Red Jasper
Jasper (a variety of Chalcedony, SiO₂ with iron oxide inclusions)
Mineral
Category
Sedimentary Rock (Specifically A Clastic Sedimentary Rock Formed Into A Cobble)
Browse sedimentary rock (specifically a clastic sedimentary rock formed into a cobble) specimens identified by the Rock Identifier community.
Chert (and Chert Flake)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Quartzite Pebble
Quartzite (primarily SiO2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Greenstone with Quartz Veining
Epidiorite or Metabasalt with SiO2 (Quartz) veins
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Basalt with Amygdaloidal Inclusions
Aphanitic Mafic Volcanic Rock (Basalt)
igneous
Brachiopod Fossil in Limestone
Phylum Brachiopoda (likely Order Spiriferida), CaCO3 (Calcite)
sedimentary
Chalcedony in Limestone Host Rock
Silicon Dioxide (SiO2) within Calcium Carbonate (CaCO3)
Mineral within Sedimentary Rock
Red Granite
Granite (Felsic Plutonic Rock)
igneous
Quartzite
Silicon Dioxide (SiO2)
metamorphic
Limestone Breccia
Sedimentary Breccia (Calcareous)
sedimentary
Limestone (with Iron-Oxide staining)
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Chert
Microcrystalline Quartz (SiO2)
sedimentary
Geode (Unopened)
Silicon Dioxide (SiO2) in sedimentary vugs
sedimentary
Jasper Chert Nodules
Silicon Dioxide (SiO2) with Hematite impurities
sedimentary
Blue Chalcedony
Silicon Dioxide (SiO2)
mineral
Chert (Chalcedony/Agate variety)
Silicon Dioxide (SiO2)
sedimentary
Agate with Druzy Quartz
Silicon Dioxide (SiO2)
mineral
Ferruginous Quartzite (Red Quartz)
Quartzite (SiO2 with Hematite/Iron impurities)
metamorphic
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Glauconitic Sandstone
Glauconitic Sandstone (contains (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2)
sedimentary
Sandstone
Arenite (general term for sandstone)
Sedimentary Rock
Dalmatian Stone (commonly Dyed)
Dalmatian Jasper (Peralkaline igneous rock)
igneous
Pyrite in Shale
Iron Disulfide (FeS2) in Argillaceous Shale
sedimentary
Chert (and Flint variant)
Microcrystalline Quartz (SiO2)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Riverstone (Water-worn Quartzite)
Quartzite (SiO2)
metamorphic
Limonite (Iron-rich Siltstone / Sandstone base)
Hydrous ferric oxide mixture (FeO(OH)·nH2O)
sedimentary
Sandstone (Ferruginous)
Arenite (Fe-oxide cemented)
sedimentary
Chert (Flint/Jasper variety)
Microcrystalline Quartz (SiO2)
sedimentary
Pink Granite
Phaneritic Felsic Igneous Rock
igneous
Fossiliferous Chert with Brachiopod Impression
Chert (SiO2) containing Brachiopoda fossil remains
sedimentary
Chert (Quartz Variety)
Chert (mostly SiO2 / Silicon Dioxide)
sedimentary
Hag Stone
Siltstone or Fine-grained Sandstone with boring (e.g., Lithophaga impact)
sedimentary
Chert (often called Flint or Jasper)
Chert (Microcrystalline or Cryptocrystalline Silica, SiO2)
sedimentary
Chert (with Quartz Vein)
Microcrystalline silica (SiO2)
sedimentary
Ironstone Concretion (Nutstone)
Ironstone (with High Limonite/Hematite Content)
sedimentary
Granodiorite (foreground) and Rose Quartz (background)
Granodiorite / Quartz (SiO2)
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Blue Chalcedony
Silicon Dioxide (SiO2) - Microcrystalline Quartz
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral