Chert (Flint)
Microcrystalline Quartz (SiO2)
Category
Browse man made rock (sedimentary analogue) specimens identified by the Rock Identifier community.
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (specifically Jasper or Flint)
Cryptocrystalline Quartz (SiO2)
Chert (Jasper variation)
Microcrystalline Quartz (SiO2)
Coquina
Bioclastic Limestone (Coquina)
Chert (often called Flint or Jasper if reddish)
Microcrystalline Quartz (SiO2)
Pink Granite
Phaneritic Felsic Intrusive Igneous Rock
Terrazzo (Synthetic Composite Rock)
Cementitious or Epoxy Resin-bound Aggregates
Diamond in Kimberlite
Diamond (C in Kimberlite Matrix)
Flint (or Chert)
Cryptocrystalline Quartz (SiO2)
Banded Calcite or Travertine
Calcium Carbonate (CaCO3)
Chert (with Limestone matrix)
Silicon dioxide (SiO2)
Chert (and/or Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (variations include Flint/Jasper)
Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert / Jasper
Silicon Dioxide (SiO₂)
Shale (Beach-worn)
Laminated Pelite (primarily clay minerals and quartz)
Chert (Iron-stained)
Chert (Microcrystalline and Cryptocrystalline Quartz, SiO2)
Granite
Granite (felsic intrusive igneous rock)
Yellow Chert (Chalcedony)
Microcrystalline Quartz (SiO2)
Chert (Nodule)
Chert (Silicon Dioxide, SiO2)
Chert (Nodule)
Microcrystalline Quartz (SiO2)
Chert (Jasper/Common Chert Pebble)
Microcrystalline Quartz (SiO2)
Chert / Flint
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Fossilized Shell in Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
Coquina
Coquina (Bioclastic Limestone)
Shale
Fissile Mudstone (primarily composed of phyllosilicate minerals like kaolinite, montmorillonite, and illite)
Pink Granite
Phaneritic Felsic Intrusive Igneous Rock
Chert
Cryptocrystalline Quartz (SiO2)
Granite
Phaneritic Igneous Rock (composed mostly of Quartz, Feldspar, and Mica)
Chert (Nodule)
Microcrystalline Quartz (SiO2)
Pyrite
Iron Sulfide (FeS2)
Diorite
Phaneritic Intrusive Igneous Rock (composed of Plagioclase feldspar, Hornblende, and Biotite)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Dolerite (Diabase)
Dolerite / Diabase
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Diamond (as set in a metal alloy ring)
Diamond (Pure Carbon, C)
Chert (varieties include Flint and Mudstone)
Microcrystalline Silica (SiO2)
Quartz (likely Chalcedony or Chert)
Silicon Dioxide (SiO2)
Chert (often called Flint)
Chert (SiO2)
Granite (weathered pebble)
Granite (plutonic igneous rock)
Jasper (Iron-rich Chalcedony)
Jasper (Microcrystalline Silicon Dioxide, SiO2 plus iron oxide impurities)