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Mineral water
Quicksilver

Total

In forty-fourth place, commercial production for 1914 was as follows:

Lassen.

Copper Gold

Silver

Substance

Total

Area: 4,531 square miles.

Population: 7,000 (estimated by board of supervisors, 1913).

Location: Northeast portion of State.

Los Angeles.

Miscellaneous stone

Amount

Substance

254,150 gals.
331 flasks

Lassen County is one of the least explored sections of California. Within the past couple of years a railroad traversing the county north. and south has been put in operation, thus affording opportunity for development along mineral and other lines.

Among the mineral resources of this county are copper, gems, gypsum, gold, silver, and sulphur.

In fifty-first place, commercial production for 1914 was as follows:

Value

Amount

19,089 lbs.

$47,267 16,236

$63,503

Value

$2,539 1,000

775

10

$4,324

Area: 4,067 square miles.

Population: 800,000 (estimated by Chamber of Commerce, 1913). Mineral production in Los Angeles County for the year 1914 amounted in value to $4,665,504, as compared with the 1913 output, worth $5,833,298. This county ranks fifth in the State as a mineral producer.

Its output of brick was over a million dollars, and that of petroleum amounted nearly to two million dollars. Among its leading mineral resources may be noted asphalt, barytes, borax, brick, chromite, clay, copper, fuller's earth, gems, gold, gypsum, infusorial earth, iron, limestone, marble, mineral paint, mineral water, natural gas, petroleum, salt, glass-sand, sandstone, serpentine, silver, soapstone, and stone in-. dustry. Some potash is also found in this county.

Commercial production for 1914 was as follows:

Borax
Brick

Clay

Gems

Mineral water

Miscellaneous stone

Natural gas

Petroleum

Potash

Salt

Total

Madera.

Copper

Gold

Miscellaneous stone

Pumice

Silver

Total

Substance

Marin.

Amount

13,203 tons

133,557 M

Area: 2,112 square miles.

Population: 15,000 (estimated by Chamber of Commerce, 1913).

Substance

8,263 tons

331,151 gals.

1,250,000 M cu. ft.
3,558,690 bbls.

10 tons
20,000 tons

Location: East central portion of State.

Madera County produced five mineral substances during the year 1914, having a total value of $203,517, as compared with the 1913 output worth $371,867. This county contains deposits of copper, gold, iron, lead, molybdenum, pumice, silver, and building stone.

In thirty-fifth place, commercial production for 1914 was as follows:

Amount

Value

35,359 lbs.

$349,669

1,244,971

50 tons

14,566

2,100

8,025

953,434 75,000 1,957,279 460 60,000

$4,665,504

Value

$4,703 5,000

192,764 1,000

50

$203,517

Area: 529 square miles.

Population: 25,114 (1910 census).

Mineral production in Marin County during the year 1914 reached a value of $554,137, as compared to the 1913 output, worth $278,453. The considerable increase was due to three large contracts for rubble and macadam-the Key Route mole, San Francisco waterfront bulkhead and the Exposition roadways-rock for all of which came from Marin County. This county is not especially prolific in minerals, although among its resources along these lines are asbestos, brick, gems, mineral water, soapstone, and stone industry.

In twenty-sixth place, commercial production for 1914 was as follows:

Brick

Mineral water
Miscellaneous stone

Total

Mariposa.

Area: 1,463 square miles.

Population: 3,956 (1910 census).

Substance

Barytes
Copper

Gold

Marble

Miscellaneous stone.

Silver

Total

Mendocino.

Amount

Location: Most southerly of the Mother Lode counties. East central portion of State.

15,000 M
60,000 gals.

Mariposa County is one of the distinctly "mining" counties of the State, although it stands thirty-sixth on the list of counties in regard to the value of its mineral output for 1914, with a total of $187,870, as compared with the 1913 figures of $246,079.

Its mineral resources are varied, among the more important items being asbestos, barytes, copper, gems, gold, lead, marble, silver, slate, soapstone, and the stone industry.

Commercial production for 1914 was as follows:

Substance

Value

Amount

$55,000 9,000

490,137

$554,137

2,000 tons 277,472 lbs.

100 cu. ft.

Value

$3,000 36,904

132,000

100 15,366 500

$187,870

Area: 3,453 square miles.

Population: 23,929 (1910 census).

Location: Joins Humboldt County on the south and bounded by the Pacific Ocean on the west.

Mendocino's annual mineral production is small, the 1914 output. being valued at $560, ranking it fifty-fifth among the counties. That of 1913, however, was worth $9,450. In each case crushed rock was the material commercially produced.

Deposits of uncertain value, of asbestos, chromite, copper, graphite, magnesite, and mineral water have been found, as well as traces of

gold and silver. For the coming year there are good prospects for a commercial yield of manganese ore.

Commercial production for 1914 was as follows:

Miscellaneous stone

Merced.

Area: 1,995 square miles.

Population: 15,148 (1910 census).

Gold*
Silver*

Total

Location: About the geographical center of the State.

Merced County as a whole lies in the San Joaquin Valley, and it figures as one of the lesser mineral-producing counties of the State. The 1914 mineral output (in which is included the gold and silver yield of Stanislaus, there being but a single dredge in each), was valued at $112,500. Copper and crushed rock have also been commercially produced. Undeveloped deposits of antimony, quicksilver, and limestone have been noted in this county, in addition to the foregoing. Commercial production during 1914 was as follows:

Modoc.

Substance

*Including output of one dredge in Stanislaus County.

Gold
Salt
Silver

Total

Substance

Substance

Value

Area: 3,823 square miles.

Population: 6,191 (1910 census).

Location: The extreme northeast corner of the State.

Modoc County, like Lassen, has only recently had the benefit of communication with the outside world by rail. It is at the present time, generally speaking, an unexplored country. Among its known mineral resources are: Clay, coal, gold, iron, quicksilver, salt, and silver.

In fifty-second place, commercial production for 1914 was as follows:

Amount

$560

40 tons

Value

$112,000 500

$112,500

Value

$1,000

720

10

$1,730

Mono.

Area: 3,030 square miles.

Population: 2,843 (1910 census).

Location: Is bordered by the State of Nevada on the east and is about in the central portion of the State measured on a north and south line.

Gold
Salt

Silver

Gold mining has been carried on in portions of Mono County for many years, although taken as a whole it lies in a rather inaccessible country and has been but superficially explored. It is in the continuation of the highly mineralized belt which was noted in Inyo County and contains among other mineral resources barytes, bismuth, clay, copper, gold, gypsum, iron, lead, limestone, salt, silver and travertine. In forty-eighth place, commercial production for 1914 was as follows:

Total

*Medicinal.

Monterey.

Area: 3,330 square miles.

Population: 24,146 (1910 census).

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Substance

Miscellaneous stone

Sand, glass

Silver

Other minerals

Total

Amount

Location: West central portion of State, bordering on Pacific

Ocean.

ton*

Monterey County produced ten mineral substances during the year 1914, having a total value of $113,831, as compared with the 1913 output worth $178,679. Its mineral resources include brick, clay, copper, coal, feldspar, fuller's earth, gold, silver, gypsum, infusorial earth, limestone, mineral water, petroleum, quicksilver, glass-sand, sandstone, silver, and the stone industry.

In forty-second place, commercial production for 1914 was as follows:

[blocks in formation]

Value

5,992 tons
700 tons

450 tons

7,000 tons

26,000 gals.

9,210 tons

$7,000 150

10,000

$17,150

Value

$17,976 3,500

3,150

4,000

21,000

7,900

39.202

7,633 20

9,450

$113,831

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