Aquamarine
Beryl (Be3Al2Si6O18 with Iron traces)
Category
Browse sedimentary (secondary classification for a weathered mineral specimen) specimens identified by the Rock Identifier community.
Aquamarine
Beryl (Be3Al2Si6O18 with Iron traces)
Agate (Geode nodule)
Cryptocrystalline Quartz (SiO2)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
Sandstone
Arenite (primarily SiO2)
Red Sandstone
Arenite with Hematite cementation
Banded Agate
Cryptocrystalline Quartz (SiO2)
Fluorite (Green Fluorite)
Fluorite (Calcium Fluoride, CaF2)
Vanadinite
Vanadinite (Pb5(VO4)3Cl)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Sandstone
Arenite (SiO2 based clastic rock)
Sandstone (with cross-bedding)
Arenite (composed primarily of Quartz: SiO2)
Dendritic Agate (also known as Dendritic Siltstone or Mudstone)
Silicon Dioxide with Manganese/Iron Oxide inclusions (SiO2 + MnO2)
Vesicular Basalt (Scoria)
Vesicular Basalt
Pyrite
Iron Sulfide (FeS2)
Pyrite
Iron Sulfide (FeS2)
Chert (Field Stone)
Chert (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Dyed Pink Agate Slice
Cryptocrystalline variety of Quartz (SiO2)
Green Calcite (Onyx Marble)
Calcium Carbonate (CaCO3)
Quartz Pebble
Silicon Dioxide (SiO2)
Sandstone (Ferruginous)
Arenite (with Iron Oxides)
Ferruginous Sandstone
Arenite with Iron-Oxide Cement (FeO(OH)·nH2O / Fe2O3)
Tiger Iron
Tiger Iron (composite of Tiger's Eye, Red Jasper, and Hematite)
Sandstone (Quartzose)
Arenite (SiO2 principal)
Jasper with Quartz Vein
Silicon Dioxide (SiO2) with impurities
Petrified Wood (Jet or Coalified Wood appearance)
Silicified wood (principally SiO2) or Carbonized Wood
Turquoise
Hydrated phosphate of copper and aluminium, CuAl6(PO4)4(OH)8·4H2O
Quartz Crystal with Inclusions
Silicon Dioxide (SiO2)
Amethyst (Raw Quartz)
Silicon Dioxide (SiO2) with iron impurities
Chert (Common Opal/Agate inclusion)
Microcrystalline Quartz (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Yellow Calcite (Banded Calcite)
Calcium Carbonate (CaCO3)
Red Jasper
Jasper (Silicon Dioxide, SiO2 with Iron Oxide impurities)
Blue Apatite
Apatite-(CaF), Ca5(PO4)3F
Quartz with Iron Stains
Quartz (SiO2) with iron oxide/hydroxide staining
Sandstone (Quartzose Sandstone)
Arenite (primarily SiO2 with minor Fe2O3)
Chalcedony (Agate/Carnelian variant)
Silicon Dioxide (SiO2)
Granodiorite
Granodiorite
Ferruginous Quartz (Iron-stained Quartzite)
Silicon Dioxide (SiO2) with Hematite/Limonite impurities
Rough Dark Green Sapphire
Corundum (Al2O3)
Yellow Calcite
Calcium Carbonate (CaCO3)
Sandstone
Arenite (primarily SiO2)