Quartz pebble
Silicon dioxide (SiO2)
mineral
Category
Mixed (Sedimentary, Igneous, And Metamorphic)
Browse mixed (sedimentary, igneous, and metamorphic) specimens identified by the Rock Identifier community.
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Quartz Vein in Host Rock
Silicon Dioxide (SiO2) in matrix
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
mineral
Yellow Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Black Sapphire
Corundum (Al2O3 with inclusions of hematite or ilmenite)
mineral
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Green Aventurine
Silicon dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
mineral
Citrine
Citrine (Silicon Dioxide, SiO2)
mineral
Moonstone (Tumbled)
Orthoclase (Potassium Feldspar) - (K,Na)AlSi3O8
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Garnet in Host Rock
Garnet Group (A3B2(SiO4)3)
metamorphic
Schist
Chlorite/Mica Schist
metamorphic
Citrine Quartz (Yellow Quartz)
Silicon Dioxide (SiO2) with iron impurities
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Smoky Quartz (Silicon Dioxide, SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Rainbow Moonstone
White Labradorite (formula: (Na,Ca)(Al,Si)4O8)
mineral
Black Tourmaline (Schorl)
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Tumbled Amethyst
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz (Rough Specimen)
Silicon Dioxide (SiO2)
mineral
Biotite Schist
Biotite-rich Schist
metamorphic
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Moonstone
Orthoclase Feldspar ((K,Na)AlSi3O8)
mineral
Quartz (River Pebble)
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Yellow Quartz (Citrine or Iron-Stained Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Yellow Quartz (Citrine or Citrine-colored Quartz)
Silicon Dioxide (SiO2)
mineral
Moonstone
Orthoclase (KAlSi3O8) with inclusions of Albite (NaAlSi3O8)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Weathered Pyrite Nodule
Iron Sulfide (FeS2) undergoing oxidation to limonite/goethite
mineral
Gneiss
Gneiss (Foliated Metamorphic Rock)
metamorphic
Blue Apatite
Fluorapatite - Ca5(PO4)3F
mineral
Smoky Quartz with Inclusions
Silicon Dioxide (SiO2)
mineral
Quartz Pebble (with potential iron inclusions)
Silicon Dioxide (SiO2)
mineral