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What Is a Fissure. Granite is an igneous rock, which means it was created from hot lava flow from a volcano. Fissures are thin, nonstructural cracks that occur during the formation process of the granite.When two separate streams of molten lava or magma intersect, they can leave behind a small separation between them.ome types of granite like Absolute Black, which is a classification of stone known as a gabbro, rarely develop fissures, because the material making up the stone is extremely dense. Some types of granite, however, containing the mineral serpentine are extremely prone to fissures.
An anal fissure (fissure-in-ano) is a small, oval shaped tear in skin that lines the opening of the anus. Fissures typically cause severe pain and bleeding with bowel movements. Fissures are quite common in the general population, but are often confused with other causes of pain and bleeding, such as hemorrhoids.he typical symptoms of an anal fissure include severe pain during, and especially after, a bowel movement, lasting from several minutes to a few hours. Patients may also notice bright red blood from the anus that can be seen on the toilet paper or on the stool.