COPPER

Question 1

A brownish-red metallic element, is one of the most widely used of metals. It is a ductile and malleable metal that is resistant to corrosion and possesses a very good conductivity to electricity and heat that makes it useful in a wide variety of applications.

Answer 1

Copper (Cu)

Question 2

____ and ____ are alloys of copper with tin and zinc, respectively

Answer 2

Bronze and brass

Question 3

The principal sources of copper are ______ and ______,
mixed sulfides of copper and iron.

Answer 3

chalcopyrite and bornite

Question 4

______, ______, and ______ are known for their large scale copper mining operation (construction, elec and manufacturing)

Answer 4

Chile, Peru, and China

Question 5

In the Philippines, the principal sources of copper are _________________ associated with dioritic to quartz dioritic and granodioritic stocks and batholiths
occurring in major arcs of the Philippines.

Answer 5

Porphyry copper deposits

Question 6

lesser significance copper deposits are copper associated in

Answer 6

Polymetallic skarn deposits

Question 7

Epithermal/mesothermal vein-type
deposits have a more limited age range, from _______ to _____

Answer 7

Late Miocene to Pliocene

Question 8

Cebu

Answer 8

Cretaceous

Question 9

Nueva Vizcaya and Southeastern Negros

Answer 9

Oligocene

Question 10

Luzon Central Cordillera

Answer 10

Late Miocene to Pliocene

Question 11

_____________ have higher copper grades than porphyry-type deposits but have a more limited distribution (in ophiolites and mature arcs).

Answer 11

VMS-type deposits

Question 12

Mining for copper in the Philippines dates back to the ________ when crudely smelted copper was traded with the Chinese.

Answer 12

14th century

Question 13

Significant production started in _________, when the ____________ opened the ___________ in Antique

Answer 13

1842; San Remigio Copper Mines, Inc.; Carawisan Mine

Question 14

The Americans took little interest in the metal until ___ when the _______ was reopened.

Answer 14

1936; Mankayan Mine

Question 15

In ____, the _________, Albay was put into production.

Answer 15

1939; Hixbar Mine in Rapu-rapu Island

Question 16

The three mines which were accounted for all the copper produced in the Philippines before World War II.

Answer 16

Carawisan mine, Mankayan mine, Hixbar mine

Question 17

This was followed by Mankayan Mine in Benguet which was operated by the __________ from _________

Answer 17

Contrabro-Filipino Co. from 1865 to 1875

Question 18

For its high-grade copper ore, Mankayan Mine was reopened in ____ by the __________.

Answer 18

1948 by the Lepanto Consolidated Mining Company

Question 19

Atlas Mine in Cebu production started in

Answer 19

1955

Question 20

Sipalay Mine in Negros

Answer 20

1957

Question 21

Sto. Thomas II Mine in Benguet

Answer 21

1958

Question 22

year when full-blown copper boom dominated the mining industry, triggering extensive exploration activities that led to the discovery and opening of new porphyry
copper mines

Answer 22

1960s

Question 23

Many of the new copper mines had to succumb to the crisis in the ____ due to declining copper prices, brought about by the worldwide slowdown of copper dependent
industries.

Answer 23

1980’s

Question 24

Only ____ copper producers were in operation in 1983

Answer 24

11

Question 25

By 1984, the number of copper producers was reduced to only ______.

Answer 25

5

Question 26

The optimism of the copper mining industry was short-lived, as it was doused by the terrible mine tailings spill of _________

Answer 26

Marcopper in Marinduque on March 24, 1996.

Question 27

_______ are hypogene sulfide deposits in which the ore minerals are disseminated in the form of grain impregnations and/or network of veinlets within acid to intermediate bodies and the rocks they intrude. In the Philippines, this type of deposit is of utmost importance.

Answer 27

Porphyry copper deposits

Question 28

These are strata-bound polymetallic mineral deposits genetically related to submarine acid volcanic activity. The orebodies occur mostly as lenses concordant to the general orientation of the host rocks

Answer 28

Kuroko-type VMS deposit

Question 29

Typical features of Kuroko-type VMS include:

Answer 29

(1) intimate association with submarine felsic volcanics; (2) economic or subeconomic grades of Cu, Pb, Ag, and Au, and abundant occurrences of Ba- Ca-sulfates; and (3) occurrence of stratiform lenticular orebodies that are concordant with surrounding sediments.

Question 30

The massive sulfide base metal sulfide ores are associated with rocks of mafic-ultramafic association of ophiolitic affinity. The orebodies are lens-shaped pyrite-chalcopyrite ores contained in spilitized basaltic pillow lavas which are the product of relatively deep water, quiescent, fissure eruptions in the sea floor

Answer 30

Cyprus-type

Question 31

Stratabound massive cupriferous iron sulfide deposits, bed-like or lenticular in form, that lie conformably in crystalline schists. that these types of deposits are simply metamorphosed VMS deposits, of either the Kuroko or Cyprus types.

Answer 31

Besshi-type or Kieslager-type

Question 32

Copper deposits of the vein-type in the Philippines may be classified into two types:

Answer 32

Volcanic-hosted Cu-As-Sb veins and Mafic/ultramafic-hosted chalcopyrite-pyrrhotite-pyrite-quartz veins.