H reprefents a fmall rake, or fcrin, of lead
ore, running nearly eaft and weft. It ranges
up the fide of the mountain, and on it are
a few ftiafts, thirty fathoms deep. It is.
worked open from the furface for a fmall
diftance. K is a rake vein larger than the
others, called Faucet, or forefide rake,
which has a diredion fouth, by 67° 30' eaft,
and north by b y^ o'tve ft: it ranges from
the top of the Long Cliff, to and acrofs the
Caftle hill. A ftratum of bafalt and toad-
ftone openly appears, about one hundred
yards to the north of the rake K, at a place
called Little Banks ; and I regret that it
cannot be reprefented in thefedion. R is
a fmall rake, or crofs vein, or fcrin, called
Rock Pipe ; which, however,takes the ufual
diredion of pipe veins. C is Long Cliff
Pipe, a fmall rake fcrin, but in a pipe diredion.
Many fmall veins crofs the mountain,
feveral of which are cut acrofs by the
Speedwell
Speedwell mine, as may be feen in the
plate.
The veins of ore in this mountain range
tinder the toadftone. On the furface öf thé
limeftone are frequently found quartzy cryf-
tals detached, lome pyramidal with ptifms.
They are called Derbylhire diamonds.
In the cave, or ravine, fouth of the
eaftle, on Cawler Hill, is an irregular
bafaltic column, appearing like a detached
mafs; and from it I have broken pieces
containing jafper, calcedoney, and quartz.
The outfide is decompofed. Adjoining
is a ftratum of toadftone, which is alfo
decompofed 5 it appears like indurated
clay, full of holes, with green globules, fpar,
&c. This ftratum ranges to the eaft and
fouth., and is of confidefable extent.
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