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1.leaden clouds
2.leaden skies
3.Leaden clouds promising rain
预示有雨的铅灰色的云收藏指正
4.Drizzle from a leaden sky.
铅灰色的天空中飘落的雨丝收藏指正
5.In the second morning, snowflake fell from leaden sky.
第二天早晨,铅灰色的天空飘下了雪花。收藏指正
6.Tellurian tennantite, a rare sulfosalt mineral, was discovered for the first time in a pyrite deposit related to mesothermal一 epithermal alteration in Lufeng County, Guangdong Province,As an isotropic mineral, it occuts as irregular grains embedded in pyrite, is lead grey in color and 0.02-0.20 mm in size, and has a Rockwell hardness of 269.3 kg/mm ̄2, with reflection color being grey with a bit brown tone. The associated minerals include tellurobis-muthite and wittichenite.
碲砷黝铜矿产于广东陆丰中低温热液蚀变岩型硫铁矿床中.该矿物呈浑圆状、不规则状嵌布在黄铁矿内,粒径0.02-0.20mm,铅灰色,硬度H_v=269.3kg/mm ̄2,反射色呈灰色微带棕色色调,均质性。收藏指正
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