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UNITED STATES Mineral Resources
From various technical publications, such as those of Semper, Santos, and others, and from data recorded in the Spanish Mining Bureau, it is learned that only about a score of the islands are known to contain de- posits of valuable minerals. These are arranged below in the order of their latitude, to give an idea of their geographical distribution and to facilitate finding the islands on the map. The latitude of the northern end of each is taken as that of the island. The character of the valuable minerals stated in the table will afford a general notion of the resources of the islands.
MINEKAL-BEARING ISLANDS AND THEIR RESOURCES
Island
Latitude (North End)
Character of Mineral Resources
Luzon .
18° 40'
Coal, gold, copper, lead, iron, sul- phur, marble, kaolin
Catanduanes
14 8
Gold
Marinduque .
13 34
Lead, silver
Mindoro
13 32
Coal, gold, copper
Carraray
13 21
Coal
Batan .
13 19
Coal
Rapu-Rapu
13 15
Coal
Masbate
12 37
Coal, copper
Romblon
12 37
Marble
Samar .
12 36
Coal, gold
Sibuyan
12 30
Gold
Semirara
12 7
Coal
Panay .
11 56
Coal, oil, gas, gold, copper, iron, mercury (?)
Biliran .
11 43
Sulphur
Leyte .
11 35
Coal, oil, mercury (?)
Cebii .
11 17
Coal, oil, gas, gold, lead, silver, iron
Negros .
11
Coal
Bohol .
10 10
Gold
Panaon
10 10
Gold
Mindanao
9 50
Coal, gold, copper, platinum
Sulu Archipelago .
6 30
Pearls
So far as is definitely known, the coal of the Philippine Islands is all of Tertiary age, and might better be characterized as a highly carbonized lignite.
Coal exists in various provinces of the island of Luzon (Abra, Cama- rines, Bataan, Sorsogon). The finest beds thus far discovered appear to be those in the small island of Batan, lying to the east of the southern portion of Luzon, in latitude 13°]'.)'.
The coal field of southern Luzon is said to extend across the Strait of San Bernardino into the northern portion of Samar.
In Mindoro there are large deposits of coal in the extreme southern
