A NEW OCCURRENCE OF LAROSITE FROM THE TINNSJA Cu-Ag DEPOSIT, TELEMARK COUNTY, NORWAY. I. PARAGENESIS AND CHEMICAL COMPOSITION

被引：4

作者：

Cook, Nigel J. ^{[1
,2
]}

Ciobanu, Cristiana L. ^{[1
,2
]}

Pedersen, Oyvind S. ^{[3
]}

Langerud, Thor H. ^{[3
]}

Karlsen, Ove A. ^{[3
]}

机构：

[1] Univ Adelaide, Sch Earth & Environm Sci, Adelaide, SA 5005, Australia

[2] S Australian Museum, Adelaide, SA 5000, Australia

[3] Thoriumpower Holding AS, N-3040 Filtvedt, Norway

来源：

CANADIAN MINERALOGIST | 2010年 / 48卷 / 06期

关键词：

larosite; electron-microprobe analysis; Cu-Ag vein mineralization; Tinnsja; Norway; ROMANIA; OCNA;

D O I：

10.3749/canmin.48.6.1569

中图分类号：

P57 [矿物学];

学科分类号：

070901 ;

摘要：

A second occurrence of the Cu-Pb-Bi sulfosalt larosite, ideally (Cu, Ag)(21)PbBiS(13), is described from Cu-Ag vein mineralization associated with an amphibolite dyke at Tinnsja, southern Norway. The host assemblage consists of bornite - chalcocite - magnetite - wittichenite (+/- chalcopyrite, digenite, stromeyerite) and closely resembles that from the type locality Larosite crystals present an acicular morphology (<100 mu m in length, <10 mu m in width). An electron-microprobe analysis gives the mean empirical formula Cu(20.47)Ag(3.68)Fe(0.22)Pb(1.01)Bi(1.06)S(15.00) calculated on the basis of 15 S atoms.

引用

页码：1569 / 1573

页数：5