Green Fluorite (Beaded)
Fluorite (Calcium Fluoride, CaF2)
Category
Browse mineral on sedimentary specimens identified by the Rock Identifier community.
Green Fluorite (Beaded)
Fluorite (Calcium Fluoride, CaF2)
Fluorite (Rainbow Fluorite Point)
Calcium Fluoride (CaF2)
Druzy Quartz
Silicon Dioxide (SiO2)
Hematite
Iron(III) oxide (Fe2O3)
Hematite
Iron(III) oxide (Fe2O3)
Fluorite
Fluorite (Calcium Fluoride - CaF2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Petrified Wood
Silicified Wood (SiO2 as Quartz/Chert/Chalcedony)
Chert (River Siltstone/Flint)
Chert (SiO2)
Dragon Stone
Ohko Stone (Argillaceous sedimentary rock)
Crinoid Stem Columns (Fossil)
Crinoidea (Class); often composed of the mineral Calcite (CaCO3)
Jasper Conglomerate
Jasper Conglomerate (SiO2 matrix with varying mineral inclusions)
Shale
Shale (composition varies: primarily clay minerals and quartz)
Sandstone (Quartzose Sandstone)
Arenite (primarily SiO2 with minor Fe2O3)
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Chert Geode or Nodule
Microcrystalline Quartz (SiO2)
Bloodstone (Heliotrope)
Silicon Dioxide (SiO2) with inclusions of Chlorite or Actinolite
Geode (unopened)
Chert / Chalcedony Geode (SiO2)
Jasper
Silicon dioxide (SiO2) with impurities
Fossil Shell (Bivalve)
Class Bivalvia (Likely a member of the Ostreidae or Gryphaeidae family), CaCO3
Orbicular Jasper (Eye Jasper / Kambaba-like pattern)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Petrified Wood
Silicified Wood (primarily Quartz/Chalcedony, SiO2)
Yellow Jasper
Jasper (Silicon Dioxide, SiO2)
Schist/Phyllite
Metamorphic Schist (Chlorite Schist variety)
Sandstone (Ferruginous)
Arenite (Fe2O3 dominant staining)
Petrified Wood
Silicified Wood (primarily SiO2)
Dinosaur Fossil (Skull)
Dinosauria fossilis (Petrified Hydroxyapatite / Calcium Carbonate)
Ferruginous Conglomerate (or Iron-Rich Concrete/Slag)
Clastic Sedimentary (Silicon Dioxide/Iron Oxide matrix)
Gneiss (Metamorphic Rock)
Gneiss
Red Sandstone
Clastic Sedimentary Mineraloid (predominantly Quartz grains with Iron Oxide cement)
Sandstone Grain
Clastic Sedimentary Rock Grain (SiO2 dominated)
Ferruginous Sandstone (Grit)
Clastic Sedimentary (Ironstone-rich Sandstone)
Mica Schist
Mica Schist (Schistose metamorphic rock rich in Muscovite/Biotite)
Sandstone
Arenite (primarily SiO2)
Magnetite
Iron(II,III) oxide (Fe3O4)
Quartz
Silicon Dioxide (SiO2)
Honey Calcite
Calcium Carbonate (CaCO3)
Celestine (or Celestite) Geode
Strontium Sulfate (SrSO4)
Clear Quartz (Rock Crystal)
Quartz (Silicon Dioxide, SiO2)
Agate
Silicon Dioxide (SiO2) - variety Chalcedony
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Amethyst Geode
Silicon Dioxide (SiO2) with iron impurities