APPENDIX. 
181 
E. 
MINERAL PRODUCTIONS 
OF 
WITH THEIR ECONOMICAL USES. 
Granite. — Found in massive rocks only, on tlie Malvern 
Hills, in this county. Its use is circumscribed to the foun- 
dations of buildings, walls, &c. The constituents of Granite^ 
Hornblende, Felspar, Quartz and Mica, in numerous varied 
masses occur along the whole range. Augite, Epidote, Stea- 
tite, Asbestos, and Sulphate of Barytes, are also met with in 
veins and fissures. 
Grauwack^. — The grits and sandstones of this formation 
are scarcely used for any other purpose than that of mending 
the roads, though tljjc lower beds furnish a stone used in 
foundations. 
Limestone. — This is abundant along the transition line, 
coloured dark green in the geological map. It is quarried at 
Mathon, Suckley, Leigh Sinton, Martley, and Abberley. 
The quarries at Dudley are well known. Limestone of the 
Lias formation occurs at Broughton Hackett and Cracombe. 
Mrs. Perrott observes that the lime made from this stone is 
extremely good, and chiefly employed to manure and 
lighten the land at the foot of the hill.'' 
CoaL — The great Coal formation of Staffordshire extends 
to Dudley and the Lye, near Stourbridge, in this county. 
Numerous iron-works and furnaces are consequently estab- 
lished here, and the existence of the Stourbridge clay, also, 
which is subordinate to the coal, and is celebrated throughout 
the world, has led to the establishment of glass manufactories 
to a great extent. Besides the coal above indicated, coal for- 
