T073, Minerals《矿物》


Stamp Title: Minerals
Serial number: T73
Values in set: 4
(4-1), Orpiment, 4 fen, 30*40 mm
(4-2), Stibnite, 8 fen, 30*40 mm
(4-3), Cinnabar, 10 fen, 30*40 mm
(4-4), Wolframite, 20 fen, 30*40 mm
Date of issue: August 25, 1982
Denomination: 42 fen
Designer: Xu Yanbo
Size of stamps: 30*40mm
Perforation: 11.5*11
Sheet composition: 80 (10*5)
Printing process: Photogravure
Printing House: Beijing Postage Stamp Printing Works

T73 矿物
(1) 4分 雌黄 539.66万枚
(2) 8分 辉锑矿 1440.16万枚
(3)10分 辰砂 545.66万枚
(4)20分 黑钨矿 510.16万枚
发行日期:1982.8.25。影写版。P11.5×11。30mm×40mm。50(10×5)。设计:许彦博。印刷:北京邮票厂。

中国地大物博,蕴藏着丰富的矿物资源。目前世界上已知的140多种有用的矿产,在中国均有蕴藏,其中如钨、钼、锑、汞、铜、铅、锌等矿的储量,均居世界前列。尤其钨、锡、锑、汞是中国传统的出口矿产。
4-1 为“雌黄”。雌黄是一种柠檬黄色或金黄色的矿物,有珍珠光泽,用于提炼砷和制造三氧化二砷等化合物,也用作制造玻璃、颜料、焰火等的原料。
4-2 为“辉锑矿”。辉锑矿呈铅灰色,有金属光泽,用于提炼锑和锑白等化合物。
4-3 为“辰砂”。辰砂又称朱砂和丹砂,是汞的主要矿物,用于提炼汞以及制造汞齐和硝酸汞、硫酸汞、氧化汞、氯化汞等。
4-4 为“黑钨矿”。黑钨矿又称钨锰铁矿,呈黑色、灰色或黄棕色,有金属光泽,用于提炼钨和制造钨钢。

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