Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Category
Igneous And Metamorphic
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Chalcopyrite in Quartz matrix
Chalcopyrite (CuFeS2) with secondary Malachite (Cu2CO3(OH)2)
mineral
Citrine
Silicon Dioxide (SiO2)
mineral
Citrine
Citrine (Silicon Dioxide, SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Peach Moonstone
Orthoclase Feldspar (KAlSi3O8)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Hematite
Hematite (Fe2O3)
Mineral
Quartz pebble
Silicon dioxide (SiO2)
mineral
Milky quartz
Quartz, silicon dioxide (SiO₂)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Rough Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
mineral
Smoky Quartz (with inclusions)
Silicon Dioxide (SiO2)
mineral
Amethyst
Amethyst (Silicon Dioxide, SiO2)
mineral
Milky quartz fragment
Quartz, silicon dioxide (SiO₂)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Citrine
SiO2 (Silicon Dioxide)
mineral
Smoky Quartz and Citrine
Silicon Dioxide (SiO2)
mineral
Black Tourmaline (Schorl)
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Schorl (Black Tourmaline)
NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
mineral
Orange Quartz
Silicon Dioxide (SiO2) with Hematite inclusions
mineral
Moonstone
Orthoclase Feldspar (KAlSi3O8) with inclusions of Albite
mineral
Moonstone
Orthoclase Feldspar ((K,Na)AlSi3O8)
mineral
Citrine
Silicon Dioxide (SiO2) with iron impurities
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Blue Sapphire
Corundum (Al2O3)
mineral
Magnetite
Iron(II,III) oxide (Fe3O4)
mineral
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
mineral
Sunstone / Peach Moonstone (Feldspar variety)
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Quartz pebble
Silicon dioxide (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Black Tourmaline (Schorl)
NaFe3+3Al6(BO3)3Si6O18(OH)4
mineral
Blue Apatite
Fluorapatite / Apatite (Ca5(PO4)3(F,Cl,OH))
mineral
Quartz Sand
Silicon Dioxide (SiO2)
sedimentary
Weathered quartz-rich cobble, possibly quartzite or feldspar-rich granite
Quartz–feldspar aggregate; identification is uncertain from the photograph
igneous
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary