Red Chert
Microcrystalline Quartz (SiO2)
Category
Browse mineral on sedimentary rock specimens identified by the Rock Identifier community.
Red Chert
Microcrystalline Quartz (SiO2)
Amygdaloidal Basalt
Amygdaloidal Basalt with Secondary Infilling (e.g., Agate, Quartz, or Zeolite)
Magnetite (Lodestone)
Magnetite (Fe3O4)
Clear Quartz
Silicon Dioxide (SiO2)
Flower Jasper
Agatized Fossil Coral / Chalcedony (SiO2)
Fossilized Turritella Gastropod (Internal Mold)
Turritella (Fossil Gastropod Crust)
Greywacke (River Siltstone)
Lithic Sandstone / Greywacke
Crinaudite / Fossilized Crinoid Stem
Crinoid (Echinodermata) in a Calcitic/Siliceous Matrix
Yellow Jasper
Silicon Dioxide (SiO2) - Impure Cryptocrystalline Quartz
Chert (Common Opal/Agate mixture)
Microcrystalline Quartz (SiO2)
Jasper
Jasper (Silicon Dioxide, SiO2)
Quartz
Silicon Dioxide (SiO2)
Limestone
Calcium Carbonate (CaCO3)
Agate Geode
Silicon Dioxide (SiO2) - variety Chalcedony/Quartz
Jasper (Iron-stained Quartzite/Chert)
Silicon Dioxide (SiO2) with iron oxide inclusions
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Dalmatian Jasper (Dalmatian Stone)
Peralkaline rhyolite
Sandstone (likely Ferruginous)
Arenite (SiO2 based with Fe2O3/FeO(OH) cement)
Chert (Jasper variation)
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Wishing Stone
Greenschist or Basalt with Quartz/Calcite Vein
Bumblebee Jasper
Volcanic Tuff (mixture of Quartz, Sulfur, Hematite, and Orpiment)
Basalt with Calcite Veins
Aphanitic mafic volcanic rock with CaCO3 inclusions
Serpentinite (often called Jade or Nephrite substitute)
Serpentinite (composed primarily of Antigorite, Lizardite, or Chrysotile)
Milky Quartz
Silicon Dioxide (SiO2)
Blue Sapphire
Corundum (Al2O3)
Quartz Pebble
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz Pebble
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Granite (Fine-grained)
Phaneritic Felsic Igneous Rock
Red Jasper
Jasper (Silicon Dioxide, SiO2)
Chert (Nodule)
Silicon Dioxide (SiO2)
Chert (Arrowhead/Artifact Fragment)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Jasper (specifically Red or Brecciated Jasper variant)
Jasper (Microcrystalline Quartz - SiO2)
Yellow Jasper
Jasper (Silicon Dioxide, SiO2)
Red Jasper
Jasper (Silicon Dioxide, SiO2)
Banded Iron Formation (BIF)
Banded Iron Formation
Unakite
Epidotized Granite
Limonite (Iron Ore)
Hydrous Iron Oxide (goethite, lepidocrocite)
Chert (Chalcedony/Agate)
Microcrystalline Quartz (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)