Gemstone and Decorative Minerals

Question 1

True or False

The discovery of gemstone resources in the Philippines can be traced back to significant finds in Sibalom and Tibiao, Antique, and in San Joaquin, Iloilo in 1982.

Answer 1

False. Sibalom and San Remegio, Antique

Question 2

The gemstone discoveries in Antique and Iloilo set the stage for establishments of small-scale gemstone industries in

A. Talisay, Cebu
B. Dumaguete
C. Aklan
D. Tacloban

Answer 2

C. Aklan

Question 3

A noteworthy endeavor in the gemstone industry was a three-year special project on livelihood from ________- led by the Mines and Geosciences Bureau through its regional office in Iloilo City.

A. February 1992 to August 1995
B. January 1996 to December 1998
C. October 1999 to November 2002
D. March 1998 to December 2001

Answer 3

B. January 1996 to December 1998,

Question 3

True or False

Primary deposits can occur as disseminations, veins, dikes, lenses, or beds within various rock types.

Answer 3

True

Question 4

The examples below are considered as precious stones, except

(1) Diamond
(2) Ruby
(3) Sapphire
(4) Emerald

A. 2
B. 3
C. 4
D. None of the above

Answer 4

D. None of the above

Question 5

This gemstone deposit is located in Zambales, which features layered ultramafic rocks such as dunite, peridotite, and gabbro.

A. Zambales garnet
B. Zambales peridot
C. Zambales jade
D. Zambales alexandrite

Answer 5

C. Zambales jade

Question 6

This deposit is significant for its parallel quartz veins within limestone, carrying a distinct greenish-gray hue, indicative of its rich mica content.

A. Mindoro chrome diopside
B. Mindoro jade
C. Mindoro tourmaline
D. Mindoro apatite

Answer 6

B. Mindoro Jade

Question 7

This place hosts a notable jasper deposit utilized both as a gemstone and an industrial material.

A. Neuva Vizcaya
B. Caramoran, Catanduanes
C. Santa Cruz, Laguna
D. Dasol, Pangasinan

Answer 7

Dasol, Pangasinan,

Question 8

True or False

Jasper deposits are distributed across various provinces, including Ilocos Norte and Masbate, often in volcanic and pyroclastic settings.

Answer 8

True

Question 9

Is found within the Bojeador Formation, composed of andesite and tuffs.

A. Black Opal
B. Boulder Opal
C. Moss Opal
D. Matrix Opal

Answer 9

C. Moss Opal

Question 10

The tektite deposits in Camarines Norte are known locally as?

A. Sunib
B. Bisnu
C. Lisun
D. Bus-li

Answer 10

B. Bisnu

Question 11

In __________obsidian deposits are located at the lower ridges of Mount ______.

A. Davao Oriental, Agtuuganon
B. Nueva Ecija, Aja
C. Aurora, Anacuao
D. Nagcarlan, Tangob

Answer 11

D. Nagcarlan, Tangob