Russian Mineralogical Society
200th Anniversary Meeting of the Russian Mineralogical Society
Pneumatogenic cupreous thalfenisite from sulfides-bearing plagioclase lherzolites of Ioko-Dovyrensky intrusive, Northern Transbaycalia

RMS-DPI code:  2017-1-189-0
Scientific session:  4. Minerals as indicators of the rock and ore formation.
Author listing:  Spiridonov E.M.
Principal author:  Spiridonov Ernst Maxovich.
Language:  Russian
Abstract - Summary 
(short description):
Abstract. Rare small intergrowths of pneumatolitic PGM (geversite, sperrylite; insizvaite, niggliite, zvyagintsevite…) and Tl–Fe–Cu sulphide are developed in little nests of magmatogenic troilite, pentlandite, cubanite, chalcopyrite and Cl-bearing phlogopite in plagioclase lherzolites from the lower part of hyperbasic-basic Ioko-Dovyrenski intrusive. The composition of the sulfide corresponds to Ni-less cupreous thalfenisite, wt.%: Tl 34.94; Ag 0.13; Fe 24.05; Co 0.18; Cu 15.95; Cd 0.19; S 22,64; Cl 0.87; sum – O = Cl2 98.75 %. The formula of the mineral is: (Tl6.24Ag0.04)6.28(Fe15.32Cu9.16Co0.14Cd0.06)25/05S25.77Cl0.89], ~ Tl6(Fe,Cu)25S26Cl. Obviously, wide variations of Fe-Ni-Cu contents is typical both for thalfenisite and its K-bearing analogue djerfisherite.

RMS-DPI code:  2017-1-189-0
Pages:  321-322
File of proceedings 
 109 K
Status:  printed
Accepted:  16/09/2017
Published on-line:  07/12/2017
Permanent address of publication:
Contact author(s):  Spiridonov, Ernst Maxovich.

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