Dolomite
less than 50%; over 90%; 19.5 to 21.6%
Dolomite contains ______ Calcite, _______ Dolomite, _______ MgO
contact
Dolomite is a major component of some ________ metamorphic rocks and marbles
hypersaline
Dolomite is a primary phase in ____________ sedimentary environments
calcite; magnesium
Dolomite is formed by the replacement of the _______ ions by the _______ ions
325-1250
Dolomite is ground/milled into _________ mesh to produce dolomite powder. The powder will be classified
dolostone
Dolomite is the primary component of the sedimentary rock ___________
gangue
Dolomite occurs as a __________ in hydrothermal veins
ultramafic
Dolomites also occur in carbonatites and ________ rocks.
Primary Dolomites
Dolomites and dolostones that originate via replacement of CaCO3
diagenesis or hydrothermal metasomatism of limestone
Dolomites are formed by:
Replacement dolomites or Secondary dolomites
Direct precipitation from aqueous solution to form sedimentary deposits
Dolomite Cementation
The precipitation of dolomite from aqueous solution as a cement in primary or secondary pore spaces
dolomitic marble
The primary component of the metamorphic rock (Dolomite)
1. time 2. composition 3. derivation of the solutions involved 4. fluxing mechanisms
four major variables needed, to complete the dolomitization process:
Dolomitic Limestone
10%-59% Calcite; 50% to 90% Dolomite
Magnesian Limestone
50%-90% Calcite; 10% to 50% Dolomite
Calcitic Limestone
90%-95% Calcite; 5%-10% Dolomite
marine
In Visayas Region, especially in parts of Cebu, Bohol, and Western Leyte, are considered to be ________ sedimentary basins
MEXICO
In what country is that the Ordovician Upham dolomite and the Silurian Fusselman dolomite are high-purity beds in most of the area
Alcoy & Dalaguete Areas
Main deposits of Dolomite in Cebu Province
Cebu
One of the few provinces in the country where economically mineable deposits of dolomite can be found
Limestone
Over 95% Calcite; Less than 5% Dolomite
35,700,000 MT
Philippine Mining Services Corporation (Pungalo, Alcoy) estimated reserve
1. Crushing and Screening Dolomite Rock 2. Grinding and Classifying Dolomite Rock 3. Calcinating Dolomite Rock
Steps in Processing Dolomite
1. Preheating 2. Calcinating 3. Cooling 4. Mixing and Grinding 5. Briquetting 6. Refining Magnesium 7. Production of Magnesium Alloy
Steps in Processing Magnesium Alloys
rotary kiln
The crushed dolomite is calcined in a ________, which is used for producing refractory materials, magnesium alloys, cement, etc
1. auxiliary material for iron and steel. 2. Sintering agent and flux in metal processing 3. Ingredient in the production of glass, bricks and ceramics 4. Utilized as fertilizer and soil conditioner, and feed additives for livestock, among others
USES of dolomite
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.
dolomitic limestone
a limestone that contains dolomite
CaMg(CO3)2
chemical composition of dolomite
Canada
country where the deposits of dolomite were also found in precambrian marbles, calcite veins and carbonatite
