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XVI. On the Chemical Composition of Epidote from Quenast

Published online by Cambridge University Press:  14 March 2018

Extract

This Epidote is found in the well-known quarries of quartziferous diorite at Quenast.

Without entering into any details regarding its crystalline form, it will suffice to mention that it here occurs in bacillary prisms, often elongated in the direction of the orthoaxis, and almost always macled parallel to the cleavage plane . It also occurs frequently in lamellar, fibrous and radiated masses of a pale green color, at times greyish or straw-colored ; these groups of crystals, which frequently occupy the geodes of the matrix, are capable of furnishing the mineral in a state of great purity, and well suited for chemical analysis.

Type
Research Article
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1881

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References

page 255 note (1) Dela Vallée et Renard. Mém. sur les roches pluton. Mém. Cour. de 1' Acad. Roy. de Belgique 1876-7, p. 21, et. seq.

page 255 note 2 Laspeyres. Min. Bemerk. V. Th. Die chemischen Untersuchungen der Epidot Gruppe. Zeitsch. Kryst. u. Min. III, 5 and 6.

page 255 note 3 Laspeyres. loc. cit pp. 533, et. seq.

page 256 note 4 The experiments upon the solubility of epidote in hydrochloric acid, which we shall detail at the end of this paper, will serve to prove that there was no quartz included in the mineral we analysed.

page 256 note 5 The water was determined according to the method devised by L. Sipöcz (Sitzungsber. d. K. Ak. Wiss. Wien. II, 1877).

page 256 note 6 Tsehcrmak. Die Feldspathgruppe. Sitzungsber. d. K. Ak. Wiss. Wien 50-585.

page 256 note 7 Kenngott. Ueber die Zusammensetzung des Epidots. N. Jahresb. 1871, p. 449.

page 256 note 8 Rammelsberg. Ueber die Zusammensetzung des Epidots von Sulzbach. Zeitsch. d. Deutsch. Geol. Gesell. 1872, p. 69.

page 257 note 9 Ludwig. Ueber die chemische Formel des Epidots. Ann. d. Chem. u. Pharm. vol 165, p. 217.

page 257 note 10 Rammelsberg. Ueber die Zusammensetzung der Epidot and Zoisit. Zeitsch d. Dentsch. Geol. Gesell. 24., p. 619.

page 257 note 11 Rammelsberg. Ueber die Zusammensetzung des Manganepidots. Monatsber. d. Berlin. Ak. 487.

page 257 note 12 Ludwig, . loc. cit. p. 223.Google Scholar

page 257 note 13 Rammelsberg, loc. cit. Zeitsch d. Deutsch. Geol. Gesell. 1873, 24. p 69.Google Scholar

page 258 note 14 Ludwig, loc. cit. p. 221.Google Scholar

page 258 note 15 For bibliographical references see Laspeyres' article p. 532.

page 258 note 16 Laspeyres, , loc. cit. p. 532.Google Scholar