Notes on mineralogy. No. VIII. On the felspar and mica of the granite of Canton / by Samuel Haughton.

  • Haughton, Samuel.
Date:
[1859]
Catalogue details

Licence: Public Domain Mark

Credit: Notes on mineralogy. No. VIII. On the felspar and mica of the granite of Canton / by Samuel Haughton. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    From the Philosophical Magazine for April 1859. NOTES ON MINERALOGY.—No. VIII. ON THE FELSPAR AND MICA OF THE GRANITE OF CANTON. BY The Rev. SAMUEL HAUGHTON, M.A., F.R.S., FELLOW OF TRINITY COLLEGE, AND PROFESSOR OF GEOLOGY IN THE UNIVERSITY OF DUBLIN. THE granite of the neighbourhood of Canton is composed of grey quartz, a light flesh-coloured or creamy-white felspar, in large crystals, and a black glossy mica (crystals f by i inch) imbedded in the felspar and accompanied by quartz. The following analyses will show the chemical character of these minerals:— Felspar of Canton Granite. Per cent. Atoms. , 64-48 1-433 Alumina . 19-12 0-367 Peroxide of iron . . 0-56 0-007 0-45 0-016 Magnesia . trace 12-52 0-266 . 3-24 0-104 Loss by ignition . . 0-16 100-53 0-374 0-386 From the preceding analysis may be deduced the following relation among the atoms of silica, peroxides, and protoxides ;—