HISTORY OF TEXAS.
"Crystal" Quartz.-The clear white vari%ety,
which is known as crystal, is sparingly
found in masses of a size suitable for use.
Clusters of crystals are found which form
handsome ornaments, but the greater part
are stained or milky.
Smoky Quartz.-The central mineral region
produces fine crystals of smoky quartz
of deep color. Barringer Hill, Llano county,
is one of the best localities.
Rose Qua rtz.-Beautiful shades of rose
quartz are found in Llano and Gillespie
Amethyst.-Gillespie county furnishes some
amethysts of fair color, but the deepercolored
ones have so far been found only in
the Sierra Blanca or Quitman region.
Thetis Hair Stone.--This variety of limpid
quartz, with fine needles of actinolite
scattered through it, is found in the northern
part of Gillespie county, near Enchanted
Beryl.--Some very large, fine crystals of
beryl have been found in Gillespie county,
and occasionally in Llano county.
Garnets are abundant both in the central
mineral district and in trans-Petos Texas.
Fine cabinet specimens showing both large
and attractive crystals are in the museum,
but no systematic work has been done in
working the deposits. There are several
colors-brown, black, and green-and they
occur in abundance. Among the localities
may be mentioned Clear Creek valley on the
Burnet and Bluffton road, Babyhead, King
mountains, and similar areas in Llano and
Gillespie counties, in the Quitman mountains
and other localities in trans-Pecos Texas. In
Llano county fine crystals are also found of
idocrase, or Vesuvianite, which isiear the
garnet in character.
Black tourmaline is abundant in certain
granites of Llano county, and will be useful
for all purposes for which it can be employed,
although there is no prospect of
specimens of value for cabinet purposes
Chalcedony.-Some fine specimens of chalcedony
have been found in Travis county in
the neighborhood of the disturbances caused
by the Pilot Knob eruption. They alto
occur in Presidio county and other portions
of west Texas.
Carnelians have been fund in the vicinity
of Van Horn, El Paso county.
Sardonyx.-Beautiful specimens of sardonyx
are found in the trans-Pecos region in
El Paso or Jeff Davis counties. A number
of specimens are now in the State museum.
Jasper.--In this same region are found
handsome varieties of plain and banded jasper,
but, like the other deposits, there has
been no attempt at development, and onlywa
few specimens have been collected by persons
happening on them. Pebbles of jasper
are also abundant in the drift as far north as
the Staked Plains.
Agate.-The occurrence of this beautiful
stone has been mentioned in the former reports
of this survey. It is found abundantly
in several parts of west Texas and occasionally
in the river drift of the Colorado. In
west Texas they are found in a schistose material
and scattered over the surface in large
quantities, from fragments to boulders of
considerable size. The colors are rich, and
the banded and fortification agates show
beautiful bandings and stripes. Moss agates
are also plentiful, and there is ample'room
for the establishment of an industry in this
material, even if they are only collected for
shipment abroad. The average price paid
for rough agate for manufacturing purposes
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Lewis Publishing Company, publisher. History of Texas, together with a biographical history of Milam, Williamson, Bastrop, Travis, Lee and Burleson counties : containing a concise history of the state, with portraits and biographies of prominent citizens of the above named counties, and personal histories of many of the early settlers and leading families. Chicago. The Portal to Texas History. http://texashistory.unt.edu/ark:/67531/metapth29785/. Accessed October 6, 2015.