The Anaconda standard. [volume] (Anaconda, Mont.) 1889-1970, 1899-12-05

ment in mines, and this winter will see
there.
The Mining Investor says that inquiry
among the more prominent shippers, rail-
road men and ore buyers as to the
months output resulted in information
which points to a new record for Grip
pie Creek Although two-thirds of the
month is wiped off the cal s.-sar all three
authorities are agreed tina. in no like
period has so much ore been handled or
has there been a heavier tonnage await
ing shipment. The most conservative es-
innate surpasses October's production
and there is little question but that the
total for the month will pass the long
desired two million and a half mark.
The Concentrate" page of the last Min
ing and Scient' tic Press of Nov. % is an
especially interesting and Instructive one.
the three items Immediately following
and some others in this column Were ia
ken from that page.
The mines of Gilpin county. Colorado,
have produced in the past 40 years more
than $4,000 900. Most of the ore shoots
outcrop at the surface. Rich discoveries
are not of uncommon occurrence in the
district now. The veins are of the fissure
type, continuous both longitudinally and
in depth. The veins are divided into
collaborating and silver-bearing lodes.
Where these merge into each other the
values are found in both metals. The us
ual proportion of gold to silver in the
mines of the county is five ounces of sill.
yer to one of gold. though in the silver
belt proper the ores carry little or no
gold The veins lie in two systems-one
striking east and west. the other north
nIx Of
tandesite) accompany many of the veins
of each system. The dykes frequently
form wall of the vein. and it is stated
that a departure of the vein from the
dykes is marked by a low tenor of the
ore
The geology of the Cripple Creek. Colo,
region has been described by Whitman
Cross as a group of rounded hills seven to
twelve miles west of Pixies Peak 5000
to 10000 feet above the sea. These hills
consist almost entirely of volcanic rocks
and indicate the successive phenomena OF
a volcano the principal material being
brecca, or tuff resulting from a success
sion of explosive outbursts, while the ig-
neous magmas erupted were, first, ande-
site; then phon0lite lin numerous erup-
tons, alternating with explosive out
bursts; and finally number of highly
basic eruptions in small dykes. Gaseous
tSH4idtioHS prayed q part at certain Pc
RODS and later hot waters circulated
through the mass and decomposed the
rocks to a great extent. The formation
through which the Cripple Creek volcano
burst. and upon which it's superficial ma
terials lie, is granite gneiss. Since the
close of volcanic activity these hills have
been greatly modified by erosion.
Lyddite the high explosive, is picric
acid in a soldified state. Picric acid was
first made in III. and was for more than
a century used as a dye without its ex-
plosive qualities being even suspected. If
lyddite be heated gently 1t may be pour
ed from one vessel to another with safety.
If heated over an intensely hot fire it
chars with a slight fzzle. If pounded
on an anvil there is no explosion. When
a detonator is exploded in contact with
it the explosive force of lyddite is riber-
ated. This detonator is sensitive body
which explodes with great violence, and
in practice it is not placed in the lyddite
shell until the gun is about to be fired.
In making lyddite carbolic acid and sui
phuric acid are mixed in equS proper.
tions and the temperature raised to the
boiling point, when nitric acid is allowed
to flow into the mixture. The yellow
crystals which form in the bottom of the