MISCELLANEOUS MINERALS. 307 
The statistics for Lincolnshire include works now, or formerly in operation, 
and known as the Appleby, Caythorpe, Claxby, Crosby, Frodingham, Glebe, 
Midland. Greetwell, Gunbouse, Normanby, Trent, Warren, and Woolsthorpe 
works. They include therefore, the iron-ores obtained from the Neocomian 
Beds, and the Northampton Sands (Dogger), as well as from the Lower and 
Middle Lias. 
The statistics for Leicestershire include the works at Eastwell, Eaton, 
Harston, Hoi well, Waltham, and Warnatby ; and they include iron-ores from 
the Northampton Sands and Middle Lias. 
[See Mineral Statistics of the United Kingdom, prepared by Her Majesty's 
Inspectors of Mines.] 
Ochre. 
Ochre has from time to time been worked near East Harptree. 
It was obtained from the ferruginous arenaceous and cherty beds 
of the Lower Lias and Hhaetic beds. The material was found in 
seams between the layers of stone, and in pockets associated with 
the cherty beds ; and more profusely in clayey beds that underlie 
the main mass of stone, as well as from the Dolomitic Conglo- 
merate. (See p. 124.) De la Beche has thus referred to the 
beds. " The upper or arenaceous beds have been so impregnated 
with silica, that a kind of arenaceous chert is the result, some of 
the cementing matter being so highly charged with peroxide of 
iron, that upon decomposition of part of the rock, excellent yellow 
ochre is obtained by the ordinary washing and depositing pro- 
yyg. * 
cesses. * 
Near the railway station at King's Sutton, there were (in 1887) works 
belonging to the " Anti-oxide and Colour Company," where pigments were 
manufactured. Material had been used from Adderbury, but the ochre from 
the Middle Lias proved to be too siliceous, and the ingredients were then 
obtained from the neighbourhood of Manchester. 
Miscellaneous Minerals. 
Of various minerals, some occur in a detrital form in the rocks, 
while others are due to chemical changes in the mass of the 
strata, or they occur in joints and crevices of the rock from the 
infiltration o waters holding various substances in solution. 
But little is at present known with regard to the minor mineral 
ingredients of the Liassic rocks. Mica is present in most of them. 
Galena has been found in small quantities in the Sutton Stone 
(Lower Lias, of Glamorganshire), where it is mostly in a detrital 
condition, being derived from the Carboniferous Limestone. Blende 
has also been noticed. (See pp. 98 and 102.) 
Manganese-ore has been detected in small quantities in the Lias of Frocester 
and Ilminster, and in the form of Rhodonite, it has been recorded from the 
Middle Lias of Churchdown and Gretton.f Belemnites also occasionally 
contain traces of this ore in their composition. J 
Specular Iron has been noted by Prof. Judd, in nodules of ironstone from 
the Middle Lias. Of other iron-ores Earthy Carbonates of iron, Limonite, 
and occasionally red Hcematite are found : but the more extensive beds of 
ironstone have already been mentioned. 
* Mem. Geol. Survey, vol. i. p. 277. 
f F. Smithe, Proc. Cotteswold Club. vol. viii. p. 33. 
J. S. Miller, Trans. Geol. Soc., ser. 2, vol. ii. p. 46. 
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