Chert / Flint Nodules in Limestone
Silicon Dioxide (SiO2) within Calcium Carbonate (CaCO3)
sedimentary
Category
Mineral Variant
Browse mineral variant specimens identified by the Rock Identifier community.
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Likely basalt pebble
Basalt; fine-grained mafic volcanic rock, chiefly plagioclase and pyroxene with possible olivine
igneous
Tiger's Eye (variations include Blue or Hawk's Eye)
Silicon Dioxide with Crocidolite inclusions (SiO2)
Metamorphic mineral
Chalk (Limestone variant)
Calcium Carbonate (CaCO3)
sedimentary
Sandstone (lithic/quartz variant)
Clastic sedimentary rock (SiO2 predominant)
sedimentary
Rough Blue Diamond
Carbon (C)
mineral
Dyed Crackle Quartz (Green)
Quenching-treated Quartz (Silicon Dioxide, SiO2)
mineral
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Quartz (Milky variant)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky Variant)
Silicon Dioxide (SiO2)
mineral
Citrine (Quartz variant)
SiO2 (Silicon Dioxide)
mineral
Aqua Aura Quartz
Titanium/Gold-coated Silicon Dioxide (SiO2)
mineral
Tumbled Chalcedony
Quartz (Silicon Dioxide - SiO2)
mineral
Quartz (Herkimer Diamond variant)
Silicon Dioxide (SiO2)
mineral
Aura Turquoise or Treated Turquoise Beads
Hydrated copper and aluminum phosphate (CuAl6(PO4)4(OH)8·4H2O) with metallic coating
gemstone
Bauxite (Iron-stained Chert / Ironstone Aggregate)
Hydrous aluminum oxide mixture (mainly Gibbsite Al(OH)3, Boehmite γ-AlO(OH), and Goethite α-Fe3+O(OH))
sedimentary
Serpentine
Serpentine group (Mg,Fe,Ni,Al,Zn,Mn)3(Si,Fe,Al)2O5(OH)4
metamorphic
Corundum (Sapphire variant)
Aluminium oxide (Al2O3)
mineral
Magnetite (Lodestone variant)
Magnetite (Fe3O4)
mineral
Quartz (Milky Variant)
Quartz (Silicon Dioxide, SiO2)
mineral
Chalcedony (Agate/Carnelian variant)
Silicon Dioxide (SiO2)
mineral
Chert
Chert (variant of microcrystalline quartz)
Sedimentary
Amber (Burmite)
Fossilized tree resin (Succinite variant)
Organic mineraloid
Granite
Phaneritic Plutonic Igneous Rock (Granite)
igneous
Ferruginous Quartz (Carnelian-tinted Quartz)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
mineral
Granite
Phaneritic Igneous Rock (Granite)
igneous
Magnetite (Lodestone)
Magnetite (Fe3O4)
mineral
Quartz (Smoky Quartz variant)
Silicon Dioxide (SiO2)
mineral
Granite
Granite (Mainly Quartz, Feldspar, and Mica)
igneous
Amazonite
K(AlSi3O8) - Potassium Feldspar (Microcline variant)
mineral
Petrified Wood
Silicified wood (Quartz variant, SiO2)
sedimentary
Quartz (Rose Quartz or Chert variant)
Silicon Dioxide (SiO2)
mineral
Chert (Nodule)
Silicon Dioxide (SiO2)
sedimentary
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Granite
Felsic Plutonic Rock
igneous
Granite
Granite (a phaneritic intrusive igneous rock)
igneous
Yellow Diamond
Diamond (Carbon, C)
mineral
Quartz (Herkimer Diamond variant)
Silicon Dioxide (SiO2)
mineral
Quartz (Smoky Quartz variant)
Silicon Dioxide (SiO2)
mineral
Chalcedony (Agate/Carnelian variant)
Silicon Dioxide (SiO2)
mineral
Fossilized Tiger Shark Tooth
Galeocerdo cuvier (fossilized hydroxylapatite)
sedimentary
Botryoidal Chalcedony Geode
Silicon Dioxide (SiO2) - Chalcedony / Cryptocrystalline Quartz
mineral