Fertilizer Minerals

Metasomatic phosphatization.

The highly workable open-cut deposit as exemplified by the phosphate deposits of Isabel in Leyte, Guihulngan in Negros Oriental, Pinamungahan, Balamban, Ronda, Barili and Tuburan in Cebu are produced by a process of _______

Aragonite

is the dominant component of coralline limestone

Massive deposit

occupying the full width of the fracture belongs to the second type

Kang-abohon Cave

A typical sequence of either guano or phosphatized guano is resting on the surface of phosphate rock as preserved in _______

Seawater

Another potential source of MgO and CO2 is _____

Phosphorous and Nitrogen

Guano provide the most important organic source of ___ and ____

soil conditioner

In US, peat is extensively used as _________

Fibrous

In industries, _______ peat on account of its moisture-absorbing quality is widely used as litter material for breeding livestock.

fuel

In some European countries, peat is used as ____

Fresh guano

It contains nitrogen, ranging from less than 1 to 6 percent; phosphorous pentoxide from 0.25 to 10 percent, and occasionally with potash.

Barangay Kang-abohon Munipality of Ronda, Cebu

Kang-abohon Cave is found in _____

Dolomitic Limestone

Limestone rich in magnesia is called _______________

Calcination

Magnesium is produceed by ____ of magnesium carbonate

Dolomitic limestone

The coastal or near-coastal distribution and occurrence of __________________ in Cebu suggest that sea water may have contributed to dolomitization

Lupon

The largest magnesite is found in ________ where they occur as veins in thin shells of highly fractured weathered peridotite.

Sitio Puntalinao, Barangay Dinagsa-an, Municipality of Banay-Banay, Province of Davao Oriental.

The ma'jor company processing magnesite is found in _____________

Hubay Formation

The phosphate deposit in Isabela is hosed by what formation

Dolomitization

The transformation of normal limestone to dolomitic limestone or dolomite is known as __________

1952

The year ____ marks the earliest recorded commercial

Barangay Liberty, Ormoc City, Leyte

This 103 hectare singly explored peat deposit is found in _______________

Dumarao, Capiz

V.E. Elicaño of the then Division of Mines, Bureau of Science assessed guanobearing caves in ______

Brain-like

_____________type constituting the bulk of the deposit may have originated as normal products of weathering.

Dolomite

a carbonate of calcium and magnesium, is ideally composed of 21.70 percent magnesia, 30.40 percent lime and 47.90 percent carbon dioxide.

Limestone

a carbonate rock consisting mainly of calcite or aragonite is the most thoroughly exploited of all the sedimentary rocks.

Magnesite

a natural form of magnesium carbonate with ideal magnesia content of 47.60 percent, is an important source of magnesium for fertilizer

Guano

accumulated excrement and remains of birds and bats

Magnesium

an essential element in plant and animal metabolism, and is added to fertilizers in the form of caustic-calcined magnesia.

April 1979

domestic magnesite production commenced only in _______

Folded Sheets

filling the fractures constitute the third type.

Clustered nodules or concretions

found on both walls of the fracture constitute the first type.

1922

initial search for and investigation of guano deposits dated back in _____

Oyster-shell Lime

is crushed oyster shell that has been calcined and used as agricultural lime or simply aglime.

Peat

is dark brown to black carbonaceous residuum produced by the partial decomposition and disintegration of mosses, sedges, trees, and other plants that have grown or accumulated in shallow lakes, marshes, and tidal flats.

Open-cut deposits

is exemplified by phosphorite associated with massive to poorly bedded, porous, coralline, and frequently fractured limestone formations of Pliocene to Pleistocene age.

Guano-derived phosphate rock

is found singly or in combination with guano

Phosphatized limestone

is generally porous, vuggy, friable, hard and occasionally compact.

Hydrated Lime

is hydrated calcium oxide, Ca(OH)2, with 24 percent water.

High-calcium lime

is made from burning limestone with 50 to 55 percent calcium oxide and 40 to 55 percent carbonic acid, containing small percentages of magnesia,silica, iron, and alumina. A lime derived from these raw materials yields 90 to 98 percent calcium oxide.

Fresh guano

is usually dark chocolate brown, soft, oblong, and about the size of a grain of palay which eventually disintegrates into pulverulent masses

Phosphate Rock

made up primarily of chloride, fluoride, carbonate, or hydroxyl forms of apatite, is the main source of phosphate in chemical fertilizers.

Humus

peat contains a large fraction of fibrous and porous organic matter or __________

Phosphatic soil

produced by the mixing of transported soil material with droppings and remains of bats and birds deposited inside the cave, is relatively loose and much lighter in color than fresh guano.

Metasomatism

resulted from solutions leached out from phosphatic guano.

A.R. Chemical Traders

the major company processing magnesite

Phosphatized guano

underlies the phosphatic soil in a normal sequence of guano deposition, relates to the comparatively purer and older deposits of guano

Magnesian Lime

used in agriculture contains 5 to 20 percent magnesia and 70 to 85 percent calcium oxide. A bushel of magnesian lime weighs about 70 pounds; a highcalcium lime, 90 to 95 pounds