The daily exchange. [volume] (Baltimore, Md.) 1858-1861, 1861-03-21
NEW MINERAL DISCOVERIES IN CALL
FORNJA


A recent number of the San Francisco Alta Cal
gOrnia furnishes accounts of new and extraordina-
riy rich veins gold and silver ore that have late
y been brought to light the eastern slope of the
Sierra Nevada range. Mines that bid fair to equal
If not surpass anything in the history of California
are now being opened up in Mariposa and Tulare
counties in the southeastern section of the State.
In the Coso district in the eastern portion of Tu-
lare county, the gold and silver have assayed
at the rate of 81 500 to $4,000 per ton from pieces
clipped off from the weather-worn out-croppinps
with sedge hammers, crow-bars, &c. But as if
this were not enough to excite the cupidity of lu
cre-loving humanity, startling discovery of gold
anc silver bearing antimonia ore has recently been
made, specimens of which have been assayed at
San Francisco, and yielded the astonishing amount
of more than sixteen thousand dollars to the ton!
This extraordinary 'lead" is in the hands of parties
who, naturally enough, do not court publicity in
regard to the locality of their splendid prize.
Besides these dazzling discoveries, the Mono
Lake district, which is located at the junction of
Calaberas, Mariposa and Fresno counties, is known
to be prolific field for mining operations, both in
silver and gold, while it has been demonstrated
that the vast mountains OF quartz which comprise
the greater portion of Mariposa county known for
their prolific gold YIELD are even richer in silver
rich vein of silver has been traced across the
northeastern section of Mariposa county on both
SIDES OF the mountain range, which leads to the
oeef that 1t is the initiative of vast bed of sill
yer ore on the west side OF the Sierra In Calave-
rss county numerous discoveries of extraordinary
richness have been made and it is further stated
that discoveries have been made as far east as the
Mohave and Colorado rivers which promise to be
of vast Importance.
The silver lead in Mariposa county has some
what romantic history, as told by the Alta:
"This silver lead, it is stated, was discovered in
1856. but the discoverer unaware of its nature
until last winter. In his wanderings about Mari-
posa, where he mined, he at different times pros
pected, carefully marking the rock he returned
with. In 1856 whilst hunting, he discovered what
he thought to be a lead mine. He pocketed the
prospect, but thought it of no value in comparison
with gold. In 1858 he went east, and remained
with his relatives taking with him his collection of
minerals and gold specimens. Last February he
specimen of Washoe ore at w. T. Coleman
& Cos.'s, in Wall street, and remarkiup the re-
semblance to his lead specimen, procured a piece
to compare with his own He was so well satisfied
that they we're identical in nature that he had each
each assayed, and his lead specimen proved to be
rich silver ore. Keeping his own counsel, he re-
turned to California last spring, and has spent the
intervening time in retracing his footsteps over
tne chemlcal and chapparrel hills of Mariposa and
MS Investigations have resulted in his discovery as
above named"
Mining and scientific parties are now engaged in
exploring these new mineral regions, and the stream
OF adVenturers is already setting eastward across
the Slerras, from the southern country, and next
spring and summer the whole region will be filled
up with eager treasure-hunters.
From these new discoveries California derives
additional resources and importance. Fresh streams
OF emigration will pour into the State, and new
and increased impetus will impaired to its INDUS
trial and commercial activity, while the commerce
of the world will be stimulated by the increased
production of the precious metals.
We understand, says the National htelligencer,
! that at noon, ON Tuesday, Captain Meigs, with
Messrs. Myers and Frost, Assistant Engineers hav-
ing proceeded to the site of the Distributing Reser
| vnir of the Washington AQueduct formally raoon,