Botryoidal Agate / Chalcedony Geode
Silicon Dioxide (SiO2)
mineral
Category
Mineral, Often Found In Sedimentary Deposits
Browse mineral, often found in sedimentary deposits specimens identified by the Rock Identifier community.
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Quartz (Agate/Chalcedony)
Silicon Dioxide (SiO2)
mineral
Rhodonite
Inosilicate (Mn,Fe,Mg,Ca)SiO3
mineral
Yellow Quartz (Citrine / Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Gold Nugget
Native Gold (Au)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Limonite/Goethite Concretion
Hydrated Iron(III) Oxide-hydroxide (FeO(OH)·nH2O)
sedimentary
Quartz (Tumbled Peach/Pink Quartz)
Silicon Dioxide (SiO2)
mineral
Grey Banded Agate
Silicon Dioxide (SiO2)
sedimentary
Rhodochrosite
Manganese Carbonate (MnCO3)
mineral
Quartz (Yellow / Citrine Quartz Pebble)
Silicon Dioxide (SiO2)
mineral
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Banded Agate
Cryptocrystalline Quartz (SiO2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Gold Nugget
Native Gold (Au)
mineral
Sandstone
Arenite (SiO2 based)
sedimentary
Jasper or Agate pendant
Silicon dioxide (SiO2)
Mineral
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Black Sand (Magnetite/Heavy Mineral Concentrate)
Magnetite-rich Placers (Fe3O4)
sedimentary
Milky Quartz
Silicon dioxide (SiO2)
mineral
Selenite (Satin Spar)
Gypsum (CaSO4·2H2O)
mineral
Magnetite Sand (Black Sand)
Magnetite (Fe3O4)
mineral
Pyrite in Host Rock
Iron Disulfide (FeS2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Galena
Lead Sulfide (PbS)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Barite
Barium Sulfate (BaSO4)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Blue Apatite
Apatite, Ca5(PO4)3(F,Cl,OH)
mineral
Gossan (Limonite/Ironstone)
Hydrated Iron Oxide (FeO(OH)·nH2O)
sedimentary
Iron Concretion
Limonite or Hematite Concretion
sedimentary
Carnelian (Tumbled)
Silicon Dioxide (SiO2)
mineral
Red Jasper
Silicon Dioxide with Iron Oxide (SiO2)
sedimentary
Likely pyrite (“fool’s gold”) fragment
Pyrite, FeS₂
mineral
Fancy Jasper
Jasper (Cryptocrystalline Quartz, SiO2)
sedimentary
Poppy Jasper
Microcrystalline Quartz (SiO2) with mineral inclusions
sedimentary
Agate (Chalcedony)
Silicon Dioxide (SiO2)
mineral
Chalcedony (Agate / Moss Agate)
Silicon Dioxide (SiO2)
mineral
Chert Nodule
Microcrystalline Quartz
sedimentary
Zebra Jasper
Silicified sedimentary rock (SiO2) with mineral inclusions
sedimentary