Cylindrite

Cylindrite
General
CategorySulfosalt minerals
FormulaPb3Sn4FeSb2S14
IMA symbolCy[1]
Strunz classification2.HF.25a
Dana classification03.01.04.01
Crystal systemTriclinic
Identification
Formula mass1,844.71 g/mol
ColourLead grey, greyish black
Crystal habitCylindrical
CleavagePerfect on {100}
TenacityMalleable
Mohs scale hardness2+12
LustreMetallic
StreakBlack
DiaphaneityOpaque
Specific gravity5.4 – 5.42
References[2][3][4]

Cylindrite is a sulfosalt mineral containing tin, lead, antimony and iron with formula: Pb3Sn4FeSb2S14. It forms triclinic pinacoidal crystals which often occur as tubes or cylinders which are in fact rolled sheets. It has a black to lead grey metallic colour with a Mohs hardness of 2 to 3 and a specific gravity of 5.4.

It was first discovered in the Santa Cruz mine, Oruro Department, Bolivia in 1893. The name arises from its curious cylindrical crystal which it forms almost uniquely among minerals.

See also

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. ^ "Mineral galleries". Archived from the original on 2006-01-11. Retrieved 2006-01-18.
  3. ^ "Cylindrite Mineral Data". webmineral.com. Retrieved 2015-11-24.
  4. ^ "Cylindrite: Cylindrite mineral information and data". mindat.org. Retrieved 2015-11-24.


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