LIMESTONE.
Limestone is composed of carbonate minerals,
notably calcite,but also aragonite, siderite and other carbonates
species, such as ankerite. It may containe inorganic carbonate that
precipitates directly from saline water or organic carbonate from
fragments of the shells of marine organisms or coral. Chalk is a type of
limestone that contains the remains of carbonate micro – organisms.
Caves
form naturally in dolomite or limestone because carbonate minerals
dissolve easily in slightly acidic groreaundwater leaving vast
underground chambers lined with stalactites, stalagmites and other cave
deposits.
When such
underground caves manifest themselves on the surface, they can form
sinkholes with disastrous consequences, as in the 1960s in
Carletonville in Gauteng, South Africa.
May
stalactites and stalagmites are composed of travertine, a finest
crystalline limestone that has concentric rings or radiating growth
patterns. Another chemical sedimentary rock, tufa, is composed of
calcium carbonate. It originates around groundwater or springs where
calcium – rich water is present , and forms characteristic concretionary
or bulbous s deposits. Calcrete is a rock composed or calcium carbonate
and usually forms from precipitation of calcium carbonate in upper soil
layers as a result of evaporation.
Dolomite
is a calcium – magnesium carbonate mineral species, but the term
also refers to a rock composed of dolomite – crystals.
Although
dolomite can be formed by evaporation of saline water, many limestones
become dolomitized by magnesium – rich saline solutions that percolate
through the limestone and chemically replace the limestone with
secondary dolomite.
The main
commercial use of limestone is in the cause manufacture of cement, made
by burning (sintering) limestone with silica, aluminium and iron oxides.
Limestone used as flux in the production of non – ferrous metals. It
has several other uses, notably water and sewerage purification, stone
dusting in coal mines and as a filler in paint, rubber, wood, putty,
vinyl tiles and asphalt. Dolomite is used for refractory bricks and
limestone. Both dolomite and limestone are used as fertilizers to
neutralize acidic soils and are important aquifers that store vast
amounts of underground water.
Limestone
stocks
Limestone
Limestone Chemical Data Sheet
Analysis
Smaller Pieces - 500 grams To 10
Kilograms
Larger Pieces - 10 kilograms TO
1 TON Single Pieces.
Minimum Order Supply - 100
kilograms
Maximum Supply Per Order -
100 TONS.
PRICE & SHIPPING COSTS
(FOB/CIF), SEND US AN EMAIL FOR THE QUOTATION.
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