![]() ![]() Barite is also used as a pigment in paints and as a weighted filler for paper, cloth and rubber. This flow of fluid does two things: 1) it cools the drill bit and, 2) the high-density barite mud suspends the rock cuttings produced by the drill and carries them up to the surface. These high-density muds are pumped down the drill stem, exit through the cutting bit and return to the surface between the drill stem and the wall of the well. Most barite produced is used as a weighting agent in drilling muds. ![]() However, any student who tests the specific gravity will discover that calcite or marble are incorrect identifications. Or the specimen of barite can naturally contain calcite. The students tested the hardness of the barite with a piece of calcite from their hardness kit. The duduk kasus is that the effervescence is caused by contamination. ![]() The mineral effervesces and they think that they have calcite or a piece of marble. They look at the specimen, see the sugary appearance, correctly attribute it to cleavage and apply a drop of dilute hydrochloric acid. In the classroom, students often have difficulty identifying specimens of massive barite with fine-grained crystals. Combine that with its low Mohs hardness (2.5 to 3.5) and its three directions of right angle cleavage, and the mineral can usually be reliably identified with just three observations. ![]() It is one of just a few nonmetallic minerals with a specific gravity of four or higher. In a few locations barite is deposited as a sinter at hot springs.īarite is generally easy to identify. It is found in association with ores of antimony, cobalt, copper, lead, manganese and silver. Mineral Barit is also a common mineral in hydrothermal veins and is a gangue mineral associated with sulfide ore veins. Occasionally barite is so abundant in a sandstone that it serves as the "cement" for the rock. They can be up to several inches in length and incorporate large numbers of sand grains. These structures are known as "barite roses" (see image at right). Sometimes crystals of barite grow into interesting shapes within the sand. These concretions grow as barite crystallizes within the interstitial spaces between sand grains. Mineral Barit is also found as concretions in sand and sandstone. ![]()
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