About the Book
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 35. Chapters: Fluorite, Kainite, Apatite, Bararite, Bastnasite, Friedel's salt, Halite, Mendipite, Magnesium fluoride, Creedite, Bischofite, Cryolite, Chambersite, Boleite, Matlockite, Phosgenite, Mimetite, Pyromorphite, Sal ammoniac, Pinalite, Corderoite, Hilgardite, Marialite, Sylvite, Calumetite, Herbertsmithite, Carnallite, Hanksite, Villiaumite, Frankdicksonite, Sampleite, Zunyite, Frankamenite, Boracite, Gananite, Cotunnite, Perite, Anthonyite, Parisite, Chlorargyrite, Connellite, Atacamite, Botallackite, Afghanite, Nadorite, Cadwaladerite, Barstowite, Northupite, Tachyhydrite, Bromargyrite, Iodargyrite, Zajacite-(Ce), Hydrohalite, Terlinguaite, Akaganeite, Leucophanite, Kukharenkoite-(Ce), Sellaite, Chlorocalcite, Hydrophilite, Challacolloite, Fluocerite, Yttrocerite, Haleniusite-(La), Kremersite, Acuminite, Wagnerite, Abhurite, Simonkolleite, Carobbiite, Fluorcaphite, Herderite, Rosenbergite, Kogarkoite, Asisite, Zharchikhite, Thomsenolite, Aubertite, Artroeite, Kadyrelite. Excerpt: Bararite is a natural form of ammonium fluorosilicate (also known as hexafluorosilicate or fluosilicate). It has chemical formula (NH4)2SiF6 and trigonal crystal structure. This mineral was once classified as part of cryptohalite. Bararite is named after the place where it was first described, Barari, India. It is found at the fumaroles of volcanoes (Vesuvius, Italy), over burning coal seams (Barari, India), and in burning piles of anthracite (Pennsylvania, U.S.). It is a sublimation product that forms with cryptohalite, sal ammoniac, and native sulfur. A. Scacchi first discovered cryptohalite in 1873. It appeared in a volcanic sublimate from the Vesuvian eruption of 1850. In 1926, W.A.K. Christie reported his own chemical study. A microscope was used to pick out enough material for analysis. Distilling with sodium hydroxide (NaOH) produced am...
