Jump to content

Abswurmbachite

From Wikipedia, the free encyclopedia
(Redirected from IMA1990-007)
Abswurmbachite
General
CategoryNesosilicate
Formula
(repeating unit)
(Cu,Mn2+)Mn3+6O8SiO4
IMA symbolAbs[1]
Strunz classification9.AG.05
Dana classification7.5.1.4
Crystal systemTetragonal
Crystal class4/mmm – Ditetragonal dipyramidal
Unit cell1640.82 ų
Identification
ColorBlack
CleavageNone observed
TenacityBrittle
Mohs scale hardness6.5
LusterMetallic
StreakBrownish black
Specific gravity4.96 g/cm3
Density4.96 g/cm3
PleochroismNon-pleochroic
Common impuritiesIron
References[2]

Abswurmbachite is a copper manganese silicate mineral ((Cu,Mn2+)Mn3+6O8SiO4). It was first described in 1991 and named after Irmgard Abs-Wurmbach (born 1938), a German mineralogist. It crystallizes in the tetragonal system. Its Mohs scale rating is 6.5 and a specific gravity of 4.96. It has a metallic luster and its color is jet black, with light brown streaks.

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.
  2. ^ "Abswurmbachite". mindat.org. Retrieved 18 February 2022.