Dendritic Agate
Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions
Category
Browse mineral_rock specimens identified by the Rock Identifier community.
Dendritic Agate
Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions
Amber with inclusion
Amber (Fossilized Tree Resin)
Blue Chalcedony
Silicon Dioxide (SiO2)
Carnelian Agate
Silicon Dioxide (SiO2) with iron oxide inclusions
Spiny Oyster Shell
Spondylus varians (Biogenic Calcium Carbonate)
Blue Celestite (with Galena)
Strontium sulfate (SrSO4) and Lead sulfide (PbS)
Schorl (Black Tourmaline)
Schorl (Sodium Iron Aluminum Borosilicate Hydroxide), NaFe3Al6(BO3)3Si6O18(OH)4
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Milky Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
Labradorite
Labradorite (Ca,Na)(Al,Si)4O8
Gold
Native Gold (Au)
Diamond (or Cubic Zirconia)
Carbon (C) or Zirconium Dioxide (ZrO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Rose Quartz
Quartz (Silicon Dioxide, SiO2)
Chevron Amethyst
Crystalline Silicon Dioxide with Iron impurities (SiO2)
Amethyst
Silicon Dioxide (SiO2) with trace Iron (Fe3+)
Smoky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Slag (Industrial By-product)
Anthropogenic Vitreous Silica/Iron Silicate
Malachite
Copper carbonate hydroxide, Cu2CO3(OH)2
Quartz Geode Pebble
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
Basalt
Mafic Volcanic Rock (composed of plagioclase, pyroxene, and olivine)
Pink Dyed Agate
Silicon Dioxide (SiO2) - Variety Agate
Chalcedony
Cryptocrystalline Quartz (SiO2)
Amethyst Geode
Silicon Dioxide (SiO2) with iron impurities
Orange Quartz
Silicon Dioxide (SiO2) with iron oxide inclusions
Larimar
Pectolite (NaCa2Si3O8(OH))
Smoky Quartz
Silicon Dioxide (SiO2)
Citrine
Silicon Dioxide (SiO2)
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
Thunderegg
Agate-filled Rhyolitic Nodule (SiO2)
Milky Quartz with Iron Inclusions
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Milky Quartz
Crystalline Silicon Dioxide (SiO2)
Green Aventurine
Silicon Dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
Milky Quartz
Silicon Dioxide (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Citrine Geode
Citrine (Silicon Dioxide, SiO2)