New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1847-01-04

has the President urged Congress to authorize the
sale Of the Mineral Land, yet Congress does no
thing Mining on lease from the Government new
er has worked well, and We think never viii Let
Congress limit the area Of these lands which any
person or frm may acquire deal as rigidly with
the leaseboders and other claimants Justice
will wausnt-in short, take all due precaution
against monopoly and rspaoity bat let 1t to
the Miners the present and enduring benefit Of
their own expenditures and labors. Above ALL
whatever it deems just tina, let il do quickly But
10 the extract
The body Of Lake Superior occupies area Of
about &c 200 square miles while its margin presents 10
the Geologist the astonishing spectacle Of its having
been formerly vast laboratory for the fabrication OF
netslliferous vens The stratihed rocks around the
lake dip toward ts center at angle varying from hve
10 forty FIVE degrees while from it, center generally
night angles 10 the coast may be radsting
spar veins generally vertical sDd scale gi-
gantc the Lake itself And what s remarkable in
gard these 10 that they cut boldly through ssys
ten OF powerful trap dkes OF older date which traverse
the country in direction at right angles TO the general
OF the veins Thereby showing the modern orr
gin the veins and also the apparent powerful gslvsnic
influence in the deposition of metals different points
The straiifed rocks however give place 70
of violent disturbance ana powerful erupre agency by
which numerous disocations rents and hssures have
been produced and are generally hled with breceised
and sparry matter frequently containing copper
From these points the rocks continue 10 change until
they present q stupendous exhibition OF metamorphism
and mine rail- alton extending A wide area. Among
these rocks may be OF granite syen ie snd
porphyry piercing and eeyating he micaceOus. chiort
c and tacOse schlsis and kiiasi together with green
stone bash aygda old and other varieties oi trap ire
ouenty oyerayng sand stones lime stones,
.ates shses The granite in places seems to
effected the agency the trap In other places
The trap has dip and qualification similar to the con
glomerate aud sand stone beneath IT, There are also
wrinkles and arrows the surface OF the nerstraied
amyg1nlOd plainly indicating successive overnows OF
PutOnc matter yet the whole, as before remarked IRA
vefsed with dikes and veins almost innumerabie The
veins composed chiefly Of calcireous spar launont
uor SPAR anethysiine quartz and suphaie Of barytc
Their accompanying minerals usually prehnc, still
bite dathOe, anacine and steate, which latter ire
quenty occupies the sides OF the veins and greatly iac
tates excavation, especially IN the amygdaoid these
veins are often richly loaded with the mundc, eOssan
brent and pryan Of The Cornish miners. and in their
nerous yugf and cavities found native copper native
silver the green and blue carbOnate of copper the yell
low pyrtes but abundant than all the horse flesh
and rich gray ulphuret Of copper The above appear
designed 10 be more particularly descriptive Of
the Northern British side of Lake Superior, which
presents far interesting external indications the
coast and also far greater facilities for mining than the
opposite American shore On the American Southern
Shore the mineral region s with few exceptions dest
iute of hsrbors and the shore generally low While the
British side presents upon the coast highly elevated
gon with spontaneous drainage fortunately ndented
with bays end clustered with islands as TO Afford the
desirable harboTs and the safest anchorage. AS 10
the age of the rocks nothing is yet certain The APP
pesrance of fucod is reported in the lower shaes in
distinct sigaria &c in the jaspideOus chists of the
congomerste but not sufficient TO identity any psrcu
lar period II is presumed however that the valuable
and pcrscverng researches of w. +. LOGAN Esq Pro-
vncia Geoogst will in due time arrange them in their
proper order. The amygdules OF the trap made up
of agates comedians, SC. which often give place TO
chorite stestte, carbonate OF lime quartz and native
copper Numerous goodies of prehnitc ana laumonite
also contain native copper Much of the rock is in
state OF decomposition and there is consequently
great inequality Of surface The hills rise from the
hight of few yards TO that of one thousand feet
more. The rivers from the interior How in torrents 70
the lake and thereby afford mill seats The
soil upon the trap formation is rich and fertile and
tsns dense growth OF spruce, fir, cedar larch tam
arack white birch, poplar and pine sufficient it is be
ieved, for all mining and building purposes