306 DOMAIN IV. TALCOUS. 



Aspect 3. Involved or contorted. White, from 

 St. Gothard. 



Of a silvery white, and light green, from the 

 same. 



Aspect 4. Mingled. Foliated talc, in small 

 plates, forming, with felspar and quartz, a very 

 large-grained granite. 



STRUCTURE II. MASSIVE. 



Massive talc, from the Alps of Dauphiny, com* 

 monly called chalk of Brian^on ; as vulgar appel- 

 lations are never precise, a soft steatite is some- 

 times sold under that name : but the French tailors 

 are not to be so deceived, and the genuine craie 

 de Brian$on may be had from them, leaving on 

 broad cloth a farinaceous illinition. It must how- 

 ever at the same time be observed, that when a 

 soft steatite is mingled with micarel, the impres- 

 ilojq will be somewhat similar to that of the chalk 

 of Dauphiny. Nay, micarel itself has been found 

 to decompose into -steatite*. 



The rock of soft scaly steatite, of a sea-green 

 colour, discovered by Saussure in the Roth-horn, 



* Gmelin, Linn. 69, describes the Creta Brianzonica as m\nu-- 

 fissime lamcllosiim; the soft steatite particulis impalpalililus. 



