Optical and crystal-chemical changes in aquamarines and yellow beryls from Thanh Hoa province, Vietnam induced by heat treatment
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F15%3A33157035" target="_blank" >RIV/61989592:15310/15:33157035 - isvavai.cz</a>
Alternative codes found
RIV/00216224:14310/15:00087129
Result on the web
<a href="http://link.springer.com/article/10.1007%2Fs00269-014-0719-4" target="_blank" >http://link.springer.com/article/10.1007%2Fs00269-014-0719-4</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s00269-014-0719-4" target="_blank" >10.1007/s00269-014-0719-4</a>
Alternative languages
Result language
angličtina
Original language name
Optical and crystal-chemical changes in aquamarines and yellow beryls from Thanh Hoa province, Vietnam induced by heat treatment
Original language description
Optical and crystal-chemical changes in two beryl varieties after the heat treatment were determined using a wide spectrum of analytical methods. Studied aquamarines are generally more enriched in Fe (up to 0.25 apfu) and alkali (up to 0.08 apfu) than yellow beryls (up to 0.07 apfu Fe, up to 0.04 apfu alkali). The determined c/a ratio of 0.997-0.998 classified all our studied beryls as "normal" beryls. While no crystal structure changes were observed in samples heated to 700 A degrees C, those heated to900 and 1,100 A degrees C exhibited cracks and fissures. Reduced Fe occurred in samples heated between 300 and 700 A degrees C, and subsequent oxidation from 900 to 1,100 A degrees C induced changes in their colour and clarity. The Fe-bearing beryl colour is controlled by the position of the absorption edge and the presence of a broad band attributed to Fe2+ in the NIR region. Blue colour results from the absorption edge located deeper in the UV region and the presence of broad band in
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
DB - Geology and mineralogy
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physics and Chemistry of Minerals
ISSN
0342-1791
e-ISSN
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Volume of the periodical
42
Issue of the periodical within the volume
4
Country of publishing house
DE - GERMANY
Number of pages
16
Pages from-to
287-302
UT code for WoS article
000351463100004
EID of the result in the Scopus database
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