Fool's gold, fool's paradise? Utilising X-ray micro-Computed Tomography to evaluate the effect of environmental conditions on the deterioration of pyritic fossils

IF 0.5 0 HUMANITIES, MULTIDISCIPLINARY

Journal of the Institute of Conservation Pub Date : 2020-09-01 DOI:10.1080/19455224.2020.1810091

L. Allington-Jones, B. Clark, V. Fernandez

引用次数: 1

Abstract

Abstract Natural history museums hold hundreds of thousands of mineral and fossil specimens containing iron sulfides, such as pyrite, all of which may be at risk from deterioration. Oxidation of these minerals causes cracking, crystal growth and powdering which, if unchecked, can eventually lead to the complete loss of specimens. This article reports the findings of an experiment which utilised X-ray micro-Computed Tomography (μCT) to generate 3D time lapse imaging over 15 months to compare the deterioration of pyritic ammonites stored within micro-environments created with varying levels of oxygen and relative humidity. The study concludes that the optimum storage parameters for the preservation of sulfide-bearing specimens are 40% relative humidity and 0% oxygen.

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傻瓜的黄金，傻瓜的天堂?利用x射线微计算机断层成像技术评价环境条件对黄铁矿化石变质的影响

自然历史博物馆保存着成千上万的含有硫化铁的矿物和化石标本，如黄铁矿，所有这些都可能有变质的危险。这些矿物质的氧化会导致开裂、晶体生长和粉末化，如果不加以控制，最终会导致标本的完全丢失。本文报道了一项实验的结果，该实验利用x射线微计算机断层扫描(μCT)生成超过15个月的3D延时成像，以比较储存在不同氧气水平和相对湿度的微环境中的黄铁矿菊石的变质情况。研究认为，含硫化物试样的最佳保存参数为40%相对湿度和0%氧气。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of the Institute of Conservation HUMANITIES, MULTIDISCIPLINARY-

CiteScore

1.50

自引率

0.00%

发文量

期刊介绍： The Journal of the Institute of Conservation is the peer reviewed publication of the Institute of Conservation (Icon). As such, its aims reflect those of Icon, to advance knowledge and education in conservation and achieve the long term preservation and conservation of moveable and immoveable cultural heritage. The Journal provides a collective identity for conservators; it promotes and supports both the profession and professionalism. With international contributions on all aspects of conservation, it is an invaluable resource for the heritage sector. The specific aims of the Journal are to: 1. promote research, knowledge and understanding of cultural heritage conservation through its history, practice and theory 2. provide an international forum to enable and disseminate advances in research, knowledge and understanding relating to conservation and heritage 3. champion and support professional standards of heritage conservation in the UK and internationally 4. provide a permanent record of issues relating to conservation and heritage 5. be financially and operationally sustainable. To achieve these aims, the Journal invites contributions from all those involved in the conservation of cultural heritage and related activities. Areas of interest include understanding cultural heritage materials and their degradation; subject reviews and histories of cultural heritage materials and conservation treatments; new, innovative or improved approaches to conservation and collections care theory, practice, communication, management and training; case studies demonstrating new, innovative or improved approaches; and conservation in its wider context. Submitters are encouraged to demonstrate how their work is of practical application to conservation. To maintain professional standards and promote academic rigour, submissions of articles and shorter notices are subject to an anonymous peer review process.