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A new locality for Voelckerite and the validity of Voelckerite as a mineral species1

Published online by Cambridge University Press:  14 March 2018

Austin F. Rogers
Austin F. Rogers*
Affiliation:
Mineralogy and Petrography, Leland Stanford, Junior University, California
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Extract

In 1912 the writer proposed the name voelckerite (in honour of Dr. John Augustus Voelcker, the well-known English agricultural chemist, who made important contributions to our knowledge of the~ chemistry of apatlte) for the basic calcium phosphate, 3Ca2(PO4)2.CaO , related to apatite. The fact that apatite is often deficient in fluorine and chlorine was proved by Voelcker and by Hoskyns-Abrahall, both of whom gave as the general formula of apatite 3Cas(PO4)2.Ca(F2,C]2,O ) or its equivalent Ca10(PO4)6(F2,Cl2,O ). Carnot also noted the deficiency of chlorine and fluorine in apatite from Tyrol, but he offered no explanation.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 17 , Issue 80 , December 1914 , pp. 155 - 162
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1914

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Footnotes

1

With the addition of some new observations, this paper presents in an amplified form a portion of the material of the author's earlier (1912) paper on the minerals of the apatite group.—Ed.

References

page 155 note 2 A. F. Rogers, 'Dahllite (podolite) from Tonopah, Nevada ; voelckerite, a new basic calcium phosphate ; remarks on the chemical composition of apatito and phosphate rock. Amer. Journ. Sci., 1912, ser. 4, vol. xxiii, pp. 475-482 ; translation in Zeits. Kryst. Min., 1913, vol. lii, pp. 209-217.

page 155 note 3 Voelcker, J. A., Ber. Deutsch. Chem. Gesell., 1883, vol. xvi, p. 2460 CrossRefGoogle Scholar.

page 155 note 4 Hoskyns-Abrahall, J. L., Inaug.-Diss., Munich, 1889. Abstract in Zeits. Kryst. Min., vol. xxi, p. 389Google Scholar.

page 155 note 5 Carnot, A., Bull. Soc. franç. Min., 1896, vol. xix, p. 135 Google Scholar.

page 155 note 6 Rammelsberg, C. F., Neues Jahrb. Min., 1897, vol. ii, p. 37 Google Scholar.

page 156 note 1 Groth, P., 'Tab. Uebersicht der Mineralien,' 4th edit., 1898, p. 87Google Scholar. Note also Groth's remark (speaking of apatiCe), 'Die Existenz freien CaO ist theoretisch hochst unwahrscheinlich, dagegen ware eine Ersetzung von Fl durch He wahrscheinlich.' (Zeits. Kryst. Min., 1886, vol. xi, p. 107.)

page 156 note 2 Penfield, S. L., Amer. Journ. Sci., 1878, ser. 3, vol. xvi, p. 45 Google Scholar ; 1879, vol. xviii, p. 295 ; 1886, vol. xxxii, p. 107 ; 1894, vol. xlvii, p. 387.

page 156 note 3 Jannasch, P. and Locke, J., Zeits. Anorg. Chem., 1894, vol. vii, p. 154 CrossRefGoogle Scholar.

page 156 note 4 Penfield, S. L. and Minor, J. C., Amer. Journ. Sci., 1894, vol. xlvii, p. 388 Google Scholar.

page 157 note 1 Koenigsberger, J., Neues Jahrb. Min., 1901, Beil.-Bd. xiv, pp. 43–119 Google Scholar.

page 157 note 2 J. L. Hoskyns-Abrahall, loc. cit.

page 157 note 3 A.. Carnot, loc. cit.

page 157 note 4 In Rogers, A. F., Amer. Journ. Sci., 1912, vol. xxxiii, p. 479 Google Scholar.

page 158 note 1 Penfield, S. L., Amer. Journ. Sci., 1894, vol. xlviii, pp. 30–37 CrossRefGoogle Scholar.

page 158 note 2 The lead oxide and lime are probably superfluous, for the water content is no greater with them than without.

page 159 note 1 See Allen, E. T. and Clemont, J. K., Amer. Journ. Sci., 1908, vol. xxvi. p. 101 CrossRefGoogle Scholar.

page 159 note 2 Smith, J. P., Proc. Amer. Phil Soc., 1907, vol. xlv, pp. 183–242 Google Scholar.

page 160 note 1 The voelekerite is also slightly soluble in hot water.

page 160 note 2 The results prove this precaution was unnecessary.

page 160 note 3 Turner, H. W., Amer. Journ. Sci., 1902, vol. xiii, p. 343 CrossRefGoogle Scholar.

page 160 note 4 Penfield, S. L., Amer. Journ. Sci., 1878, vol. xvi, p. 45 Google Scholar.

page 161 note 1 Penfield, S. L., Amer. Journ. Sci., 1899, vol. vii, p. 118 Google Scholar.

page 161 note 2 Smith, G. F. H. and Prior, G. T., Mineralogical Magazine, 1911, vol. xvi, p. 84 CrossRefGoogle Scholar.

page 161 note 3 Rogers, A. F., Proc. Amer. Phil. Soc., 1913, vol. lii, pp. 610, 612Google Scholar.