TAB. LXV, 



STRONTIA carbonata. 

 Carbonate of Strontia. 



Class 2. Earths. Order 1. Homogeneous, 

 Gen. 5, Strontia. Spec. 1 . Carbonate. - 



Div. 1. Crystallized. 



Gen. Char. Soluble in 200 parts of water at a tem- 

 perature of 60°. Separates from a saturated solu- 

 tion in nitric acid, in the form of rhomboidal 

 crystals. Promotes the fusibility of most other 

 earths. Most of its salts tinge flame red. 



Spec. Char. Combined with carbonic acid. 



Syn. Strontian earth combined with fixed air. Kirivan, 

 v. 1. 332. 

 Strontian carbonate. Haiii/, v. 2. 327. 



1 his curious mineral was found some time since at Stron- 

 tian in Scotland, in a lead mine which is now given up, as it 

 would not answer the purpose of the proprietors; but seems 

 not to have been suspected to contain a new earth until Dr. 

 Craufurd sent it to Mr. Kirwan in 1790. It was afterwards 

 examined by Dr. Hope and others. We do not know that 

 it has been found any where else. Its crystals are con- 

 fusedly grouped, more or less diverging from a centre. 

 They sometimes show the appearance of a six-sided prism, 



as Hauy has observed, 



