Chalcedony Geode
Chalcedony (SiO2) within a geode structure
Category
Browse sedimentary like (industrial composite) specimens identified by the Rock Identifier community.
Chalcedony Geode
Chalcedony (SiO2) within a geode structure
Banded Agate (Chert/Chaldcedony)
Silicon Dioxide (SiO₂)
Chert (Flint)
Chert (SiO2)
Emerald
Beryl (Be₃Al₂Si₆O₁₈), specifically the green variety colored by trace amounts of chromium or vanadium.
Sandstone
Arenite
Sandstone
Arenite
Banded Iron Formation (Jasper-grade)
Banded Iron Formation (BIF) containing Hematite/Magnetite and Chert (SiO2)
Mookaite Jasper
Silicon Dioxide (SiO2) - Radiolarite
Sandstone (with garnet granules)
Clastic sedimentary rock (primarily SiO2 with Fe3Al2(SiO4)3 inclusions)
Geode (Unopened)
Silica-rich Concretion (primarily SiO2)
Jasper with Epidote Vein
Silicon Dioxide (SiO2) with Calcium Aluminum Iron Silicate (Ca2(Al,Fe)3(SiO4)3(OH))
Banded Agate (Geode Fragment)
Silicon Dioxide (SiO2) - Variety Agate
Sandstone
Arenite (primarily SiO2)
Iron Slag
Ferrous Slag (Silicate/Oxide mixture)
Chert (Nodule)
Microcrystalline Silica (SiO2)
Limonite (Iron Stone Concretion)
Limonite (Hydrous Iron Oxide) - FeO(OH)·nH2O
Agate
Silicon dioxide (SiO2)
Limonite stained Sandstone
Sedimentary rock with Goethite/Limonite (FeO(OH)·nH2O)
Conglomerate
Conglomerate (Detrital sedimentary rock)
Conglomerate
Conglomerate (clastic sedimentary rock)
Geode (unopened)
Calcedony-lined Geode (SiO2)
Ruby in Kyanite
Corundum in Disthene (Al2SiO5 + Al2O3)
Aquamarine
Beryl (Be3Al2Si6O18 with iron impurities)
Stromatolite
Biogenic Sedimentary Rock (composed predominantly of CaCO3)
Dalmatian Jasper / Dalmatian Stone
Peralkaline Rock (Silicon Dioxide with Amphibole inclusions)
Quartz Geode
Silicon Dioxide (SiO2)
Petrified Wood
Silicified Wood (SiO2)
Garnetiferous Quartzite (Garnet Gneiss Pebble)
Garnet-bearing Quartzite or Quartz-Feldspar Gneiss
Rough Quartz (var. Citrine or Yellow Quartz)
Silicon Dioxide (SiO2)
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite (primarily SiO2)
Sandstone (Ferruginous Concretion)
Ferruginous Sandstone Concretion / SiO2 with Fe2O3 cement
Quartz Geode
Silicon Dioxide (SiO2)
Jasper
Silicon dioxide (SiO2) with impurities
Blue Calcite
Calcium Carbonate (CaCO3)
Chert (Nodule)
Silicon Dioxide (SiO2)
Sandstone with Quarzite clasts
Arenite (SiO2 based)
Sandstone (likely Quartzose Sandstone)
Arenite (composed primarily of SiO2)
Red Sandstone (Iron-Rich)
Arenite (Fe2O3)
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3/FeO(OH)) inclusions
Satin Spar (Gypsum)
Calcium Sulfate Dihydrate (CaSO4·2H2O)
Sandstone
Arenite (SiO2 based with various cements)