The silver state news. [volume] (Winnemucca, Nev.) 1907-1909, 1909-08-17
EXHIBITS FOR Los
ANGELES CHAMBER

Iportance in the United States which
has no public reference collection Of
minerals, ores and on-metallic geologic
products of ecomic Importance. Realiz-
ing the Importance such an exhibit
would be in stimulating public inter
est in mining matters, and feeling that
the Los Angeles Chamber Of Mines 10
the logical sponsor for such an exhibit,
the following plans suggested by the
Mineral Exhibit committee, have been
approved and adopted by the board Of
directors of the chamber.
1t is considered desirable to build up
in Los Angeles two distinct collections,
one an exhibit of economic geology, In
Guiding the ores, petroleum and other
economic productions OF the territory
tributary to Los Angeles; the other
mining exhibit, which shall show both
the commercial Importance and the geo
logy of the various mineral districts Of
the southwest.
This will be reference collection Of
the various ores arranged according to
the metal tor which they are valuable.
Each specimen will be authoritativeiy
identified both as to species and iocali-
ty, which data will be plainly exhibited
ON uniform label. The collection win
exhibit the following mineral and geo.
logic products: Petroleum and its pro-
ducts, clays, clay products and building
stone, cement rock, gypsum, graphite,
road metal, gems and gem-bearing
rocks, natural fertilizers and any other
geologic products that may be found in
the region tributary to Los Angeles.
For this exhibit the chamber desires
good sized specimens Of very high
grade ore to illustrate the several min.
erals which are valuable for the particu-
lar metal the contain. Example: Gale
mite, Ceruccite, Wulfenite, ETC., to rep
resent ores of lead native copper, mala-
chite, azurite, chalcopyrite, bornite,
euprite, etc., to represent ores of cop
|per.) In the non-metallic department
it will will be necessary to show the
raw material and W. at it is useful for
in the commercial world. examples:
Graphite and it's finished form as PEN
ellis, lubricant, paint, crucibles, stove
polish, etc.,
This collection will be exhibited On
tables and open to the close scrutiny Of
the public, as it is felt that tive nature
of the collection necessitates its exami-
nation at close range by those interest
ed in order to be OF full value. Az it
will contain no specimens of intrinsic
value, there should be no temptation to
pilfer, and the chamber anticipates that
the public will recognize the advantage
of this feature and protect the collec-
tion.
This exhibit will present, in groups,
specimens of the country rocks, or wsll,s
. of the ore deposits; samples OF the av-
erage ore as mined, and specimens Of
high grade ore, from the various mines
of the southwest. Such q group, repre-
senting each mine separately, will be
exhibited an a uniform card Of suitable
size. This card will bear large label
stating the name and location of the
mine, and each specimen will have .
separate label, stating in as few words
as possible, what it represents.
For this exhibit there will be desired
the following form each mine: Speci.
mems of the country rocks and walls Of
the ore deposits, taken where the rock
is fresh and undecomposed. If several
different rocks occur in the region Of
the mine they all should be represent
ed. These specimens should be Clipped
to uniform size of 3x3hx1h inches.
This should be done in the field where
there is plenty of material to select
from. The average ore of the mine
should be represented by several frag.
ments, rather than by a single speci-
men. The average assay value Of the
ore represented should be stated. Speci-
mems of the high grade ore can usually
J be trimmed to the aforementioned
size, but when this woula iniure q
specimen, the high-gra may be rep
resented by several fragments. This
: specimen must illustrate the "high-
grade - product of the mine, and must
not be confined to the finest specimens
available. 1t should be accompanied by
a statement of the general value of the
high grade product Photographs of the
out crops, or other vein exposures,
would be acceptable, and for the fling
cabinet, photographs Of the camp and
mine improvements would be greatly
appreciated. Each specimen must be
carefully identified as to what part Of
the mine it comes from ana wha. it rep