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On the Processes by which a Plagioclase Felspar is converted into a Scapolite

Published online by Cambridge University Press:  14 March 2018

Extract

Few mineralogical problems are of greater interest at the present time than those connected with the metamorphism of rocks. We are called upon to determine the exact series of processes by which a rock, having a particular texture and consisting of certain mineral species, is converted into a totally dissimilar rock, possessing, not only a different structure, but a distinct mineralogical constitution.

Type
Research Article
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1889

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References

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page 186 note 2 Nyt. Magazin for Naturwidenskaberne. Bd. XXIII. (1877) pp. 75-77, T. II. Fig. 4.

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page 187 note 2 Geol. Fören. i Stockholm Föhr. Bd. VI. (1883) pp. 447-498.

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page 189 note 1 Compare the case of Calcite described in Min. Mag. Vol. VII. (1887), p. 87.

page 189 note 1 Loc. cit. p. 89.

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page 190 note 2 The Canadian Record of Science 1889.

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page 190 note 4 Loc. cit. p. 194.

page 191 note 1 Loc. cit. p. 193.

page 191 note 2 It is worthy of note that MM. Michel Lévy and Lacroix have found that there arc great variations both in the refraction and double refraction of the different mixtures of the meionite and marialite molecules (Les Minéauux des Rochet 1888, p. 293).

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