21

ASBESTOS.

Near the Sandys, in the neighbornood of Enchanted rock, not seen in sufficient abundance to be of commercial value.

STEATITE OR SOAP STONE,

In large veins of massive form and light gray color, is on the Hondo, a branch of the Sandy and also on the Sandys, in the mountains about midway of its course through Llano county. The various uses of this mineral are well known. Inexhaustible quantities of it are in Llano county.

OBSIDIAN.

About six miles distant westward from Muerto springs in Presidio county, along the valley range of mountains, not from the El Paso road, are large massive veins of obsidian.

JASPER.

Large masses of green and red jasper are near the Barilla spring. They are probably altered sandstones of cretaceous age, being near the base of mountains of igneous origin ; I also saw red jaspers among the mountains near Fort Davis.

OPALS.

Common opals of good quality are quite abundant near Van Horn's well, also sparingly scattered among the igneous rocks of the west.

PHRENITES

Are quite abundant associated with opals.

AGATES,

Of both the moss and common kinds, are in the same region; also carnelian and chalcydony, which, when united, form agates.

We collected good specimens of all these and others for the State collection.