Crystallized Carbonate of Barytes Enlarge
Feb.y 1. 1805. Publiſhed by Ja.s Sowerby. London.
British Mineralogy
CIX
Barytes carbonata

Crystallized Carbonate of Barytes

  • Class 2. Earths.
  • Order 1. Homogeneous.
  • Gen. 6. Barytes.
  • Spec. 2. Carbonata.

I am indebted to the munifience of F. Hall, Esq., for some superb specimens of Carbonate and Sulphate of Barytes. Among them was the present specimen of Carbonate of Barytes; and as it is the first time that it has been noticed with elongated spiculæ so distinctly seen in hexaëdral pyramids, I am pleased at the opportunity of exhibiting a figure of them. They form an irregular echinated sphere, on a gangue of Galæna or Sulphuret of Lead: see the upper figure. They are found to be fusible by the blowpipe.

The lower figure on the right hand is a group of the spiculated crystals: on the left hand is a geometrical outline distinguishing the facets, three of which do not reach so high: sometimes these last are scarcely to be seen, and the spiculæ seem to have only three sides.

It is from Arkendale, near Richmond, Yorkshire.

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