|
674 MINERAL RESOURCES, 1913—PART II.
mens
these markings are in nearly pure chalcedony. There were a I few pieces
of greenish jasper, both with and without red markings. Some of the
bluish chalcedony with bright-red jasper inclusions was particularly
attractive. Of the several pounds of specimens re- | ceived, the colors
were bright enough for gem purposes in only a small part.
OREGON.
Mr.
Don Maguire, of Ogden, Utahy reports the occurrence of a deposit of
bloodstone discovered by him in Harvey County, Oreg., about 15 miles
east of the town of Burns. The bloodstone occurs in a ledge over 3 feet
thick cutting a trap dike. Some of the rough material was shipped for
cutting during 1913.
UTAH.
Richly
colored jasper, showing various shades of red in laminations or other
structures, is reported by Mr Don Maguire, of Ogden, Utah, from the
Wasatch Mountains in that State. Some of this jasper has been cut with
very pleasing results in Salt Lake City.
TEXAS.
Prof.
J. A. Udden, of Austin, Tex., reports the occurrence of jet in Presidio
County, Tex. The jet occurs as compressed and flattened trunks of trees
in a thin layer of coal from 100 to 200 feet below the San Carlos coal
bed.
LAPIS LAZULI.
CALIFORNIA.
An occurrence of lapis lazuli in California has been described by Gordon Surr,1
and the following notes are taken from his description. Mr. Surr also
kindly sent a specimen to the Survey for examination. The locality is
on the north slope of the south fork of Cascade Canyon, 1-1/2 miles
south of east of the "Hogback," a well-known landmark in San Antonio
Canyon, to which Cascade Canyon is tributary. The deposit is about 12
miles from Upland, a town on the Santa Fe Railway, about 20 miles west
of San Bernardino. The "blue rock" was long thought by prospectors to
carry silver, and the deposit was opened with this idea. Apit 15feet
deep apparently went through the " blue rock," and work was abandoned.
The
mineral was identified by John T. Reed, an assayer in San Bernardino,
whose son made an attempt to open the deposit further. The locality was
visited by several persons subsequently, and in 1913 by Mr. Surr and
his associates. No lapis lazuli was found in place, but probably 150
pounds of loose rock with some of the blue interÂmixed were found in
the talus on the slope.and in the drift in the stream bed.
The
country rock consists chiefly of quartzites and limestones, which
strike east with a high northerly dip near the old workings. At
i Lapis-lazuli in southern California: Min. and Eng. World, Dec. 27,1913.
|
||
|
|
||