Английская Википедия:Boleite
Boleite is a complex halide mineral with formula: KPb26Ag9Cu24(OH)48Cl62.[1] It was first described in 1891 as an oxychloride mineral. It is an isometric mineral which forms in deep-blue cubes. There are numerous minerals related to boleite, such as pseudoboleite, cumengite, and diaboleite, and these all have the same complex crystal structure.[2] They all contain bright-blue cubic forms and are formed in altered zones of lead and copper deposits, produced during the reaction of chloride bearing solutions with primary sulfide minerals.[3]
Physical properties
The external property of a boleite crystal structure indicates its cubic structure. It is classified under the isometric crystal class. Boleite has a perfect cleavage in the [001] direction, and has a very dark glossy blue color with a light greenish-blue color streak. Twinning is best shown in this mineral by notches along the interpenetrated angles, which results in a crystal habit of pseudocubic penetration twinning along three different angles perpendicular to one another. Boleite has cubes over half an inch on each side, which consist of pseudo-octahedral tetragonal dipyramids.[4]
Geologic occurrence
Boleite was first collected as a very minor ore of silver, copper and lead at Boleo, Mexico.[3] Boleite was named after its place of discovery, El Boleo mine, on the Baja Peninsula, near Santa Rosalia, Mexico.[1]
Minerals associated with boleite include pseudoboleite, cumengeite, atacamite, anglesite, cerussite, phosgenite and gypsum at the type locality in Boleo, Mexico. In the Mammoth-St. Anthony mine of Arizona associated minerals include pseudoboleite, anglesite, cerussite, atacamite, paratacamite, leadhillite, paralaurionite, caledonite, phosgenite, matlockite and bideauxite.[5]
References
External links
- Шаблон:Cite journal
- Шаблон:Cite journal
- Parker, Robert L. (1981). Rocks and Mineral Deposits. W.H. Freeman and Company. San Francisco. 343–422.
- Pirsson, Louis V. (1964). Rocks and Rock Minerals. John Wiley & Sons, Inc. New York, London. 34–56
- Williams, Peter A., Thomas, John H., Humphries, Alun, Samad, Abdul F. (1981). “Chemical Studies on the Stabilities of Boleite and Pseudoboleite”. Mineralogical Magazine v.44: 101–104 3Шаблон:Dead link
- link to cryptohalite Шаблон:Webarchive
- ↑ 1,0 1,1 Ошибка цитирования Неверный тег
<ref>; для сносокMindatне указан текст - ↑ Martens, W., Williams, P.A., Frost, R.L. (2003) "Raman spectroscopy of the minerals boleite, cumengite, diaboleite and phosgenite – implications for the analysis of cosmetics of a antiquity". Mineralogical Magazine. V.67: 103–111 1Шаблон:Dead link
- ↑ 3,0 3,1 Rouse, Roland C. (1973/01). "The Crystal Structure of boleite – A Mineral Containing Silver Atom Clusters". Journal of Solid State Chemistry 6(1): 86–92 2
- ↑ Weber, Julius (1974). The Formation of Minerals. Van Nostrand Reinhold Company. New York, London. pp. 78–80
- ↑ Ошибка цитирования Неверный тег
<ref>; для сносокHBMне указан текст
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