SHANDITE Meaning and
Definition
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Shandite is a mineral with the chemical formula Pb2Cl3(IO3)(OH), belonging to the chloride mineral group. It is an extremely rare and highly prized mineral due to its unique crystal structure and distinctive composition. The name "shandite" is derived from the Scottish mineralogist and geologist Sir Archibald Geikie's field assistant, Harold George Shand, who discovered the mineral in the early 20th century.
Shandite is typically found in small quantities within hydrothermal veins associated with lead and iodine-rich deposits, although most documented occurrences of this mineral are limited to a few localities worldwide. Its crystal system is monoclinic, and it forms translucent to transparent crystals that can exhibit a range of colors such as brown, yellow, or reddish-brown.
This mineral is notable for its high luster and unique crystal habits, often forming prismatic or acicular crystals with well-developed terminations. Shandite is also characterized by its relatively high specific gravity and perfect cleavage on the {100} plane. Its hardness is measured around 2.5 on the Mohs scale, indicating its relatively low resistance to scratching.
Due to its scarcity and limited availability, shandite is primarily sought after by collectors and mineral enthusiasts who appreciate its rarity and aesthetic qualities. Its unique composition and crystal structure make it a fascinating subject for scientific study as it provides valuable insights into the geological and chemical processes occurring within hydrothermal systems.
