1927 The Texas Almanac and State Industrial Guide Page: 250
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250 THE TEXAS ALMANAC.
northwest of Llano, but there are some
other excellent prospects, in the three
counties mentioned above. The metallic
content ranges from 25 to 65 per cent, as
in East Texas, but averaging somewhat
higher than the East Texas ores. There
has been no commercial development,
essentially because of the lack of coal
that can be coked. (See statistical tables.)
JET.-Jet, a rich black variety of min-
eral coal, used for ornamental purposes,
has been found in small quantities in
Presidlo County.
KAOLIN.-See Clays.
LIMESTONE AND LIME. - Excellent
limestone, adaptable to building stone
purposes and to the manufacture of lime,
is found oTer a wide area of Texas. The
chief limestone belt begins near the Red
River in the vicinity of Lamar, Grayson
and C)oke Counties and extends south-
westward through Denton, Collin, Dallas,
Tarrant, Palo Pinto, Johnson, Bosque,
McLennan, Williamson, Travis, Comal,
Blanco, Bexar and other counties of this
general region. Much good limestone is
found also throughout the Edwards Pla-
teau of Southwest Texas. Limestone is
found also in the territory west of the
Pecos River and in some localities
throughout' West Texas. There are lime
kilns at New Braunfels, Austin, Oglesby,
Round Rock and other points. Crushing
strength of limestone ranges upward to
10,000 pounds to the square inch. There
are limestone quarries in a large number
of counties, including Bosque, Comal,
Coryell, Crockett, Dallas, Eastland, Ed-
wards, El Paso, Erath, Hamilton, Jack,
Limestone, lMncLennan, Palo Pinto, Parker,
Runnels, San Saba, Shackelford, Tarrant,
Travis, Wichita, Wise and Young. (See,
statistical tables.)
LEAD.-There is a small production of
lead in Texas, nearly all of it coming
from the El Paso smelters, where it is
produced from ores in which it is found
in association with other minerals, prin-
cipally silver-lead ores. There has been
production of lead ores from the Quitman
Mountains in Hudspeth County, the Chi-
nati Mountains in Presidio County and the
Altuda Mountains in Brewster County.
Galena is found in Burnet and Llano
Counties in the Central Mineral Region,
and to small extent in Coleman, Runnels
and some other West Texas counties. (See
statistical tables.)
1M ANGANESE.-Manganese o r e s a r e
found in Terrell, Brewster, Val Verde,
Burnet and Mason Counties in Southwest
Texas, and at some points along the foot
of the high plains in Northwest Texas,
notably in Dickens County. During the
war w-hile there was a stiff demand for
this mineral, there were some shipments
from Langtry in Val Verde County and
possibly from other points along the
Southern Pacific west of the Pecos. Man-
ganese is used in the manufacture of
steel, glass, in the making of certain fer-
tilizers and in other industrial processes.
Due to the long distance of Texas' pro-
ducing areas from points of consumption
there has been no production recently. So
far. as reported by United States Govern-
ment bulletins shipments from Texas were
as follows: 1915, 80 tons; 1916, 800 tons;
1917, 25 tons; 1918, 350 tons.
MARBLE.-Marble of exceptional qual-
ity and great variety of color is found inTexas, principally in the two great min'-
eral belts, the Central Mineral Region
centering around Burnet and Llano Coun-
ties and in the mountains of Brewster and
Presidio Counties. During the last few
years there has been rapid development
of marble quarrying in the Burnet-Llano
area, and during 1926 a power transmis-
sion line was built into this territory
partly for the purpose of furnishing pow-
er to marble works. Quarries exist in
Burnet, Llano, Mason, San Saba, Huds-
peth and Brewster Counties. The quan-
tity and beauty of Texas marble has re-
cently attracted outside capital from
sources interested in the big marble in-
d~ustry of the New England States. Some
of the Texas marble is pronounced the
equal of the finest Italian product and it
is being employed extensively in statuary
aad art work.
fICA.-There has been some mica pro-
duction from the Van Horn Mountains of
Hudspeth County. The only year for
which report upon production and value is
found among the Government bulletins
was 1920, when 427 tons of scrap mica
were produced, valued at $8,995. There
was also a small production of sheet mica
that year, unreported. There has been
subsequent operation but no report, prob-
ably to avoid revealing individual opera-
tions. There have been some reports of
mica from Central and Southwest Texas,
but bulletins of the United States Govern-
ment or of the University of Texas do not
seem to record them. Gypsum in the form
of selenite, which occurs commonly in
many parts of Texas, is frequently mis-
taken for mica.
OCIIRE.-Ochre is formed by the im-
pregnation of certain kinds of clays with
iron oxides. Ochres occur in some parts
of East Texas where clays underlie great
iron deposits. Ochres are found in yel-
lows and reds, ferrous oxides giving the
yellows and ferric oxides the reds. Some
excellent red ochre is said to occur in
Cherokee County and there has been some
commercial production. This product is
used in the manufacture of paints, prin-
cipally paints used on iron work. Some
of the brilliant reds are used in the manu-
facture of cosmetics; and it is said that
some of the East Texas production went
to Parisian makers of rouge.
NOVACULITE.-This stone, which is
used in the manufacture of high-grade
hones, is found in Brewster and Presidio
Counties.
ONYX.-Some beautiful specimens of
onyx are found in Brewster County.
OPAL.-Opal is found in Brewster and
Presidio Counties. Some specimens have
been reported also from Gillespie County.
PEARLS.-Pearls, some of which have
been of fair size and good quality, have
been found in the bayous tributary to the
Caddo Lake in Northeast Texas, and in the
Colorado, Pedernales, San Saba and Llano
Rivers of Southwest Texas. The pearls
occur in mussel shells. A number have
been found along the Colorado River,
where it forms the boundaryline between
Burnet and Llano Counties.
PETROLEUM.-Aside from the abun-
dant fertile soils which are the basis of
the crop and live stock production of
Texas, petroleum is the State's greatest
natural resource. Possibly the great for-
ests of East Texas have, because of the
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1927 The Texas Almanac and State Industrial Guide, book, 1927~; Dallas, Texas. (https://texashistory.unt.edu/ark:/67531/metapth123785/m1/254/: accessed April 30, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting Texas State Historical Association.