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Contents

   



(Top)
 


1 Overview  





2 See also  





3 References  





4 External links  














Brownleeite






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Brownleeite
General
CategoryNative element class, Fersilicite group
Formula
(repeating unit)
MnSi
IMA symbolBwn[1]
Strunz classification1.XX.00
Dana classification01.01.23.07
Crystal systemIsometric
Crystal classTetartoidal (23)
H-M symbol: (23)
Space groupP213
Identification
Crystal habitCubic grain in microscopic dust particle (< 2.5 μm)
References[2][3]

Brownleeite is a silicide mineral with chemical formula MnSi. It was discovered by researchers of the Johnson Space CenterinHouston while analyzing the Pi Puppid particle shower of the comet 26P/Grigg-Skjellerup. The only other known natural manganese silicide is mavlyanovite, Mn5Si3.[4]

Overview

[edit]

The particles were collected from the stratosphere over south-western US in April 2003 using an ER-2 high-altitude research aircraft of NASA. The team of researchers from US, Germany and Japan was led by NASA scientist Keiko Nakamura-Messenger.[5][6]

To determine the mineral's origin and examine other dust materials, a new transmission electron microscope was installed in 2005 at Johnson Space Center.[7]

The mineral name was approved by the International Mineralogical Association (IMA Number 2008-011).[8] The NASA scientists named the mineral after Donald E. Brownlee, professor of astronomy at the University of Washington, Seattle, because of his pioneering research on interplanetary dust particles.[9]

See also

[edit]

References

[edit]
  1. ^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
  • ^ http://webmineral.com/data/Brownleeite.shtml Webmineral data
  • ^ http://www.mindat.org/min-36014.html Mindat.org
  • ^ Mindat, http://www.mindat.org/min-38826.html
  • ^ "University of Washington News of Juni 12, 2008". Archived from the original on 2008-07-08. Retrieved 2008-06-14.
  • ^ Newswise: Like a Rock: New Mineral Named for Astronomer Retrieved on June 15, 2008
  • ^ NASA News Releases June 12, 2008: NASA Finds New Type of Comet Dust Mineral
  • ^ Minerals approved by the IMA-CNMNC in June 2008[permanent dead link]
  • ^ Universe Today June 12, 2008: Alien Mineral From Comet Dust Found in Earth's Atmosphere
  • [edit]
    Retrieved from "https://en.wikipedia.org/w/index.php?title=Brownleeite&oldid=1194819981"

    Categories: 
    Manganese(IV) minerals
    Native element minerals
    Cubic minerals
    Minerals in space group 198
    Minerals described in 2010
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