Geode (Unopened)
Silicon Dioxide (SiO2) in sedimentary vugs
Category
Browse mineral on sedimentary rock specimens identified by the Rock Identifier community.
Geode (Unopened)
Silicon Dioxide (SiO2) in sedimentary vugs
Sandstone (Quartzose Sandstone)
Clastic Terrigenous Sedimentary Rock (primarily SiO2)
Dalmatian Stone
Dalmatian Jasper (Aplitic Rock)
Sandstone (likely Calcareous or Quartz-rich)
Arenite (SiO2 based typically)
Sandstone (Ferruginous)
Sandstone (Clastic sedimentary rock, predominantly SiO2 with Fe2O3 cement)
Sandstone
Clastic Sedimentary Rock (composed primarily of Quartz, SiO2)
Pyrite on Limestone
Iron Disulfide (FeS2) in Calcium Carbonate (CaCO3) matrix
Pebble or Cobble (likely composed of sandstone or conglomerate)
Clastic Sedimentary Rock (specific name like sandstone, conglomerate, or breccia would require microscopic analysis of clast size and angularity)
Sandstone (Quartzose Sandstone)
Clastic sedimentary rock (primarily SiO2)
Sandstone (likely Quartz Sandstone)
Arenite (SiO2 based)
Sandstone (Ferruginous)
Arenite (composed primarily of SiO2 with Fe2O3 staining)
Sandstone (River Cobble)
Clastic Sedimentary Rock (primarily Quartz with Feldspar)
Quartz Geode Fragment
Silicon Dioxide (SiO2)
Sandstone (Ferruginous)
Arenite with Iron Oxide cement (SiO2 + Fe2O3)
Milky Quartz
Silicon Dioxide (SiO2)
Dalmation Stone (Dalmation Jasper)
Peralkaline rock (primarily Feldspar and Quartz with Arfvedsonite spots)
Quartz Geode
Quartz (Silicon Dioxide - SiO2) within a Chalcedony and Limonite shell
Sandstone
Arenite (primarily SiO2)
Dalmatian Stone (commonly Dyed)
Dalmatian Jasper (Peralkaline igneous rock)
Sandstone
Arenite (SiO2 based typically)
Shale
Shale (fine-grained clastic sedimentary rock)
Sandstone
Arenite/Quartz Arenite
Banded Sandstone
Arenite with Liesegang banding
Conglomerate
Conglomerate (clastic sedimentary rock)
River Rocks (Basalt and Sedimentary Stones)
Mafic Igneous Rock (Basalt) and Clastic Sedimentary Rock
Sandstone
Arenite (primarily SiO2)
Sandstone (Ferruginous)
Arenite (composed primarily of SiO2 with Fe2O3 cement)
Breccia
Breccia - Clastic sedimentary rock
Sandstone
Arenite (primarily SiO2)
Sandstone (likely Greywacke variant)
Arenite
Sandstone
Arenite (primarily SiO2)
Sandstone (Ferruginous)
Arenite (with high iron oxide content)
Chert Geode or Nodule
Microcrystalline Quartz (SiO2)
Sandstone (Calcareous or Ferruginous)
Clastic sedimentary rock (SiO2 with CaCO3 or Fe2O3 cement)
Ferruginous Sandstone
Arenite with Iron-Oxide cement (Fe2O3 · nH2O)
Sandstone (Pebble)
Arenite (primarily SiO2)
Sandstone
Arenite
Sandstone (Quartzose Sandstone)
Arenite (primarily SiO2)
Sandstone (Stream-rounded)
Arenite (SiO2 based)
Botryoidal Chalcedony (Desert Rose / Agate)
Silicon Dioxide (SiO₂)
Sandstone
Arenite (Siliclastic sedimentary rock)
Gneiss
High-grade metamorphic rock (Gneiss)