1. PRECIOUS METAL
A Precious metal is a
rare, naturally occurring metallic
chemical element of high
economic value.
GOLD and SILVER are the two
precious metals which are both
found in the Philippines.
2. Gold
• Gold is usually in the free
state and at times in mixture
with other minerals. Gold
may be in the form of flakes
or nuggets and when found
in loose materials.
• The principal producers of
gold are South Africa,
UNITED States, Russia, and
Canada.
3. Silver
• Silver was one of the earliest
metals known to humans,
and it has been considered a
precious metal.
4. Non-Metalic minerals
• The non-metallic minerals
are given secondary
importance when compared
with those of the metallic
mineral. Diamonds and
other precious stones such
as emeralds, rubies and
sapphires are also classified
as non-metallic minerals.
5. CLAY
• Clay is a general term
including many
combinations of one or
more clay minerals with
traces of metal oxides and
organic matter.
• Clay is used in the
manufacture of roofing
tiles, refractory bricks, and
other ceramic projects.
6. Construction materials
• Construction material
such as
gravel, sand, earth, and
sandstones are found in
abundant quantities
sand
throughout the country.
sandstones
gravel
7. Guano and phosphate
• Guano consists of ammonium oxalate and
urate, phosphates, as well as some earth
salts and impurities.
• Rock phosphate a rock that consists
largely of calcium phosphate usually
together with other minerals (as calcium
carbonate), is used in making fertilizers,
and is a source of phosphorus compounds
• Guano and Rock phosphate occur in
limestone caves in nearly every province
bordering the sea, but the chief deposits
are found in Zambales, Negros
Occidental, Bohol, Cebu and Pangasinan.
8. LIMESTONE
• Limestone deposits
are found
extensively in many
parts of the country.
It is the principal
raw material in the
manufacture of
cement.
9. MARBLE
Marble a metamorphic
rock consisting primarily
of calcite and dolomite.
Calcite is a carbonate
mineral and the most stable
polymorph of calcium
carbonate .
Dolomite is a carbonate mineral
composed of calcium
magnesium carbonate.
10. SILICA
• The chemical compound
silicon dioxide, also
known as silica or silox
(from the Latin "silex").
• Silica is most commonly
found in nature as sand
or quartz. It is a
principal component of
most types of glass and
substances such as
concrete.
11. SULPHUR
• Sulphur occurs in three
forms, (a) from iron
pyrites which is the
biggest source of our
sulphur. (b) as elemental
sulphur which occurs in
the vicinity of sulfatoras
and fumarolic volcanoes.
(c) as sulphates of other
metals as sulphates of
copper and other
sulphides.
