Bismuthite is a mineral that contains bismuth and sulfur. The spelling of this word is unique because it contains a combination of letters that are not commonly seen together in the English language. The IPA phonetic transcription of bismuthite is /ˈbɪzməθaɪt/. The "s" and "m" sounds blend together and the "th" sound is pronounced with the tongue between the teeth. The "i" and "u" sounds are pronounced separately. This mineral is primarily used in refining bismuth and creating alloys.
Bismuthite is a mineral that belongs to the oxidation zone mineral group, characterized as a sulfide compound. Its chemical formula is typically Bi2O3, indicating a chemical composition made up of two atoms of bismuth bonded to three oxygen atoms. However, in some cases, it may contain impurities or trace elements, such as arsenic, antimony, or sulfur.
From a structural perspective, bismuthite generally crystallizes in the orthorhombic crystal system, forming prismatic or tabular crystals. It commonly exhibits a high luster and a distinct yellow to yellowish-brown color. Other physical properties of bismuthite include a white to grayish-white streak and a relatively high density, averaging around 8.9 grams per cubic centimeter.
Bismuthite is frequently found in hydrothermal veins and other ore deposits associated with bismuth mineralization. It occurs in various parts of the world, including countries like Germany, Bolivia, Australia, and Canada. The mineral is often associated with other sulfide minerals, such as bismuthinite, galena, and sphalerite.
Due to its relatively rare occurrence and its association with bismuth, bismuthite holds significance in both scientific and industrial applications. The mineral is sometimes collected by mineral enthusiasts and collectors due to its unique crystal forms and vibrant color. Additionally, it is used in scientific research to study the behavior and properties of sulfide minerals.
A yellowish-grey ore of bismuth, or of a white or dull mountain-green.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word "bismuthite" is derived from the chemical element "bismuth". It is formed by combining "bismuth" with the suffix "-ite", which is commonly used in geology to denote a mineral or ore. "Bismuth" itself comes from the German word "Wismut", which has its roots in Middle High German "wisemut" or "wissamut", and can be traced back to the Old High German word "wisamot". The exact origin of the Old High German word is uncertain, but it is believed to be derived from a compound of the elements "wīs" (white) and "muot" (courage, spirit), referring to bismuth's characteristic white color. So, the etymology of "bismuthite" can ultimately be traced back to German and Old High German origins.