Beach Pebbles and Quartz Aggregates
Quartz / Calcite Beach Pebbles (SiO2 / CaCO3)
sedimentary
Category
Mineral (Processed Metal)
Browse mineral (processed metal) specimens identified by the Rock Identifier community.
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Aquamarine (Tumbled)
Beryl (Be3Al2Si6O18)
gemstone
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)3(Si, Al, Fe)2O5(OH)4
metamorphic
Cullet Glass (Slag Glass)
Amorphous Silicon Dioxide (Industrial byproduct)
mineraloid
Petrified Wood
Silicified wood (SiO2)
fossil
Blue Quartzite
Quartzite with inclusions (often Dumortierite or Magnesio-riebeckite), SiO2
metamorphic
Jasper with Iron Staining
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) impurities
sedimentary
Red Jasper
Jasper (Silicon Dioxide with Iron Oxide inclusions), SiO2 + Fe2O3
sedimentary
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Petrified Wood
Silicified wood (Quartz variant, SiO2)
sedimentary
Mica Schist
Mica Schist (primarily Muscovite and Biotite phyllosilicates)
metamorphic
Blue Tiger's Eye (Hawk's Eye)
Silicified Crocidolite (Pseudomorph of Quartz after Crocidolite), SiO2
metamorphic
Tiger's Eye
Pseudomorph of quartz after crocidolite (SiO2 with iron inclusions)
metamorphic
Chert (Septarian or Nodular variety)
Microcrystalline Quartz (SiO2)
sedimentary
Unakite
Epidotized Granite
metamorphic
Jasper (Iron-stained)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Moss Agate
Chalcedony (SiO2) with inclusions of hornblende or chlorite
mineral
Barite (Desert Diamond)
Barite (Barium Sulfate, BaSO4)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Ferric Oxide inclusions
mineral
Mixed Gemstones and Minerals
Mixed Silicates and Oxides (Quartz/Amethyst, Aventurine, Sodalite, Chert, Jasper)
mineral
Blue Dyed Agate
Chalcedony (Silicon Dioxide, SiO2)
mineral
Banded Agate
Silicon Dioxide (SiO2) - Variety Agate
mineral
Green Tourmaline (Verdelite)
Na(Li,Al)3Al6(BO3)3Si6O18(OH)4 (Elbaite)
mineral
Golden Calcite
Calcium Carbonate (CaCO3)
mineral
Tiger's Eye
Silicon Dioxide (SiO2) - Pseudomorph of Quartz after Crocidolite
mineral
Aventurine
Aventurine Quartz (SiO2)
mineral
Aura Quartz (Titanium-coated Quartz)
Silicon Dioxide (SiO2) with metallic vapor coating
mineral
Peach Selenite / Orange Gypsum
Calcium Sulfate Dihydrate (CaSO4·2H2O)
mineral
Tiger's Eye (Golden and Blue)
Silicon Dioxide (SiO2) with fibrous inclusions of Crocidolite
mineral
Quartz Druze
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Yellow Quartz (Citrine or Quartzite Pebble)
Silicon Dioxide (SiO2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Smoky Quartz with Feldspar
Quartz (SiO2) with Potassium Feldspar (KAlSi3O8)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Honey Calcite
Calcium Carbonate (CaCO3)
mineral
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
mineral
Smoky Quartz Geode Slice
Silicon Dioxide (SiO2)
mineral