Rock Identifier

Category

Sedimentary (If Natural Jasper) Or Artificial (If Slag)

Browse sedimentary (if natural jasper) or artificial (if slag) specimens identified by the Rock Identifier community.

Tiger's Iron (Pseudomorphic Quartz Aggregate (contains SiO2 with Fe2O3 and FeOOH)) — metamorphic

Tiger's Iron

Pseudomorphic Quartz Aggregate (contains SiO2 with Fe2O3 and FeOOH)

Chert (Flint) (Microcrystalline Opaline Silica (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline Opaline Silica (SiO2)

Chert (Jasper variation) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper variation)

Microcrystalline Quartz (SiO2)

Jasper (likely Lake Superior Jasper) (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary (silica-rich mineral variety)

Jasper (likely Lake Superior Jasper)

Silicon Dioxide (SiO2) with iron oxide inclusions

sedimentary (silica-rich mineral variety)

Chert Nodule (Microcrystalline Silica (SiO2)) — sedimentary

Chert Nodule

Microcrystalline Silica (SiO2)

Jasper (specifically variegated or swamp jasper beads) (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — sedimentary

Jasper (specifically variegated or swamp jasper beads)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Jasper (specifically Yellow and Red Jasper/Chert) (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — sedimentary

Jasper (specifically Yellow and Red Jasper/Chert)

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Clear Quartz (Rock Crystal Fragments) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz (Rock Crystal Fragments)

Silicon Dioxide (SiO2)

Carnelian (Carnelian (SiO2 with Iron Oxide impurities)) — mineral

Carnelian

Carnelian (SiO2 with Iron Oxide impurities)

Sandstone (Arenite (SiO2 based clastic rock)) — sedimentary

Sandstone

Arenite (SiO2 based clastic rock)

Glauconitic Sandstone (or Greensand) (Glauconitic Siliciclastic Rock (Containing (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2)) — sedimentary

Glauconitic Sandstone (or Greensand)

Glauconitic Siliciclastic Rock (Containing (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2)

Asphalt (Road Aggregate) (Asphalt concrete / Bituminous mixture) — anthropogenic sedimentary (technolith)

Asphalt (Road Aggregate)

Asphalt concrete / Bituminous mixture

anthropogenic sedimentary (technolith)

Yellow Chert or Jasper (Silicon Dioxide (SiO2)) — sedimentary

Yellow Chert or Jasper

Silicon Dioxide (SiO2)

Chert / Flint (Silicon Dioxide (SiO2)) — sedimentary

Chert / Flint

Silicon Dioxide (SiO2)

Jasper (Iron-rich Chalcedony) (Jasper (Microcrystalline Silicon Dioxide, SiO2 plus iron oxide impurities)) — Sedimentary / Metamorphic

Jasper (Iron-rich Chalcedony)

Jasper (Microcrystalline Silicon Dioxide, SiO2 plus iron oxide impurities)

Sedimentary / Metamorphic

Chert (Jasper variety) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Chert (specifically Jasper) (Silicon dioxide (SiO2) with iron oxide inclusions) — sedimentary

Chert (specifically Jasper)

Silicon dioxide (SiO2) with iron oxide inclusions

Chert (varieties include Flint and Jasper) (Microcrystalline or cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (varieties include Flint and Jasper)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Fluorite (Blue) (Calcium Fluoride (CaF2)) — mineral

Fluorite (Blue)

Calcium Fluoride (CaF2)

Bloodstone (Heliotrope (cryptocrystalline Quartz, SiO2 with inclusions of Hematite)) — sedimentary

Bloodstone

Heliotrope (cryptocrystalline Quartz, SiO2 with inclusions of Hematite)

Chert (Arrowhead variety) (Chert (SiO2)) — sedimentary

Chert (Arrowhead variety)

Chert (SiO2)

Bumble Bee Jasper (Calcite-bearing Volcanic Tuff (not a true Jasper)) — sedimentary

Bumble Bee Jasper

Calcite-bearing Volcanic Tuff (not a true Jasper)

Chert (Jasper variety) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Chert (Flint nodule) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Flint nodule)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Red Jasper (Tumbled) (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Red Jasper (Tumbled)

Silicon Dioxide (SiO2) with iron oxide inclusions

Jasper with Quartz inclusions (Silicon Dioxide (SiO2) - Microcrystalline Chalcedony) — sedimentary

Jasper with Quartz inclusions

Silicon Dioxide (SiO2) - Microcrystalline Chalcedony

Chert (Yellow Jasper variant) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Yellow Jasper variant)

Silicon Dioxide (SiO2)

Jasper with Hematite inclusions (Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3)) — sedimentary

Jasper with Hematite inclusions

Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3)

Yellow Jasper (Chert variant) (Silicon Dioxide (SiO2)) — sedimentary

Yellow Jasper (Chert variant)

Silicon Dioxide (SiO2)

Red Jasper (Tumbled) (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Red Jasper (Tumbled)

Silicon Dioxide (SiO2) with iron oxide inclusions

Chert (Iron-Stained) (Microcrystalline Silica (SiO2)) — sedimentary

Chert (Iron-Stained)

Microcrystalline Silica (SiO2)

Shiva Lingam (Cryptocrystalline Quartz (Jasper/Chalcedony) with Iron Oxide inclusions) — sedimentary

Shiva Lingam

Cryptocrystalline Quartz (Jasper/Chalcedony) with Iron Oxide inclusions

Jasper (Willow Creek/Desert style) (Silicon Dioxide (SiO2) with iron and clay impurities) — sedimentary

Jasper (Willow Creek/Desert style)

Silicon Dioxide (SiO2) with iron and clay impurities

Jasper (Iron-stained) (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Jasper (Iron-stained)

Silicon Dioxide (SiO2) with iron oxide inclusions

Fluorite (Rainbow Fluorite Point) (Calcium Fluoride (CaF2)) — mineral

Fluorite (Rainbow Fluorite Point)

Calcium Fluoride (CaF2)

Yellow Quartz (Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Chalcedony)

Silicon Dioxide (SiO2)

Red Jasper (SiO2 (Silicon Dioxide with Iron Oxide inclusions)) — sedimentary/mineral

Red Jasper

SiO2 (Silicon Dioxide with Iron Oxide inclusions)

sedimentary/mineral

Chert (Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert (Iron-stained) (Microcrystalline silica (SiO2) with trace Iron oxide (Fe2O3)) — sedimentary

Chert (Iron-stained)

Microcrystalline silica (SiO2) with trace Iron oxide (Fe2O3)

Chert (often called Flint or Jasper) (Microcrystalline silica (SiO2)) — sedimentary

Chert (often called Flint or Jasper)

Microcrystalline silica (SiO2)

Chert (Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Chert / Flint (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert / Flint

Microcrystalline or Cryptocrystalline Quartz (SiO2)