Purth Grey Marble Slab

Purth Grey Marble Slab

It is a kind of grey marble quarried in China .This stone is especially good for Building stone, sinks, monuments, pool coping, sills, ornamental stone, interior, exterior, wall, floor , paving and other design projects. It also called Cloud grey, it can be processed into Polished, Sawn Cut, Sanded, Rockfaced, Sandblasted, Tumbled and so on.  Marble is a metamorphic rock formed when limestone is exposed to high temperatures and pressures. Marble forms under such conditions because the calcite forming the limestone recrystallises forming a denser rock consisting of roughly equigranular calcite crystals.

How Does Marble Form?

Most marble forms at convergent plate boundaries where large areas of Earth's crust are exposed to regional metamorphism. Some marble also forms by contact metamorphism when a hot magma body heats adjacent limestone or dolostone.

Before metamorphism, the calcite in the limestone is often in the form of lithified fossil material and biological debris. During metamorphism, this calcite recrystallizes and the texture of the rock changes. In the early stages of the limestone-to-marble transformation, the calcite crystals in the rock are very small. In a freshly-broken hand specimen, they might only be recognized as a sugary sparkle of light reflecting from their tiny cleavage faces when the rock is played in the light.

As metamorphism progresses, the crystals grow larger and become easily recognizable as interlocking crystals of calcite. Recrystallization obscures the original fossils and sedimentary structures of the limestone. It also occurs without forming foliation, which normally is found in rocks that are altered by the directed pressure of a convergent plate boundary.

Recrystallization is what marks the separation between limestone and marble. Marble that has been exposed to low levels of metamorphism will have very small calcite crystals. The crystals become larger as the level of metamorphism progresses. Clay minerals within the marble will alter to micas and more complex silicate structures as the level of metamorphism increases.

 

Material:	Purth Grey Marble Slab	Brand:	HZX STONE
Color:	Grey	Origin:	China
Finishing:	Polished,Honed,Sandblasted,Brushed and so on.	Usage:	Commercial and Residential building projects
Product:	Slab,Tile, Vanity top,Stair and Risers etc.	Q.C.:	100% inspection before shipping
Available Size:	All sizes, Customized Sizes are welcome	Thickness:	10/20/30mm or customized.
Payment terms:	T/T, L/C and others by negotiation.	Sample:	FREE 10*10/15*15cm
Packing :	Wooden Bundles for slabs	MOQ.:	1x20'FCL (Negotiable)

1) Q: Where is your company?
A: Our headquarters is located in Xiamen, Fujian Province, factory in Shuitou, also with many cooperated factories around the domestic.

2) Q: What's the port of loading?
A: Normally Xiamen Port, Tianjin Port, Wuzhou Port, Mawei Port.

3) Q: How is your packing?
A: Normally we pack our stone with fumigated wooden boxes (foam and plastic film inside) with plastic tapes in 6 sides, further strengthened with iron sheet in the corner. Individual carton packing or customized packing is available.

4) Q: What about shipping mark?
A: We can provide neutral shipping mark, or customer trade mark / OEM trade mark are available.

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