Bumblebee Jasper
Fossiliferous Calcite containing Orpiment and Realgar
Category
Browse sedimentary rock (possibly conglomerate or breccia with a quartz vein) specimens identified by the Rock Identifier community.
Bumblebee Jasper
Fossiliferous Calcite containing Orpiment and Realgar
Milky Quartz (with trace inclusions)
Silicon Dioxide (SiO2)
Emerald in Matrix (Quartz/Schist)
Beryl (Be₃Al₂Si₆O₁₈) with Chromium/Vanadium impurities
Jasper (Zebra Jasper)
Silicon Dioxide (SiO2) with impurities
Quartz Geode
Silicon Dioxide (SiO2)
Carnelian
Chalcedony (cryptocrystalline quartz), SiO2
Greywacke (likely)
Greywacke (a type of sandstone)
Ferruginous Sandstone
Arenite with Iron-Oxide Cement (FeO(OH)·nH2O / Fe2O3)
Quartz / River Cobble
Silicon Dioxide (SiO2)
Orbicular Rhyolite (Rainforest Jasper)
Rhyolite containing Spherulites (SiO2 with impurities)
Granitic Gneiss
Gneiss (containing Potassium Feldspar and Quartz)
Gneiss
Gneiss
Clear Quartz
Silicon Dioxide (SiO2)
Jasper (Imperial Jasper style)
Silicon Dioxide (SiO2) with impurities
Petrified Wood
Silicified Wood (primarily SiO2)
Greenstone
Metabasalt (Greenstone Facies)
Gold
Native Gold (Au)
Graywacke
Lithic Sandstone (Graywacke)
Amethyst
Silicon dioxide (SiO2) with iron impurities
Chert (Yellow Jasper variant)
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Red Sandstone
Clastic Terrigenous Sedimentary Rock (composed mostly of SiO2 with Fe2O3)
Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Gneiss
High-grade metamorphic rock (Gneiss)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Sandstone (Quartzose Sandstone)
Clastic sedimentary rock (primarily SiO2)
Tree Agate
Silicon Dioxide (SiO2) - Dendritic Agate/Chalcedony
Gneiss
Gneiss (High-grade Metamorphic Rock)
Sandstone (Ferruginous)
Ferruginous Sandstone (SiO2 with iron oxide cement)
Quartz on Limestone
Silicon Dioxide (SiO2) on Calcium Carbonate (CaCO3)
Gneiss
Gneiss (High-grade metamorphic rock)
Red Sandstone
Arenite (with Iron Oxide)
Kambaba Jasper
Stromatolite (Fossilized Algae)
Chert (varietal Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Limonitic Sandstone (Stained Sandstone)
Clastic Sedimentary Rock with Iron Oxide (Limonite/Goethite) staining
Quartz (Common or Milky)
Silicon Dioxide (SiO2)
Ferruginous Chert
Microcrystalline Quartz (SiO2) with Iron Oxides
Amethyst with Marcasite accents
Amethyst (Silicon Dioxide SiO2) and Marcasite (Iron Sulfide FeS2)
Chert (Arrowhead or Projectile Point)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Jasper, Agate, Quartz Mix (Polished Beads)
SiO₂ (Silicon Dioxide) for Quartz. Jasper and Agate are cryptocrystalline varieties of Quartz.
Geode with Iron-Stained Quartz/Calcite
Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3) in Sedimentary Matrix