文章基本信息

标题：Characterisation of vumba and ubumba clays used for cosmetic purposes
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作者：Refilwe Morekhure-Mphahlele ; Walter W. Focke ; Wiebke Grote 等
期刊名称：South African Journal of Science
印刷版ISSN：0038-2353
电子版ISSN：1996-7489
出版年度：2017
卷号：113
期号：3-4
页码：5-5
DOI：10.17159/sajs.2017/20160105
语种：English
出版社：The Foundation for Research Development
摘要：Throughout human history, clays and clayey soils have been used for religious, artistic, cosmetic and therapeuticpurposes. For example, the utilisation of ochre, a clay stained by iron oxides, dates back to the Middle Stone Age.South Africa has a rich tradition in this regard. Evidence of human exploitation, also dating back to the MiddleStone Age, has been found at Klein Kliphuis 1 , the Blombos Cave 2 , Diepkloof Rock Shelter 3 and the Sibudu Cave 4 .The practice of using ochre-like substances for topical cosmetic applications and other purposes persists to thepresent day. The red clay pastes are known as letsoku in Sotho culture and ibomvu among Nguni people and areused by both women and men in traditional ceremonies. This and other lighter-coloured clays apparently also serveas sunscreens.
关键词：quartz;tradition;chemical composition;mineral composition