonate, CaCO3)
Oolitic Limestone
Oolitic Carbonate (CaCO3)
Sulfur (with possible Cullet Glass or Slag imitation)
Native Sulfur (S8)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Chert (Yellow/Tan)
Microcrystalline Quartz (SiO2)
Red Jasper
Jasper (Silicon Dioxide, SiO2 with iron oxide impurities)
Chert (with Limestone/Dolomite host)
Microcrystalline Quartz (SiO2)
Chert (Black Chert or Flint)
Silicon Dioxide (SiO2)
Chert (Pink Jasper variant)
Microcrystalline Quartz (SiO2)
Chert (Pebble)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert
Microcrystalline Quartz (SiO2)
Chert (and Jasper blend)
Chert (Microcrystalline Quartz, SiO2)
Chert (varieties include Flint or Jasper)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Ironstone (likely siderite or goethite-rich siltstone)
Ferruginous Siltstone
Chert (Jasper variety)
Chert (SiO2)
White Onyx (Marble Onyx)
Calcite (CaCO3) - Banded Calcium Carbonate
Chert (Yellow Jasper variant)
Microcrystalline Quartz (SiO2)
Chert / Flint
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Chert Nodule)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert / Flint
Chert (Cryptocrystalline Quartz, SiO2)
Limestone
Calcium Carbonate (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Heulandite with Stilbite
Heulandite-Ca ((Ca,Na)2-3Al3(Al,Si)2Si13O36·12H2O) and Stilbite-Ca (NaCa4(Si27Al9)O72·28H2O)
Blue Calcite
Calcium Carbonate (CaCO3)
Chert (Jasper variety)
Chert (Silicon Dioxide, SiO2)
Chert (Flint)
Chert (SiO2)
Limestone
Calcium Carbonate (CaCO3)
Chert (variations include Flint or Jasper)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Chert (or Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Travertine
Terrestrial Sedimentary Form of Calcium Carbonate (CaCO3)
Chert (varietal Flint or Jasper)
Silicon Dioxide (SiO2)
Chert (Yellow Jasper/Flint)
Silicon Dioxide (SiO2)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Chert (specifically Flint or Jasper variant)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Nodule)
Chert (composition: SiO2)
Chert (Nodule)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Nodule)
Silicon Dioxide (SiO2)
Chert Nodule
Chert (Cryptocrystalline variety of Quartz, SiO2)
Chert (and/or Siltstone River Pebble)
Silicon Dioxide (SiO2) - Microcrystalline Quartz