Natural Stone Archives - LSP Tech

Soapstones & Phyllite

John — Thu, 03 Dec 2020 12:13:03 +0000

Soapstones & Phyllite

Finishes – Honed & Leather

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Soft Quartzites

John — Thu, 03 Dec 2020 12:07:40 +0000

Soft Quartzites

FINISHES – Polished and Leather

Like marble, quartzite comes in many colors, but when pure it is light-colored. Quartzite tends to have a sugary appearance, and when broken the fractures cut through the sand grains, not around them as with a sandstone. They are having the lowest maintenance material, natural anti-skid, and low water absorbance features.

Roofing: Slate rock is used in the construction industry to make roofing shingles and coverings. Slate is preferred over artificial covering materials for its unique physical and chemical properties, moisture resistance, wind resistance, good insulating capability and cold/chill resistance.
Landscaping: Slate rock is used in various residential and commercial landscaping projects for its weather-resistant and pollution-resistant properties. It is used to pave paths, surround swimming pools, cover outer walls, make risers and treads on stairs, and even for patios.
Garden: Crushed slate provides gardeners with an aesthetically pleasing and inexpensive material for landscape design.
Crushed or ground marble is also used in paving roads and in manufacturing roofing materials and soil treatment products. The color of crushed slate also varies from black to hues of red, blue, purple and gray. No matter the size of your lawn, crushed slate can add an elegant touch to your garden design projects.
Flooring: Slate is used for external flooring, internal flooring and cladding. Slate floors are durable, nonporous, and require little maintenance.

Physical Properties of Quartzites:

Hardness	6.5 to 7 on Moh’s Scale
Density	2.3 to 2.4 Kg/cm³
Compressive Strength	90 to 140 N/mm²
Modulus of Rupture	16 to 40 N/mm²
Water Absorption	1.0 – 1.2 %
Porosity	Low to very low
Weather Impact	Resistant

Chemical Properties:

Lime (CaO)	95-97%
Iron (Fe₂O₃)	0.5%-1.5%
Alumina (Al₂O₃)	1 to 1.5%
Soda (Na₂O) & Potash (K₂O)	Less then 1%
Lime (CaO)	Less then 0.5%
Magnesia (MgO)	Less then 0.5%
TiO₂	–Not Applicable–
Loss On Ignition (LOI)	Less then 0.5%

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Marbles

John — Thu, 03 Dec 2020 11:04:20 +0000

Marbles

Finishes – Polished and Leather

Marble is primarily composed of the mineral calcite (CaCO3) and contains other minerals, such as clay minerals, micas, quartz, pyrite, iron oxides, and graphite. Under the conditions of metamorphism, the calcite in the limestone recrystallizes to form a rock that is a mass of interlocking calcite crystals. Marble is often the host rock for corundum, spinel, and other gem minerals. This is why marble is often used as decorative stone in designing plush and rich interiors.

Marble sculpture. Very pure calcite marble is used for most statues.
As a construction material in construction of columns, beams, lintels and cantilevers. Large blocks of coloured marble are used for columns, floors, and other parts of building.
Flooring in form of tiles. Marble sliced in various sized tiles is widely used in bathroom, kitchen and flooring of homes.
Marble Furniture in form of table tops, benches, etc.
Exterior and Interior cladding.
Landscaping with marble PEBBLES. Rounded or tumbled marble is also used in paving roads and in decorating luxurious garden spaces.

Physical Properties of Marble:

Hardness	3 to 4 on Moh’s Scale
Density	2.55 to 2.7 Kg/cm³
Compressive Strength	70 to 140 N/mm²
Modulus of Rupture	12 to 18 N/mm²
Water Absorption	Less than 0.5%(except Rainforest Green/Brown with 2-3%)
Porosity	Quite low
Weather Impact	Resistant

Chemical Properties of Marble:

Lime (CaO)	28-32%
Silica (SiO₂)	3-30% (varies with variety)
MgO	20 to 25%
FeO + Fe₂O₃	1-3%
Loss On Ignition (LOI)	20-45%

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Granites

John — Wed, 02 Dec 2020 11:08:11 +0000

Granites

Finishes – Polished, Leather, Flamed, Honed, Antique, Sandblasted

The principal characteristics of granite also include high load bearing capacity, crushing strength, abrasive strength, amenability to cutting and shaping without secondary flaws, ability to yield thin and large slabs and – above all – durability.

Due to highly dense grain, it is impervious to stain. Polished granite slabs and granite tiles have achieved a special status as building stones globally. Granite is also used for wall cladding, roofing, flooring, and a variety of other interior and exterior applications. India is one of the largest producers of granites blocks and processed granite slabs and granite tiles.

Used in Roadstone, building blocks, but has poor resistance to fire as it crumbles when exposed to intense heat.
Traditionally the main use of black granite is in tombstones and other monumental items.
Granite is widely used for various types of kitchen counters.
It is always in demand because of it’s decorative applications, elegant trimmings and luxury finish.
You can also find granite used in bolo cord slides, pendants, paperweights, bookends, lazy susan turntables, etc.

Physical Properties of Granite :

Physically, commercial granites are Hard, Compact rocks with fine to coarse grains of metamorphic or igneous origin.

Hardness	6 to 7 on Moh’s Scale
Density	2.6 to 2.8 Kg/cm³
Compressive Strength	140 to 210 N/mm²
Modulus of Rupture	15 to 25 N/mm²
Water Absorption	0.1-0.6%
Porosity	Quite low
Weather Impact	Resistant

Chemical Properties of Granite :

Chemically, they are igneous/metamorphic rocks composed of quartz, feldspar & ferromagnesian minerals like kriolite, chlorite, garnet, etc. A typical granite will have following chemical composition:

Silica (SiO₂)	70-75%
Al₂O₃	10-15%
CaO+MgO	Less then 0.5%
FeO + Fe₂O₃	2-4%
Alkalies	4-6%
TiO₂	Less then 0.5%
Loss On Ignition (LOI)	Less then 0.5%

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