Very many thanks Igor - an excellent response. david
At 09:48 AM 01/06/18 +0400, you wrote:
> Dear David, As Droop and Harte (1995) have shown, only three known
>occurrences of this rare mineral assemblage in contact aureole have been
>described in the literature: The Tono aureole, Japan (Okuyama-Kusunose,
>1994); the Karatash aureole, Russia (Likhanov, 1988a,b) and the Insch
>aureole, Scotland (Nockdolds et al., 1978). Droop, G.T.R., Harte, B.,
>1995. The effect of Mn on the phase relations of medium-grade pelites:
>constraints from natural assemblages on petrogenetic grid topology.
>Journal of Petrology 36, 1549-1578. Likhanov, I.I., 1988a. Chloritoid,
>staurolite and gedrite of the high-alumina hornfelses of the Karatash
>pluton. International Geological Review 30, 868-877. Likhanov, I.I.,
>1988b. Evolution of chemical composition in metapelite minerals during
>low-grade contact metamorphism of the Karatash massif. International
>Geological Review 30, 878-888. Nockolds, S.R., Knox, R.W., Chinner, G.A.,
>1978. Petrology for Students. Cambridge University Press, Cambridge, 340
>pp. I would like to add two references of this rare assemblage
>documented in the Ayakhtinsk aureole, Russia: Likhanov, I.I., Sheplev,
>V.S., Reverdatto, V.V., Kozlov, P.S., 1998. Contact metamorphism of
>ferriferous metapelites at relatively high pressure in the Trans- Angara
>region, Yenisei Ridge. Transactions (Doklady) of the Russian Academy of
>Sciences/Earth Science Section, 1107-1110. Likhanov, I.I., Sheplev, V.S.,
>Reverdatto, V.V., Kozlov, P.S., Kireev, A.D., 1999. The isochemical nature
>of the contact metamorphism of high-alumina metapelites in the Ayakhta
>granitoid massif, Yenisei Ridge. Russian Geology and Geophysics 40, 91-98.
>All the best with the work, Igor Dr. Igor I.Likhanov
>Senior Researcher
>& Petrography
>Siberian Branch Russian Academy of Sciences
>Acad. Koptyug Ave. 3
>Novosibirsk, 630090, Russia
>Tel. office: 07 3832-333672
>Tel. home: 07 3832-111574
>Fax: 07 3832-332792
>e-mail: [log in to unmask]
>
David R.M. Pattison, Department of Geology and Geophysics,
University of Calgary, Calgary, Alberta, T2N 1N4, Canada.
Phone: 403-220-3263 (my office); 403-220-5841 (dept. office)
Fax: 403-284-0074 email: [log in to unmask]
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