Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Category
Mineral (Silicate Replaced Organic Material)
Browse mineral (silicate replaced organic material) specimens identified by the Rock Identifier community.
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Chert
Microcrystalline Quartz (SiO2)
sedimentary
Chert / Flint
Silicon Dioxide (SiO2)
sedimentary
Chert Nodule (with Geode cavity)
Cryptocrystalline Quartz (SiO2)
sedimentary
Flint (Chert)
Cryptocrystalline Quartz (SiO2)
sedimentary
Black Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)
metamorphic
Garnet (Pyrope or Almandine)
Silicate (X3Y2Si3O12)
mineral
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Flint)
Chert (Silicon Dioxide, SiO2)
sedimentary
Chert (Flinty variety)
Microcrystalline Quartz (SiO2)
sedimentary
Gastropod Fossil (Snail Steinkern)
Class Gastropoda (internal mold)
sedimentary
Petoskey Stone
Hexagonaria percarinata (Fossilized Coral)
sedimentary
Chert (varieties include Flint and Jasper)
Microcrystalline or Cryptocrystalline Silicon Dioxide (SiO2)
sedimentary
Blue Topaz
Al2SiO4(F,OH)2 (Aluminum silicate fluoride hydroxide)
gemstone
Chert Arrowhead (Projectile Point)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
sedimentary
Chert / Microcrystalline Quartz
Silicon Dioxide (SiO2)
sedimentary
Chert Nodule (Flint)
Chert (Cryptocrystalline Silica - SiO2)
sedimentary
Diorite
Intrusive Igneous Diorite (intermediate composition)
igneous
Tiger's Eye
Titanium-containing Quartz (Silica: SiO2)
Mineral
Turquoise and Red Coral
Turquoise: CuAl6(PO4)4(OH)8·4H2O; Red Coral: Corallium rubrum (organic gemstone)
mineral
Sandstone (Ferruginous)
Arenite with Iron-Oxide cement
sedimentary
Chert (specifically Flint or Nodular Chert)
Silicon dioxide (SiO2)
sedimentary
Chert (and Chalcedony)
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone (Ferruginous)
Arenite (with Iron Oxide)
sedimentary
Jasper and Quartz River Pebble
Silicon Dioxide (SiO2) with impurities
sedimentary
Chert (Nodule)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
sedimentary
Mookaite Jasper
Silicified Radiolarite (SiO2)
sedimentary
Amber (Copal)
Fossilized Tree Resin
mineraloid
Mineral and Rock Collection (Assorted)
Mixed collection including Quartz (SiO2), Jasper (SiO2 with impurities), Rose Quartz, and Aventurine
mineral
Chert (specifically Green Chert/Jasper)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
sedimentary
Chert (Jasper)
Silicon dioxide (SiO2)
sedimentary
Slag (Industrial Glass/Metal)
Ferrous slag or Glassy silicate byproduct
Antropogenic rock (Man-made)
Chert (Nodule)
Silicon Dioxide (SiO2)
sedimentary
Larimar
NaCa2Si3O8(OH)
gemstone
Chrysocolla on Matrix
Hydrated copper silicates ((Cu,Al)2H2Si2O5(OH)4·nH2O)
mineral
Chert
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Jasper/Chalcedony)
Microcrystalline Quartz (SiO2)
sedimentary
Chert
Microcrystalline Quartz (SiO2)
sedimentary
Fossilized Shark Tooth
Carcharodon (Galeocerdo sp. or Lamniform)
mineral