WK&RQIHUHQFH RI WKH 6HUELDQ &U\VWDOORJUDSKLF 6RFLHW\
:$7(5 ,1 7+( $//8$8',7( 7<3( 6758&785(
6<17+(6,6 &5<67$/ 6758&785( $1' 0$*1(7,&
3523(57,(6 2)
&R $V2 +$V2 + $V2 + 2
7 RUÿHYLüD /M .DUDQRYLüE = -DJOLþLüF 0 -DJRGLþF
a University of Vienna, Institut für Mineralogie und Kristallographie, Althansstr. 14, A-1090 Vienna, Austria, b University of Belgrade, Faculty of Mining and Geology, Laboratory for Crystallography, University of Belgrade, ušina 7, 11000 Belgrade, Serbia, c Institute of Mathematics, Physics and Mechanics & Faculty of Civil and Geodetic, Engineering, University of Ljubljana, Jadranska 19, Ljubljana, Slovenia
H PDLO WDPDUD GMRUGMHYLF#XQLYLH DF DW
6LQJOH FU\VWDOV RI WKH QHZ FRPSRXQG WUL &R ,, KHPL DUVHQDWH 9 GL >K\GURJHQ DUVH QDWH 9 @KHPL >GL K\GURJHQDUVHQDWH 9 @KHPLK\GUDWH &R $V2 +$V2 + $V2
+ 2 GHQRWHG &R$V DOOXDXGLWH ZHUH JURZQ XQGHU K\GURWKHUPDO FRQGLWLRQV &R$V DOOXDXGLWH UHSUHVHQWV D QHZ PHPEHU RI DOOXDXGLWH OLNH SURWRQDWHG DUVHQDWHV >VSDFH JURXS
C c a b c c E ƒ V c
Z @ ,Q WKH XQLW FHOO RI &R$V DOOXDXGLWH WKH RQH RI WKH WZR &R RQH RI WKH WZR $V DQG RQH RI WKH VHYHQ 2 DWRPV OLH DW eVSHFLDO SRVLWLRQV ZLWK VLWH V\PPHWULHV 7KH FU\VWDO VWUXFWXUH FRQVLVWV RI WKH LQILQLWH HGJH VKDUHG &R2 RFWDKHGUD FKDLQV UXQQLQJ DORQJ WKH > C @ GLUHFWLRQ 7KH FXUYHG FKDLQV DUH LQWHUFRQQHFWHG E\
> $V 2 + $V 2 @±DQG >+$V 2 @± WHWUDKHGUD IRUPLQJ D KHWHURSRO\KHGUDO ' RSHQ IUDPHZRUN ZLWK WZR W\SHV RI SDUDOOHO FKDQQHOV %RWK DQG FKDQQHOV DUH UXQ QLQJ DORQJ WKH cD[LV DQG DUH ORFDWHG DW
SRVLWLRQV z DQG z UHVSHF
WLYHO\ 7KH + DQG + K\GURJHQ DWRPV RI 2 + DQG 2 + K\GUR[\O JURXSV DUH VLWXDWHG LQ FKDQQHO ZKLOH LQ FKDQQHO WKH XQFRRUGLQDWHG ZDWHU PROHFXOH + 2 DW KDOI RFFXSLHG eVSHFLDO SRVLWLRQV DQG K\GURJHQ DWRPV RI 2 + K\GUR[\O JURXS ZHUH IRXQG ,QIUDUHG DQG VLQJOH FU\VWDO 5DPDQ VSHFWUD ZHUH PHDVXUHG DQG HYDOXDWHG LQ RUGHU WR REWDLQ IXUWKHU LQIRUPDWLRQ RQ WKH DQLRQ JURXSV DQG HVSHFLDOO\ RQ WKH VKRUW K\GURJHQ ERQGV 7KH 2+ VWUHWFKLQJ IUHTXHQF\ LV LQ JRRG DJUHHPHQW ZLWK WKH REVHUYHG 2ÂÂÂ2 GLVWDQFHV
7KH UHVXOWV RI WKH PDJQHWLF LQYHVWLJDWLRQV FRQILUP WKH TXDVL RQH GLPHQVLRQDO VWUXFWXUH RI GLYDOHQW FREDOW LRQV 7KH\ DUH DQWLIHUURPDJQHWLFDOO\ FRXSOHG ZLWK WKH LQWUDFKDLQ LQWHU DFWLRQ SDUDPHWHU RI J§ ± FP± DQG LQWHUFKDLQ SDUDPHWHU RIJ § ± FP± WKDW EHFRPH HIIHFWLYH EHORZ WKH 1pHO WHPSHUDWXUH RI .