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Conchite, a new Form of Calcium Carbonate1

Published online by Cambridge University Press:  14 March 2018

Agnes Kelly
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Extract

In the course of an investigation on calcareous secretions in the animal kingdom, and more particularly on molluscan shells, I found that the latter did not consist of aragonite, as G. Rose and Sorby had supposed, but of a negative, uniaxial mineral, which is distinguished by most of its properties from calcite, and for which I propose the name conchite (KóγXη, shell). I further found that conehite occurred naturally in many localities--always as a crystal aggregate. Its properties were investigated on such, as well as on the eonchite in shells.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 12 , Issue 58 , November 1900 , pp. 363 - 370
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1900

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Footnotes

Communicated by Prof. H. A. Miers.

1

A communication on couchite was laid before the Bavarian Academy on 5th May, 1900, and afterwards published in the Sitzungsberichte der math.-phys. Classe of that Academy.

References

page 363 note 1 A communication on conehite was laid before the Bavarian Academy on 5th May, 1900, and afterwards published in the Sitzungsberichte der math.-phys. Classe of that Academy.

page 363 note 2 G. Rose, Vorkommen des Aragonits und Kalkspaths in der organischeu Natuv; Abh. k. Akad. d. Wiss in Berlin, 1858.

page 363 note 3 Sorby, Presidential Address, Quarterly Journal of the Geological Society, 1879.

page 364 note 1 Geological Magazine, 1888, p. 66. "On the Mineralogical Constitution of Calcareous Organisms."

page 364 note 2 Ueber die Bildung des Dolomit. Tscherm. Min. Petr. Mitt. 1895, XIV, 526.

page 366 note 1 Ueber den Einfluss der Lösungsgenossen auf die Krystallisation des Calcium carbonats, Theil 1I, Zeitsch.fi Kryst. 1894, XXII, 209; Theil IV, 1895, XXIV, 378.

page 366 note 2 Zeitsch.f. Phys. jhemie, 15th June, 1900. "Uber die physikalich-chemischen Beziehungen zwischen Aragonit und Calcit."