Chert (Jasper/Flint variant)
Silicon Dioxide (SiO2)
Category
Browse sedimentary (man made conglomerate) specimens identified by the Rock Identifier community.
Chert (Jasper/Flint variant)
Silicon Dioxide (SiO2)
Chert (often called Flint)
Chert (Microcrystalline Quartz, SiO2)
Chert (Nodular or Massive Variety)
Cryptocrystalline Quartz (SiO2)
Chert (variations include Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (Flint)
Chert (Microcrystalline or cryptocrystalline Quartz - SiO2)
Fossiliferous Limestone (Coquina)
Biogenic Limestone (Calcium Carbonate, CaCO3)
Chert (Field-collected Arrowhead-shaped Fragment)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (specifically Zebra Chert/Flint)
Silicon Dioxide (SiO2)
Michigan Float Copper
Native Copper (Cu)
Note on Image Identification: Textile
N/A (Anthropogenic material)
Crushed Limestone
Calcium Carbonate (CaCO3)
Basalt
Basalt
Diamond (Cut jewelry specimen)
Diamond (pure Carbon, C)
Ruby in Matrix
Corundum (Al2O3)
Banded Iron Formation (BIF) / Ironstone Conglomerate
Ironstone (Hematite/Goethite rich sedimentary rock)
Fossil Shark Tooth
Carcharocles or Lamniformes (order)
Chert Pebble/Nodule
Chert (a microcrystalline or cryptocrystalline sedimentary form of quartz, SiO2)
Chert Arrowhead (Lithic Tool)
Microcrystalline quartz (SiO2) - Archeological lithic artifact
Chert (Iron-stained)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (and Jasper/Flint variety)
Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Diamond (Cut and Polished)
Diamond (pure Carbon, C)
Diamond
Carbon (C)
Rough Sapphire (Corundum)
Corundum (Al2O3)
Pumice
Pumice (Vitreous volcanic rock)
Limestone
Calcium Carbonate (CaCO3)
Blue-dyed Quartz Druzy
Silicon Dioxide (SiO2) with artificial pigment
Synthetic Convention Badge (Plastic/PVC)
Polyvinyl Chloride (PVC) / Polycarbonate
Chert (Arrowhead Fragment)
Microcrystalline Quartz (SiO2)
Chert (specifically Black Chert or Flint)
Cryptocrystalline Quartz (SiO2)
Chert / Flint
Silicon Dioxide (SiO2)
Flint / Chert
Microcrystalline Quartz (SiO2)
Chert / Flint
Cryptocrystalline quartz (SiO2)
Obsidian
Volcanic Glass (70% or more SiO2)
Pumice
Pumice (Vesicular volcanic glass)
Pink Granite
Phaneritic Felsic Igneous Rock (Granite)
Pyrite
Iron Sulfide (FeS2)
Flint
Silicon Dioxide (SiO2) - Chert variety
Diamond (or Diamond Simulant)
Carbon (C) or Cubic Zirconia (ZrO2)
Seashell Fragment
Calcium carbonate (CaCO3) - primarily Aragonite or Calcite
Diamond (Cut Gemstone)
Carbon (C)