Shree Ambey Shakti Trading Company Private Limited


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Kota Stones


Kota Stones

The state of the Rajasthan in India is the biggest producer of dimensional stone e.g. marble, granite, slates, sand stone and limestone widely known as Kota Stones. Kotah stone is being used extensively as excellent flooring stone being very tough, compact and can take mirror polish. Kota Limestones are naturally riven flooring stone. Mining for Kotah Stone has started some 70 years back with a production of few thousand square feet. It has multiplied many times over these years. Present level of production is 250 million Sq.ft. Mining of Kotah Stone over the years has been all manual except removal of over burden. The excavation of over burden 12-15mm thick had been mechanized since 1983 only. After removal of overburden, the layers yielding Kotah Stone have been separated by chiesel and crow-bar followed by sizing and splitting the layer along natural cleavage to give Kotah Stone Slab/Tile ready to use. The mining has been very selective. Only those layers which could be splitted upto a maximum of 3" thickness and could be cut to size manually by chiesel and hammer have been mined. The rest have been thrown as waste.

Kota Stone (Lime Stone) is known for its wide applications due to its durability and beautiful appearance. Kota stone’s unique properties make it an ideal stone for builders. It is essentially a dolomite stone. Upon wetting and drying there is no apparent delamination effect. We offer Kota stone slabs, blue (green) limestone, polished limestone and limestone tiles. Kota Blue (Green) & Brown, a popular limestone, that makes an excellent building stone because it can be carved easily. The specialty of this limestone is in its hardness and it can be used both for interiors as well as exteriors. The polished surface finish shines like a mirror. It has minor color variation but within tolerance limit. We have carved a niche as one of the preeminent Kota Brown Limestone manufacturers and suppliers in India.

Physical Properties of Kota Stone
Kotah Stone are Quite impervious, Hard, Compact, fine to very fine grained calcareous rocks of sedimentary nature.

Compressive Strength 21.75 kg/sq. mm 21.94 Kg/ sq. mm
Abrasion Resistance 18.12 (Abrasion value) 18.12 (Abrasion value)
Oil Absorption Nil Nil
Water Absorption 0.31 % 0.32 %
Moh Hardness No. will scratch -3
Calcite will not
Scratch- 2.1/2 Galena
will scratch -3
Calcite will not
Scratch- 2.1/2 Galena
Density: 2.5 to 2.65 Kg/m3
Porosity: Quite Low
Weather Impact: Resistant

Chemical Properties of Kota Stone
Chemically, both Kotah Stone are siliceous calcium carbonate rocks .
Lime (CAO) 38-42%
Cilica(SiO2) 20-25%
Alumina (Al2O3) 2-4%
Other Oxides like Na, Mg 1.5 to 2.5%
Loss On Ignition (LOI) 30-32%


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