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Modes and textures of secondary minerals on Chinese coins of different ages

Published online by Cambridge University Press:  05 July 2018

J. N. Fang ,
L. P. Tan  and
E. Huang
J. N. Fang*
Affiliation:
Department of Earth Science, National Taiwan Museum, Taipei 100, Taiwan
L. P. Tan
Affiliation:
Department of Geological Sciences, National Taiwan University, Taipei 106, Taiwan
E. Huang
Affiliation:
Institute of Earth Science, Academia Sinica, Taipei 115, Taiwan
*
* E-mail: [email protected]
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Abstract

A thorough assessment of the secondary minerals on 796 Chinese Pb-Cu-Sn-Zn bronze coins from ∼1100 BC to AD 1911 has been made. Malachite is found on more than 80% of the coins irrespective of their dynasties, but a botryoidal texture is only observed on the coins of the Song dynasty or older. Azurite, however, is seen in microscopic quantities on a single coin of ∼AD 1800, but is clearly visible on the Ming dynasty or older coins. Cerussite is a common secondary mineral of the Qin dynasty and older coins, though it has not been found on the Qing dynasty or younger coins. Cuprite is observed on the Song dynasty and older coins.

Keywords

Chinabronze coinssecondary mineralsmalachitecerussitecupriteazurite.
Type
Research Article
Information
Mineralogical Magazine , Volume 67 , Issue 1 , February 2003 , pp. 23 - 29
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2003

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