Conglomerate
Conglomerate (clastic sedimentary rock)
Category
Browse mineral on sedimentary specimens identified by the Rock Identifier community.
Conglomerate
Conglomerate (clastic sedimentary rock)
Weathered iron-rich sandstone or lateritic rock
Quartz-rich sandstone with iron-oxide/hydroxide cement; possible goethite-bearing laterite
Jasper and Chalcedony
Silicon Dioxide (SiO2) microcrystalline quartz
Jasper and Chalcedony Composite
Silicon Dioxide (SiO2) microcrystalline quartz
Milky Quartz
Silicon Dioxide (SiO2)
Sandstone
Arenite (SiO2 primarily)
Jasper and Agate Mix
Silicon dioxide (SiO2) - Microcrystalline Quartz
Sandstone with Iron Concretion
Arenite with Limonite/Goethite Concretion
Sandstone
Arenite (SiO2 principal)
Hag Stone
Perforated sedimentary rock (typically sandstone or limestone)
Shale
Clastic sedimentary rock (primarily clay and silt minerals)
Sandstone with Manganese Dendrites
Arenite (mostly SiO2) with Manganese Oxide inclusions (MnO2)
Raw Fluorite
Calcium Fluoride (CaF2)
Sulfur (on Matrix)
Native Sulfur (S8)
Geode (Quartz / Chalcedony Geode)
SiO2 (Silicon Dioxide)
Gneiss (River Cobble)
Gneiss
Goethite/Hematite Nodule
Goethite (FeO(OH)) and Hematite (Fe2O3)
Druzy Quartz on Ironstone
Silicon Dioxide (SiO2) on Limonitic Ironstone
Sandstone Concretion (Omar or Nut Rock)
Sedimentary Concretion (specifically an 'Omarolluk' or Omar)
Sandstone
Arenite (SiO2 dominant)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Gneiss
Gneiss (High-grade metamorphic rock)
Potassium Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
Fossil Shell (Bivalve)
Class Bivalvia (fossilized)
Ironstone Concretion / Chert Nodules
Iron-rich Sedimentary Concretion (Fe2O3 / SiO2 mix)
Magnetite Ore
Magnetite (Fe3O4)
Quartz Geode
Silicon dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Limonite
FeO(OH)·nH2O
Limonite / Goethite (Ironstone Nodule)
Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)
Pink Granite Gneiss
Gneiss (High-grade metamorphic rock)
Sandstone
Clastic sedimentary rock
Sandstone / Quartzite
Sedimentary quartz arenite
Shale
Argillaceous sedimentary rock
Shark Tooth Fossil
Vertebrate fossilized tooth (various genera such as Carcharodon, Otodus, or Negaprion)
Quartz Geode
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
Pyrite
Iron Sulfide (FeS2)
Sandstone
Clastic Sedimentary Rock (Quartz arenite)
Sandstone
Clastic sedimentary rock (Quartz arenite)
Blue Apatite
Ca5(PO4)3(F,Cl,OH)