All,
The Li in olivine can be compensated with Al as LiAlSiO4.
Eric
>Tomas,
>
>I beg to differ with Horst: whether 5 ppm or 5 wt% Li is present,
>the charge deficit
>resulting from Li = Mg substitution must be compensated for.
>
>There are two-three other references to consult:
>
>Taura et al. (1998) Phys. Chem. Minerals 25:469-484
>Brenan et al. (1998) Geochim Cosmochim Acta 62:2129-2141 (there may
>be a second
>paper by these authors that might be of interest to you, but I don't
>have the reference
>handy).
>
>Cheers, Ed
>
>Date sent: Thu, 17 Jan 2002 13:03:46 +0100
>Send reply to: No title defined <[log in to unmask]>
>From: Tomas Magna <[log in to unmask]>
>Subject: Li substitution in mantle
>To: [log in to unmask]
>
>> Hi all,
>>
>> I would like to ask you whether you know what the substitution can
>>Li participate on in mantle conditions in olivine. Li is known to
>>be enriched in this mineral substituting for Mg2+ which is of
>>similar size. But the charge should be somehow compensated. Has
>>anybody some ideas?
>> Thanks for help.
>>
>> Cheers,
>>
>> Tomas
>>
>> __________________________________________
>> Tomas Magna
>> Institute for Isotope Geology and Mineral Resources
>> Department of Earth Sciences, ETH Zentrum, NO C61.1
>> Sonneggstrasse 5,CH-8092, Zürich, Switzerland
>> tel. +41-1-632-6441
>> fax. +41-1-632-1179
>> e-mail: [log in to unmask]
>
>++++++++++++++++++++++++++++++++++++
>Edward S. Grew
>Department of Geological Sciences
>University of Maine
>5790 Bryand Research Center
>Orono, Maine 04469-5790 USA
>Tel: 207-581-2169
>Fax: 207-581-2202
>E-mail: [log in to unmask]
>Homepage: http://www.geology.um.maine.edu/user/ed_grew/
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