Quartz Geode Fragment
Silicon Dioxide (SiO2)
Category
Browse mineral on sedimentary rock specimens identified by the Rock Identifier community.
Quartz Geode Fragment
Silicon Dioxide (SiO2)
Quartz in Limonite-rich Matrix
Silicon Dioxide (SiO2) with Goethite/Limonite FeO(OH)·nH2O
Sandstone (Quartzose)
Arenite (primarily SiO2)
Sandstone (likely Quartzose Sandstone)
Arenite (composed primarily of SiO2)
Sandstone (Ferruginous)
Arenite (Fe2O3 stained)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Iron Oxide staining)
Sandstone (Weathered Cobble)
Clastic Sedimentary Rock (primarily SiO2)
Plume Agate
Silicon Dioxide (SiO2)
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2)
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
Sandstone (Ferruginous)
Arenite (Fe2O3 rich)
Sandstone
Arenite (Siliclastic sedimentary rock)
Sandstone
Arenite
Sandstone (Ferruginous/Banded)
Clastic Terrigenous Sandstone (SiO2 with Fe2O3 cement)
Sandstone
Clastic Sedimentary Rock (composed mostly of quartz, SiO2)
White Quartz Pebble
Silicon Dioxide (SiO2)
Sandstone (likely Graywacke or Arkose variant)
Clastic Sedimentary Rock (Lithic Sandstone)
Garnet Schist
Almandine Garnet Schist (Fe3Al2(SiO4)3 in Schistose matrix)
Agate with Druzy Quartz
Silicon Dioxide (SiO2)
Sandstone Pebbles
Arenite (Sedimentary rock composed of sand-sized grains)
Sandstone (likely Quartzose)
Sandstone (Principally SiO2)
Moqui Marble (Shaman Stone)
Iron Oxide Concretion (Goethite/Hematite shell with Sandstone core)
Sandstone
Arenite (SiO2 predominantly)
Boxwork Siderite or Sepatarian Nodule Weathering
Siderite (FeCO3) with secondary mineralization or Boxwork Geode fragment
Sandstone
Arenite (primarily SiO2)
Quartz Geode
Silicon Dioxide (SiO2) in Geode form
Limestone
Calcium Carbonate (CaCO3)
Druzy Quartz on Limestone
Silicon Dioxide (SiO2)
Sandstone (Red/Brown Variety)
Arenite (SiO2 with iron oxide impurities)
Dalmatian Stone
Peralkaline Feldsphathic Igneous Rock
Quartz (likely Herkimer Diamond style)
Silicon Dioxide (SiO2)
Sandstone with Liesegang Rings
Arenite with Iron Oxide Concretions
Clear Quartz Crystal
Quartz (Silicon Dioxide, SiO2)
Sandstone
Arenite (SiO2 principal)
Sandstone
Arenite
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
Ferruginous Sandstone
Arenite with Iron-oxide cement
Sandstone (Ferruginous)
Sandstone (mainly SiO2 with Fe2O3 staining)
Gneiss
High-grade Metamorphic Gneiss
Collection of Minerals and Ores
Various (e.g., Uraninite (U3O8), Carbon (C), Native Gold (Au), Hematite (Fe2O3), Galena (PbS), etc.)
Sandstone
Arenite (SiO2 predominantly)
Sandstone
Arenite (SiO2 based)