Limestone and marble are both natural stones composed primarily of calcium carbonate, but they differ significantly in geological formation, physical properties, appearance and application.
1. In terms of geological formation
Limestone is one kind of sedimentary rock. It is formed over millions of years, from the accumulation of shells, sand, and skeletons of marine life. Due to this formation process, it is generally soft and porous. Marble, is one kind of metamorphic rock. It is derived from limestone under high temperature and pressure. This transformation causes recrystallization, making marble denser and harder than limestone.
2. In terms of physical property
● Hardness
The Mohs hardness of limestone is around 3, while the Mohs hardness of marble is around 3-4. This indicates that marble is harder and more durable than limestone.
● Porosity
Marble has a lower porosity, usually around 0.06%- 1%, while limestone has a higher porosity, usually greater than 1%. This difference is primarily due to their formation process and mineral compositions.
● Density
Due to the metamorphic nature of marble, it is denser than limestone, this makes it more durable in a variety of applications.
3. In terms of appearance
● Color and pattern
Limestone usually exhibits organic colors, such as: brown and gray with visible fossil imprints. In contrast, marble exhibits a wider variety of colors—including white, black, pink, green, and blue. It often features distinctive veining patterns that enhance its beauty.
● Visual Texture
Marble has smoother and more refined appearance due to its crystalline structure, while limestone has more natural and simpler appearance.
4. In terms of application
Both limestone and marble are usually used in construction, however, their applications differ based on their properties. Marble is commonly used for countertops, sculptures, and high-end flooring due to its elegance and durability. While limestone is often used as paving stones and building materials.
Summary
Although the main component of marble and limestone are both calcium carbonate, they differ in geological structure, appearance and application, etc. However, in practical application, both marble and limestone usually need to be crushed and graded. This can not only ensure the consistency and uniformity of the material, but also improve construction efficiency and the quality of finished products.
The ball mill and air classifier from Qingdao Epic is suitable for deep-processing of limestone and marble. Qingdao Epic Powder Machinery Co., Ltd. is a manufacturer specializing in the production of powder machinery.
Our main products include:
– Mills: ball mill, air classifier mill(ACM), moinho de rolos, jet mill, turbo mill and impact mill, etc.
– Classifiers: include four series of air classifiers: HTS, ITC, MBS and CTC.
– Surface coating modifiers: pin-mill modifier, turbo-mill modifier and three-roller-mill modifier, etc.
– Auxiliary equipment: control cabinet, dust collector and bucket elevator, etc.
– Customers can customize products according to actual needs. One customer, one design.
If you are interested in ball mill and air classifier from Qingdao Epic, contact our staff directly, we are always at your service.
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