摘要
硫碲铋铅金矿（AuPb2BiTe2S3）是1991年国际新矿物及矿物命名委员会（CNMMNIMA）批准的新矿物，产于美国科罗拉多（Colorado）州的巴克霍恩（Buckhoun）矿山。我们于1986年发现了该矿物，但呈报CNMMNIMA晚于美国。我国的硫碲铋铅金矿产于河南灵宝出岔-乱石和桐沟两个石英脉型金矿。该矿物为柱板状晶体，粒径0．03～0．2mm，黑色，一组解理发育，金属光泽。显微硬度为64～129kg／mm2，（负荷10g），反射色为灰色，微带蓝色色调，非均质性明显，无内反射，以等能光源（SE）对R1和R2计算的颜色指数分别为：x0．323，y0．326，Y％42.69，λd480，Pe％0．04；和x0．326，y0．326，Y％43．70，λd476，Pe％0．03。电子探针分析结果为：CU0.02，Au16．96，Ph35．34，Bi15．93，Te20．79，S8．21。化学式为：Au1.03Ph2.04Bi0.91Te1.95S3.06，斜方晶系，a＝0．41，b＝1．25，c＝0．95nm，V＝0．487nm3。理论比重Dx＝7．94。
Buckhornite (AuPb2BiTe2S3) is a new mineral discovered in the abandoned Buckhorn mine near Jamestown, Boulder County, Colorado. The mineral was officially approved by the CNMMNIMA in 1991. The mineral was discovered in China in 1986, but no research has been done because of the lack of funds. The mineral discovered in China occurs in the gold-bearing quartz veins at Chucha-Luanshi and Tonggou, Lingbao ounty, Henan Province. Its associated minerals are quartz, pyrite, native gold, calaverite, tellurobismuthite, altaite, rickardite, vulcanite, petzite,lead, etc- Columnar in crystal form, 0. 03~0. 2mm in grain size, black in color and steel-gray in streak. Perfect cleavage and metallic luster. Microhardness is 64~ 129 kg/mm2(load: 10g). Colour values relative to SE for R1 and R2 are x 0. 323, y 0.326, Y%42. 69, Ad 480 nm, Pe% 0. 041 and x0. 326, y 0. 326, Y% 43. 70, Ad 476 nm and Pe% 0. 0313. Electron microprobe analysis gave: Cu 0. 02, Au 16.96, Pb 35. 34, Bi 15. 93, Te 20. 79 and S 8.21. The empirical formula is Au1.03Pb2.04Bi0.91Te1.95S3.06,orthorhombic, α= 0.41, b= 1. 25, c= 0.95nm, V= 0.487nm3. Dcale 7. 94 (for the empirical formula). The strongest lines in the X-ray powder diffraction pattern are: 3. 79 (30),3. 143 (30), 2. 747 (100). 2. 468 (80), 2. 380 (50), 2.049 (50), 1.811 (70) and 1. 710 (50).
出处
《矿物学报》
CAS
CSCD
北大核心
1994年第3期241-246,共6页
Acta Mineralogica Sinica
关键词
硫碲铋铅金矿
金矿物
金铅铋
buckhornite
Au-Pb-Bi sulfotelluride
gold mineral
Henan
