1858.] SMYTH IRON-ORES. 107 



A large proportion of the red ore or haematite is also mingled in 

 the Hoar Oak veins, and in Rogers's and other lodes in the Deer- 

 park, near the surface. The main portion, however, of their con- 

 tents, particularly distinct in the numerous parallel lodes which 

 occur in the Deerpark, situated about one mile and a quarter south 

 of Simonsbath, consists of brown or hydrous peroxide of iron, in a 

 state of great purity, as evinced by the millions of little prismatic 

 crystals of " goethite" lining the interior of numerous cavernous 

 hollows which are interspersed amid a mass bearing evidently the 

 general rhombohedral structure of sparry iron. 



Mr. Eiley's analysis of the ore of " Rogers's lode" is as fol- 

 lows : — 



Peroxide of iron 71*34 



Peroxide of manganese 16*79 



Silica 1-49 



Alumina 1*10 



Lime 0*13 



Magnesia 0*22 



Phosphoric acid 0*33 



Combined water 7*98 



Moisture 0*79 



Oxides of nickel and cobalt 0*19 



Oxide of copper 0-05 



100*41 



The workings in this latter lode have proved it to consist, in a 

 width of from 2 to 13 feet, averaging probably 9 feet, of a loosely 

 agglomerated goethite, with much the same character throughout, 

 occasionally intermingled with bands of quartz and fragments of 

 the adjoining slate-rock. 



At Hangley Cleave, on the extreme south of the moor, a vein, 

 15 to 20 feet wide, of botryoidal and cavernous brown-ore inter- 

 mingled with quartz and slate is succeeded, at the depth of a few 

 fathoms only, first by single nuclei, and further by masses, of a pale- 

 coloured and compact sparry ore. 



The most extensive operations have been carried on at Raleigh's 

 Cross, in the Brendon Hills, where the lode, from 2 to 20 feet wide, 

 dips 45°, and, as it approaches the west, 65° south ; in the foot- 

 wall it carries a rib of quartz 3 to 6 feet wide, and in places is so 

 much occupied by the same mineral, as, for fathoms together, to be 

 useless as an iron-lode. Its ore is mostly a cellular cavernous mass 

 of brown iron, with occasional portions of goethite ; whilst, at the 

 depth of 140 feet from the surface, irregularly isolated masses of 

 sparry iron-ore come into sight, and indicate that the whole lode 

 once consisted of that mineral. 



At Goosemoor, a little further west, a deep level has iritersected 

 a vein, which, although opening and closing in courses of lenticular 



