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Published online by Cambridge University Press: 14 March 2018
The mineral kilbrickenite was analysed, described and named by Dr. James Apjohn in 1840. The specimens which he examined were sent to him by Mr. P. M. Taylor, who conducted the mining operations at the Kilbricken mine in County Clare, where the mineral was discovered. Apjohn's analysis showed the presence of lead, antimony and sulphur in proportions corresponding fairly closely with tbe formula 6PbS.Sb2S3. It was only in the preceding year that L. F. Svanberg had described a new mineral, geocronite, to which he assigned the formula 5PbS.(Sb, As)2S3. The announcement of this new mineral appears to have escaped Apjohn's notice, since geocronite is not included in the list of sulphantimonites of lead with which he concludes his paper.
Page 186 note 1 Proc. Roy. Irish Acad., 1841, vol. i, pp. 469-73.
Page 186 note 2 Kongl. Vetenskaps-Acad. Handl. (for 1839), Stockholm, 1841, p. 184 ; Ann. Phys. Chem. (Poggendorff), 1840, vol. Ii, p. 535.
Page 187 note 1 Atti Soc. Toscana Sci. Nat., 1901, Mem. vol. xviii.
Page 188 note 1 Ann. des Mines, 1840, ser. 3, vol. xvii, p. 525
Page 188 note 2 Geol. För. Förh. Stockholm, 1872, vol. i, p. 88.
Page 189 note 1 Recently W. Spring (Zeit. f. Anorg. Chem. 1901, vol. xxvii, p. 808) has given for the specific gravity of precipitated cuprous iodide the value 5.631, as the mean of four determinations, varying from 5.563 to 5.677, made on air-dried, on fused, and also on compressed material.