丹巴杨柳坪地区铜镍硫化物矿床发现铼矿物

Rhenium minerals discovered in the Cu-Ni sulphide deposit in Yangliuping,Danba district,Sichuan Province,China

铼是地壳中质量分数最少的元素之一,独立的铼矿物十分罕见,我国过去未有发现铼矿物的报道。近年来,我们在对丹巴杨柳坪铜镍矿床进行深入的矿物学研究中,偶然发现了四边形铼矿物Re1其化学简式(Re,Cu,Os,Fe,Ni,Pb)1S2(国际矿物协会未命名委员会指定编号:UM2014-01-S:Re)和三角形铼矿物Re2化学简式(Re,Cu,Fe)1S2(国际矿物协会未命名委员会指定编号:UM2014-02-S:Re)。通过能谱和拉曼光谱分析发现,2种铼矿物的成分和结构明显不同于已报道的铼矿物,具备了成为新矿物的有利前提。尽管目前缺乏电子探针和单晶衍射数据进行验证,但已有成分和结构数据表明,这2种铼矿物有可能为新的矿物种,虽未正式申请并通过国际矿物协会新矿物命名委员获批,但国际矿物协会未命名委员会已指定上述2种铼矿物的未命名编号,我们也因此获得了申请该2种铼矿物可能申请获批成为新矿物的优先权。

Rhenium is one of the rarest elements in the earth crust.Rhenium minerals are very rare and have not previously been found in China.However,in studying the minerals in the typical magmatic sulphide deposit copper-nickel deposit in Yangliuping area,Sichuan Province,China,tetragonal rhenium mineral with the simplified chemical formula(Re,Cu,Os,Fe,Ni,Pb)1S2(IMA CNMNC-SUM assigned number :UM2014-01-S:Re) and a trigonal rhenium mineral with the simplified formula(Re,Cu,Fe)1S2(IMA CNMNC-SUM assigned number :UM2014-01-S:Re).Both differ from the rhenium minerals reported to date in composition and structure as determined by electron diffraction spectroscopy and Raman spectroscopy although an electron probe analysis and single-crystal determination needs to be done.Even though we haven't submitted the formal submission and got approval of the two minerals as accepted new mineral species,based on the composition and structure date,IMA CNMNC-SUM had assigned the unnamed number of the two minerals,so we got the precedence for claim.Therefore,the two rhenium minerals may represent new mineral species.