The Cordova daily times., 1919-01-16
Mine STATION
TO ASSAY FOR
PROSPECTORS

and mining men. A cumulative analy-
and reports the exact amount of given
metal, or metals, that may be present
in a sample, as distinguished from an
identification test. in which the pres
enCe or absence. but not the quantity.
of minerals or metals is determined
An identification test might show
that an ore contains copper. for in.
stance. and under favorable circum-
stances might give a rough estimate
of the amount. but in order to find
the exact amount quantitative an
alysis or assay must be made.
A nominal charge is made of 81 for
each metal in a sample determined
by cumulative analysis or assay
That is, if gold alone Tor any one
other metaD is required. the charge
would be 81. If both gold and silver
Tor any two other metals) are re.
quested the charge would be 81 Any
three metals. SO. etc. These charges
are payable in advance.
This work will not interfere il any
way with the service previously fur.
nished by the station. that of making
free identification tests of specimens
There will be no charge for sucb tasts
in the future as In the MAST
Ordinarily, in making free identif-
cation tests, only such metals or min.
erals as have a present or probahlr
future economic yalua are soupbt for
and reportod If bowavar idon,iGc,.
ton tests for other metals and min.
erals are desired, and if il can he
shown that such tests for other min
erals would serve anv useful mrnosn
commensurate with the extra work re-.
quirrd they will GLADLY, hn modo fr.o
of cost.
In the case Of gold siIvnr and rl,t.
mum in specimens submitted for free
identification tests no report is made
unless they have been detected Inv
panning. because these mtals invari.
ably occur in rocks and specimens in
such small quantities. when compared
with the quantity of the rest nj tho
specimen. that il il imnossih,e to
identify them by the chemical methods
used in making the Identification
| tests The only way in which they
can be determined Is bv making nm
assay. for which fee is charged as
stated above. If. however, the char
acter and appearance of the specimen
indicate the probability that gold sill
yer or platinum may he prasant in
sufficient quantity to Justify the OK.
pense of an assay, the person sub.
hitting the specimen will be notified
so that ne can say whether he wishes
an assay to be made.
Persons mailing samples for uuan.
| titative analysis or assay or sppci-
mems for identification tests to this
station should be governed by the fol
lowing Instructions
The quantity of such sample or
| SPN'iiiit SHOulu not De less than one
quarter Of a pound and more than
two pounds is an unnecessary excess.
Each different sample or specimen
should be wrapped separatelv mr.
placed in separate sacks or contain
ers, and each sample or specimen
should be numbered in two places:
First on a slip of paper carefully
folded and inclosed with the sample
or specimen, and second on the out
side OF the wrapper containing the
sample.
All writing or descriptive matter
and instructions should be sent in
letter, which must not be inclosed in
the package containing the sample or
specimen, because the placing of the
iirst-class mail matter. that is to say. |
writing or description of any kind. in
parcel post mail matter is against
the law and suhiect IN oayara na,o1 |