GEM MARBLE QUARRIES.

Twelve miles northeast from Victor are the Gem quarries, that produce

variegated marbles of great beauty. Shades of yellow, chocolate, black,

pale blue, crimson and gray, cream-colored, rose, and white. The

markings are such as to produce beautiful effects. The croppings are

strong, and the surface material is apparently not at all injured by the

exposure of centuries to the elements in a region where nearly all rocks

decay and disintegrate rapidly. The outcrop stands boldly above the

adjacent country rock from 10 to 20 feet. The entire ledge or belt is

made up of bands or beds ranging from 3 to 6 feet in thickness. These

strata are separated by thin seams or fractures, but it is reasonable to

presume that this separating line or joint will disappear as depth is

attained. The rock is all susceptible of a high polish, and it

withstands a tremendous crushing force. It was said by the owners that

this had been determined at 28,000 pounds per square inch.

The quantity is large, the variety abundant, and the beauty approaches

that of rare onyx. With these unusual conditions surrounding the

deposit, its marketing should become an industry of no small importance.

The difficulties of transportation are not insurmountable.

Old Mines of Southern California Desert-Mountain-Coastal Areas Including the Calico-Salton Sea Colorado River Districts and Southern Counties · 第 40 / 78 题