Jasper and Chalcedony
Silicon Dioxide (SiO2) microcrystalline quartz
sedimentary
Category
Mineral Within A Sedimentary Rock
Browse mineral within a sedimentary rock specimens identified by the Rock Identifier community.
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Sandstone Chert Concretion
Silica-cemented Concretion (primarily SiO2)
sedimentary
Red Sandstone
Arenite (Iron-rich)
sedimentary
Travertine (or Calcareous Tufa)
Calcium Carbonate (CaCO3)
sedimentary
Sandstone Pebble
Arenite (SiO2 based)
sedimentary
Quartz Druzy (on Matrix)
Silicon Dioxide (SiO2)
mineral
Quartz Veined Mudstone
Metasedimentary rock with Quartz (SiO2) veins
metamorphic
Pyrite in Shale
Iron Disulfide (FeS2)
mineral
Quartz Geode (River Cobble)
Silicon Dioxide (SiO2)
mineral
Ironstone Concretion (Limonite/Goethite)
Ironstone (composed primarily of Goethite FeO(OH) and Limonite)
sedimentary
Fossil-bearing Sedimentary Rock
Sedimentum cum fossili
fossil
Quartz Vein in River Siltstone
Crystalline Quartz (SiO2) in Siliclastic Matrix
sedimentary
Sandstone Cobble with Iron Staining
Arenite with Limonite/Hematite staining
sedimentary
Quartz (Druzy)
Silicon Dioxide (SiO2)
mineral
Weathered Sedimentary Rock with Liesegang Rings
Sandstone or Siltstone with Iron Oxide Banding
sedimentary
Sandstone (with Concretion)
Arenite / Quartzose Sandstone
sedimentary
Quartz Geode
Silicon Dioxide (SiO2) within a geode
mineral
Dalmatian Jasper / Dalmatian Stone
Peralkaline Rock (Silicon Dioxide with Amphibole inclusions)
igneous
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Snakeskin Jasper
Microcrystalline Quartz (SiO2) with iron inclusions
sedimentary
Chert (Yellow Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Claystone Concretion
Septarian Concretion (Ironstone-rich)
sedimentary
Quartz Geode
Crystalline Silicon Dioxide (SiO2) in Geode
mineral
Quartz Geode
Silicon Dioxide (SiO2) within a sedimentary or volcanic shell
mineral
Metaconglomerate
Metaconglomerate (Quartzite conglomerate)
metamorphic
Herkimer Diamond
Quartz (Silica - SiO2)
mineral
Agate (Carnelian Agate with Quartz Matrix)
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (primarily SiO2)
sedimentary
Quartz Geode
Silicon Dioxide (SiO2) within a geode
mineral
Quartz Geode Fragment
Silicon Dioxide (SiO2)
sedimentary
Concretion in Shale
Siltstone/Shale with Siderite or Calcareous concretions
sedimentary
Weathered sandstone or limestone fragment
Likely quartz-rich sandstone or micritic limestone; exact identification requires testing
sedimentary
Sandstone with Concretions / Liesegang Rings
Arenite with iron oxide banding
sedimentary
Cannonball Concretion
Calcite-cemented Sandstone Concretion
sedimentary
Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Agate Geode
Silicon Dioxide (Chalcedony/Quartz), SiO2
sedimentary
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Fluorite Geode
Calcium Fluoride (CaF2)
mineral
Quartz Geode
Silicon Dioxide (SiO2) within Sedimentary or Igneous host
mineral
Quartz Geode Fragment
Silicon Dioxide (SiO2)
mineral
Yellow Ocher (Iron-rich Silt/Clay)
Goethite-rich Limonite (FeO(OH)qnH2O)
sedimentary
Weathered sandstone or limestone fragment
Likely quartz-rich sandstone or calcitic limestone; exact identification is uncertain from the image
sedimentary