New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1851-05-08
Quartz Mining In California.

A valuable Report on the Quartz bearing locali'
ties of the first range OF the Sierra Nevada has
been made by Sir HENRY WERE HUSrLY, to the
Directors of the anglo California God-HniDg
and Dredging Company an English Company
by which Sir Henry was commissioned to make
the tour of the Gold Region. We CLEAN from the
Report fe ~ interesting facts. From the ln'or-
nation obtained by this skillful investigator he
was led to believe tbatthere is scarcely one OF the
quartz veins in the district of California, between
the head waters OF the stanislaus and those OF
the Tuoumne, Mercedes and MaripOsa that does
not produce Gold more or less. The veins actual
" opened upon the Mariposa were found remarka-
bly, rich, and indicated . -~-t Prsvalsn"S ~ Gold
in the Quartz rock from the earliest period. When
this is connected with the certainty of no Gold
being present in any part OF the vast plains spread
out between the several mountain ranges, 1t con-
clusively points to the Quartz Rock as the source
from which vast riches may be obtained
The Nine of the Mariposa Company, on the
Mariposa River, contains a vein, running nearly
parallel with the River, which has been opened
downward to the depth Of twenty-five feet for
distance of two hundred and fifteen feet and up
ward Its average thickness is from ak - nine
feet though in many places over twelve feet
and tits very moderate calculation TO say that
upward of $4,000 cubic feet are in sight. From
experiments made with a Gillian mill, by horse
power, the frst 600 lbs OF average ore yielded
$40; 500 lbs. of another lot, sl25. From many
other trials it has been from twenty-five to twen'
weight cents per pound, though much OF the ore
A.. anla
steam power was put in operation, in the month
of September last, and the present expense o.
working the Mine is about $500 per day night
work would increase This amount to $3.50. 1t Is
supposed that about twenty tuns OF ore can be
reduced in twenty four hours, or 400 miners bush
els, which, at the rate Of the poorest ore, will
make large sum per week. The approach to
the mine from the seaboard is good. The Com
papy are projecting works for large future opera
tions.
The Aqua Fria Mine is situated about seven
miles from the MaripoSa, and was opened by
party of FIVE young Engishmen and one Amer.
can. 1t has not been opened in length above If
teen feet, and in depth above four; il bears every
indication OF very great richness.
In company Win EIOi' DnePaiN' IA
eeoogist, Sir Henry Hunter proceeded to ex-
anime some Quartz veins upon the property
claimed by Col Fremont. A location was select
ed about half mile from the Stockton and AsPin-
wall Mine, ION the other side Of the mountain In
which that of the Aariposs Company is stuatedJ
and the character of the vein was highly approved
Sir Henry reports to the Directors that the
privilege of sharing in the Manposa Nine Will be
from f25OOO TO flOO 900, according to the quan-
tity Of interest purchased, and states that the
least expensive method of proceeding with the
mines on Col. Fremonts property would be
lease of them. Prior to Sir Henrys departure
from San Francisco, a second Expedition had
arrived, and both companies continue employed
nj thu MariDosa Nine.