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On aluminous and edenitic hornblendes

Published online by Cambridge University Press:  05 July 2018

Bernard E. Leake
Bernard E. Leake*
Affiliation:
Department of Geology, University of Bristol, Bristol 8, England
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Summary

Based on nearly 1500 published amphibole analyses the maximum possible Alvi in hornblendes is shown to increase with increase of Aliv. New analyses of hornblendes from amphibole-corundum rocks, with and without anorthite, are given and after critical examination of the available data it is concluded that the maximum verified Alvi-rich calciferous amphibole that approaches the closest to hypothetical tschermakite comes from a kyanite-bearing aluminous high-pressure-crystallized schist from Lukmanier, Switzerland. Pure natural edenite or ferroedenite is unknown, but a new analysis of the nearest known natural edenite, from Mysore, India, agrees with the postulated view that extraordinarily low temperatures are needed for edenite-ferroedenite crystallization, much below that possible in magmas and only rarely achieved in metamorphic rocks containing amphiboles. The limit of the approach of igneous hornblendes to edenite-ferroedenite and tremolite-ferroactinolite is outlined.

At least 1100 °C is required for complete expulsion of water from some amphiboles.

Type
Research Article
Information
Mineralogical Magazine , Volume 38 , Issue 296 , December 1971 , pp. 389 - 407
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1971

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References

Bakun-Czubarow, (N.), 1968. Archiwum Min. 28, 305.Google Scholar
Banno, (S.), 1964 Journ. Fac. Sci. Univ. Tokyo, Sec. II. 15, 231.Google Scholar
Bearth, (P.), 1967 Beitr. Geol. Karte Schweiz, N.F. 132 , 89.Google Scholar
Colville, (P.A.), Ernst, (W.G.), and Gilbert, (M.C.), 1966. Amer. Min. 51, 1727.Google Scholar
Cooper, (A.F.) and Lovering, (J.F.), 1970. Contr. Min. Petr. 27, 18.CrossRefGoogle Scholar
Dodge, (F. C. W.), Papike, (J.J.), and Mays, (R.E.), 1968. Journ. Petrology. 9, 392.CrossRefGoogle Scholar
Ernst, (W.G.), 1968. Amphiboles. (Berlin) Springer Verlag.CrossRefGoogle Scholar
Forestier, (F.H.) and Lasnier, (B.), 1969. Contr. Min. Petr. 23, 194.CrossRefGoogle Scholar
Frey, (M.), 1969. Beitr. Geol. Karte Schweiz, N.F. 137, 68.Google Scholar
Ghose, (S.), 1965. Min. Mag. 35, 46.Google Scholar
Harry, (W.T.), 1950. Ibid. 29, 142.Google Scholar
Haslam, (H.W.), 1968. Journ. Petrology. 9, 97.CrossRefGoogle Scholar
Kostyuk, (E.A.) and Sobolev, (V.S.), 1969. Lithos. 2, 67.CrossRefGoogle Scholar
Kreutz, (S.), 1968. Sitz. Akad. Wiss. Wien. 117, 875.Google Scholar
Laitakari, (A.), 1920. Bull. Comm. Gdol. Finlande, 10, No. 54, 59.Google Scholar
Leake, (B.E.), 1962. Jap. Journ. Geol. Geogr. 23, 1.Google Scholar
Leake, (B.E.), 1965. Amer. Min. 50, 843.Google Scholar
Leake, (B.E.), 1968. Geol. Soe. Amer. Special Pape. 98, 210.Google Scholar
Leake, (B.E.), 1968. Scot. Journ. Geol. 4,287.CrossRefGoogle Scholar
Lewis, (J. V.), 1896. Trans. Amer. Inst. Min. Eng. 25, 65.Google Scholar
Nockolds, (S.R.) and Mitchell, (R.L.), 1948. Trans. Roy. Soe. Edinburgh, 61,560.Google Scholar
Palache, (E.), 1935. U.S. Geol. Surv. Prof. Pape. 180, 73.Google Scholar
Rajulu, (B. V. G.) and Shariff, (A.), 1966. Proc. Indian Acad. Sci. 63A, 361.CrossRefGoogle Scholar
Raychaudhuri, (B.), 1960. Ph.D. thesis, California Inst. Technology.Google Scholar
Riley, (J.P.), 1958. Analyst. 83, 42-9.CrossRefGoogle Scholar
Saxena, (S.K.) and Ekstrom, (T.K.), 1970. Contr. Min. Petr. 26, 276.CrossRefGoogle Scholar
Sen, (S.K.), 1966. Bull. Geochem. Soc. lndia. 1, 128.Google Scholar
Steiger, (R.), 1961. Schweiz. Min. Petr. Mitt. 41, 151.Google Scholar
Troll, (G.), 1968. Bayer. Akad. Wiss. Mat.-Nat. KI. N.F. Heft 133.Google Scholar
Vande PUTTE, (R.), 1939. Bull. Mus. roy. Hist. nat. Belg. 15, No. 31, 8.Google Scholar
Watanabe, (J.), 1965. Journ. Geol. Soc. Japan. 71, 129.Google Scholar
Wright, (A.E.) and Bowls, (D.R.), 1968. Bull. Volcan. 32, 15.CrossRefGoogle Scholar