Chert (Jasper-like Silicate)
Microcrystalline Quartz (SiO2)
Category
Browse sedimentary (secondary classification for a weathered mineral specimen) specimens identified by the Rock Identifier community.
Chert (Jasper-like Silicate)
Microcrystalline Quartz (SiO2)
Chert (Jasper)
Microcrystalline Quartz (SiO2)
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
Quartz Geode Fragment
Silicon Dioxide (SiO2)
Banded Agate
Silicon Dioxide (SiO2) - Chalcedony variety
Coquina or Fossilized Shell Fragment
Calcium Carbonate (CaCO3) / Biogenic Limestone
Chert / Flint
Chert (SiO2)
Quartzite Cobble
Quartzite (composed primarily of SiO2)
Chrysocolla on Limonite Matrix
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla) on FeO(OH)·nH2O (Limonite)
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Gold-bearing Quartz with Iron Oxides
Quartz (SiO2) with Limonite/Goethite (FeO(OH)) and Pyrite (FeS2)
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
Sandstone (with Quartz veining)
Arenite (primarily SiO2)
Quartz (White/Milky)
Silicon Dioxide (SiO2)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Chert (Nodule)
Microcrystalline Quartz (SiO2)
Jasper
Chalcedony (Microcrystalline Quartz) - SiO2
Dyed Blue Agate
Silicon Dioxide (SiO2)
Chert (variations include Flint or Jasper)
Silicon Dioxide (SiO2)
Chert (Iron-stained)
Microcrystalline quartz (SiO2)
Chert (Chert Nodule)
Silicon Dioxide (SiO2)
Green Calcite
Calcium Carbonate (CaCO3)
Botryoidal Goethite
Goethite (α-Fe3+O(OH))
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
Nickel
Nickel (Ni)
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Sandstone (River Rock)
Arenite (composed primarily of SiO2)
Malachite
Copper(II) carbonate hydroxide, Cu2CO3(OH)2
Optical Calcite (Iceland Spar)
Calcium Carbonate (CaCO3)
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
Chrysocolla
Hydrated copper silicate (Cu,Al)2H2Si2O5(OH)4·n(H2O)
Blue Chalcedony
Silicon Dioxide (SiO2)
Limestone with Fossil Impression
Calcium Carbonate (CaCO3)
Fossiliferous Limestone
Fossiliferous Limestone (Sedimentary Rock)
Ironstone Concretion
Siderite or Hematite-bonded Concretion
Fossilized Shark Tooth
Elasmobranchii (Class) fossil
Turquoise
CuAl6(PO4)4(OH)8·4H2O
Agate
Banded Chalcedony (SiO2 - Silicon Dioxide)
Agate
Silicon Dioxide (SiO2) - variety Chalcedony
Iridium sand or Osmium-Iridium nugget
Iridosmine / Osmiridium (Platinoid grouping)
Limonite (Ironstone)
Limonite (Hydrated iron(III) oxide-hydroxide, FeO(OH)·nH2O)
Agate
Silicon Dioxide (SiO2) - Chalcedony variety