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Meneghinite

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Meneghinite
General
CategorySulfosalt mineral
Formula
(repeating unit)
CuPb13 Sb7S24
IMA symbolMeg
Strunz classification2.HB.05b
Crystal systemOrthorhombic
Crystal classDipyramidal (mmm)
H-M symbol: (2/m 2/m 2/m)
Space groupPbnm
Identification
ColorBlackish lead-grey
Crystal habitPrismatic to acicular, massive
Cleavage{010} perfect
FractureConchoidal
TenacityBrittle
Mohs scale hardness2+1⁄2
LusterMetallic
StreakBlack shining
DiaphaneityOpaque
Specific gravity6.36
PleochroismWeak
References

Meneghinite is a sulfosalt mineral with the chemical formula CuPb13 Sb7S24.

In the orthorhombic crystal system, meneghinite has a Mohs hardness of 2+1⁄2, one perfect cleavage and a conchoidal fracture. It is a blackish lead-grey in colour and gives a black shining streak. Its lustre is metallic.

Discovered in the Italian Province of Lucca in 1852, it is named after Giuseppe Meneghini (1811–1889) of the University of Pisa, who first observed the species. The Bottino Mine in Lucca is the type locality.

Sample of Meneghinite from the Harvard Museum of Natural History

References

  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.
  2. Mineralienatlas
  3. http://rruff.geo.arizona.edu/doclib/hom/meneghinite.pdf Handbook of Mineralogy
  4. ^ Mindat information page for Meneghinite
  5. The Brown Reference Group plc, ed. (2007). "Meneghinite". Treasures of the Earth. De Agostini UK Ltd. ISBN 978-0-7489-7995-0.


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