Chert Pebble
Microcrystalline Quartz (SiO2)
Category
Browse organic (paper and cellulose) specimens identified by the Rock Identifier community.
Chert Pebble
Microcrystalline Quartz (SiO2)
Chert / Greenstone
Silicon Dioxide (SiO2) with impurities
Chert (variant Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (often called Flint)
Chert (SiO2)
Chert (with Limestone matrix)
Chert (Silica: SiO2)
Chert (Jasper/Chalcedony)
Microcrystalline Silica (SiO2)
Chert (Green variety)
Chert (Silicon Dioxide, SiO2)
Chert (often called Flint when dark)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Fossil Coral (Rugose Coral Fragment)
Rugosa (extinct order of solitary and colonial corals)
Chert (Tan/Brown)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Black Pearl (Tahitian Type)
Aragonite / Pinctada margaritifera (CaCO3 + Conchiolin)
Travertine
Calcareous Tufa / Travertine (CaCO3)
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Chert (often called Flint or River Stone)
Chert (Microcrystalline Silicon Dioxide, SiO2)
Petrified Wood
Silicified Wood (primarily Chalcedony or Quartz, SiO2)
Chert (includes Flint & Jasper)
Chert (Siliceous sedimentary rock, chemical formula SiO2)
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
Chert (specifically Red Chert or Jasper)
Microcrystalline Quartz (SiO2)
Chert (Basanite variety)
Microcrystalline Quartz (SiO2)
Chert (Flint variety)
Microcrystalline context of Quartz (SiO2)
Chert (varieties include Flint and Jasper)
Silicon Dioxide (SiO2) / Microcrystalline Quartz
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
Chert (and Flint)
Cryptocrystalline Quartz (SiO2)
Moss Agate
Chalcedony (SiO2) with inclusions of manganese or iron oxides
Chert (Nodule)
Silicon Dioxide (SiO2)
Jasper (Petrified Wood Variety)
Silicon Dioxide (SiO2)
Chert (variations include Flint)
Chert (Silicon Dioxide, SiO2)
Chert (Flint)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Shungite
Non-crystalline carbon (similar to anthracite coal or meta-anthracite)
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Jasper (Red Jasper)
Silicon Dioxide (SiO₂)
Chert (Flint)
Chert (Microcrystalline Quartz, SiO2)
Chert (Iron-stained variant)
Microcrystalline Quartz (SiO2)
Fossiliferous Shale Matrix
Clastic Sedimentary Rock with Brachiopod or Mollusk shell fragments
Chert (Chert Nodule with Chalky Cortex)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Glauconite (Sandstone or Shale)
Glauconite (K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2
Chert (Cherty Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (often called Flint when dark)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline or cryptocrystalline quartz (SiO2)
Banded Chert
Microcrystalline Quartz (SiO2)
Chert (Nodule)
Microcrystalline or Cryptocrystalline Quartz (SiO2)