Stone timber group puts in a such problems normally: Occasionally a kind of specific stone material looks however " name nots agree with solid " . The distinction between marble, limestone and dolomite and difference perhaps have professional personage ability to distinguish only greatly, to the owner of most building, they just pay attention to the exterior of stone material, it is material of which kinds of stone to what use perhaps not very care about.
But, below a lot of circumstances, distinguishing material of these a few kinds of natural stone is very important however, be opposite at least for final user, understood these a few kinds of office that visit the difference that seems same stone capable person, conduce to them can making comprehensive comparison when the choose and buy.
We understand He Baiyun of marble, limestone in detail below the character of stone.
1, marble
Marble also calls metamorphism or the limestone that crystallize afresh. True marble is the degenerative rock with a kind of qualitative calcite, and have crystal structure. The degenerative action that marble is material of stone of sex of base area area is derived by limestone and come, contain chunk commonly, the crystallization body with rough texture, among them the composition of calcite occupies 99% above. Crystallization body is used macroscopical, go up in its section especially.
The limestone hole density of most model is less than 1% , marble is compared to it, density wants many big. Because its have crystal structure, a lot of marble are translucent, can inspect ply to exceed 30 centimeters commonly, limestone of crystalloid of and rather than is opaque. Because marble producing area reachs internal composition to differ, the color of natural stone material each different.
And in bldg. , the marble of people refer is to point to normally include limestone, dolomite and serpentine inside a variety of stone material. American marble association sets: Those who be used at commerce is all have natural limy and can the rock that polishing gives brightness calls marble, include dolomite and serpentine.
2, limestone
Limestone also calls calcite, calcium carbonate, its rub family name hardness is worth (MOH) for 3.
Limestone is one kind contains individual calcite the rock of mineral composition, calcite composition is occupied 95% , what its contain is additional a few mineral dolomite, siderite, quartz, feldspathic, mica and the clay mineral that can reflect Shi Caiyan quality pledge. The limestone with clean part is white. Limonite and siderite make limestone produces cinnamon design and color, be like sanguine, sea-green, chlorite ash of green, bitumen till black.
Produce change by the physics that eats floral skeleton fragment, limy mashed vegetable or fruit from the limestone in seawater and a variety of composition such as the organic matter in seawater are formed. After these organic other people are dead, carbonate is dissolved in seawater, accumulation is in marine, form calcium carbonate and conch to be organized character gradually. Normally limestone by cut hind, meeting discovery exists in stone material interior intact or the biology fossil that was destroyed.
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