Meneghinite
Appearance
Meneghinite | |
---|---|
General | |
Category | Sulfosalt mineral |
Formula (repeating unit) | CuPb13 Sb7S24 |
Strunz classification | 2.HB.05b |
Crystal system | Orthorhombic |
Crystal class | Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m) |
Space group | Pbnm |
Identification | |
Color | Blackish lead-grey |
Crystal habit | Prismatic to acicular, massive |
Cleavage | {010} perfect |
Fracture | Conchoidal |
Tenacity | Brittle |
Mohs scale hardness | 2+1⁄2 |
Luster | Metallic |
Streak | Black shining |
Diaphaneity | Opaque |
Specific gravity | 6.36 |
Pleochroism | Weak |
References | [1][2][3] |
Meneghinite is a sulfosalt mineral with the chemical formula CuPb13 Sb7S24.[3]
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.[3]
Discovered in the Italian Province of Lucca in 1852,[3] it is named after Giuseppe Meneghini (1811–1889) of the University of Pisa, who first observed the species.[4] The Bottino Mine in Lucca is the type locality.[3]
![](http://upload.wikimedia.org/wikipedia/commons/thumb/f/fe/Meneghinite_-_Harvard_Museum_of_Natural_History.jpg/220px-Meneghinite_-_Harvard_Museum_of_Natural_History.jpg)
References
- ^ Mineralienatlas
- ^ http://rruff.geo.arizona.edu/doclib/hom/meneghinite.pdf Handbook of Mineralogy
- ^ a b c d e Mindat information page for Meneghinite
- ^ The Brown Reference Group plc, ed. (2007). "Meneghinite". Treasures of the Earth. De Agostini UK Ltd. ISBN 0-7489-7995-6.