Rublev Colours Barite is made using the highest quality white, natural barium sulfate ore. Its fine grind (3-micron median particle size), high specific gravity (4.3&#;5), and inertness make it ideal for grounds, to make white paint in watercolor, casein, and egg tempera, and as an extender pigment in oils and alkyds.
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Pigment Names
Mineral NamesEnglish: barite, baryte, bologna stone, bolognian spar, calk, cauk, cawkBarite is a mineral consisting of barium sulfate. The natural mineral is generally white or slightly colored due to the presence of impurities, and is the main source of barium. Baryte is the British spelling and the mineral is also called heavy spar. The radiating form of the mineral sometimes referred to as Bologna Stone, attained some notoriety among alchemists for the phosphorescent specimens found in the s near Bologna, Italy by one Mr. Vincenzo Cascariolo.
The name barite is derived from the Greek word βαρύς (heavy). In commerce, the mineral is sometimes referred to as "barytes." The term "primary barite" refers to the first marketable product, which includes crude barite (run of mine) and the products of simple beneficiation methods, such as washing, jigging, heavy media separation, tabling, flotation, and magnetic separation. Most crude barite requires some upgrading to minimum purity or density. Barite that is used as an aggregate in "heavy" cement is crushed and screened to a uniform size. Most barite is ground to a small, uniform size before it is used as a filler or extender, an addition to industrial products, or a weighting agent in petroleum well drilling mud.
Barite commonly occurs in lead-zinc veins in limestone, in hot spring deposits, and with hematite ore. It is often associated with the minerals anglesite and celestine.& Barite is mined in Canada and Mexico and, in the United States in Arkansas, Missouri, Georgia, and Nevada. It is also prepared synthetically, called "blanc fixe," either by treating a solution of a barium salt with sodium sulfate or as a by-product in the manufacture of hydrogen peroxide.
Barite is unaffected by dilute acids and alkalis. It is compatible with all pigments and in all vehicles.
Barite absorbs 11 grams of oil per 100 grams of pigment. It readily mixes with oil and water to form a smooth paste.
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Although barite contains a "heavy" metal (barium), it is not considered a toxic chemical by most governments because of its extreme insolubility. Care, however, should be used in handling the dry powder pigment to avoid breathing the dust.
Pigment Information
Color:WhiteColour Index:Pigment White 22Chemical Name:Barium sulfateChemical FormulaBaSO4ASTM Lightfastness RatingAcrylic:Not ratedOil:Not ratedWatercolor:Not ratedPropertiesPurity:98% BaSO4Specific Gravity:4.50Density:4.5 g/cm3Mohs Hardness:3&#;3.5Refractive Index:nα= 1.634; nβ= 1.636-1.638; nγ= 1.646-1.648Median Particle Size:3 micronsWeight % Retained on 325 Mesh Sieve0%Loose Dry Bulk Density:75 lbs/ft3Compacted Dry Bulk Density:115 lbs/ft3Weight/Solid Gallon:135.82Bulking Value:0. galOil Absorption:11 grams oil/100 grams pigmentBarite (BaSO4) is the most common mineral of Barium. It occurs as a vein filling and as a gangue mineral in silver, zinc, copper, nickel and lead ores. It is colourless or white, often tinged with yellow, red, brown or bluish. Barite is used in the production of wallpaper and asbestos goods as well as in the manufacture of white paint.
Barite (barium sulphate) is a fairly common heavy mineral that often occurs in Pb-Zn ore deposits as a gangue mineral, in sedimentary deposits, and rarely in basalts. When found in sufficient quantity, it is mined for it&#;s barium content. It occurs either in crystalline form, as tabular, prismatic, or bladed crystals, sometimes as a &#;cockscomb&#; habit, or else massive. It is often colourless, cream-coloured or white, but may also be yellow, blue, pink or brown.
Barite, a name that was derived from the Greek word &#;barus&#; (heavy), is the mineralogical name for barium sulfate. In commerce, the mineral is sometimes referred to as &#;barytes.&#;
The term &#;primary barite&#; refers to the first marketable product, which includes crude barite (run of mine) and the products of simple beneficiation methods, such as washing, jigging, heavy media separation, tabling, flotation, and magnetic separation. Most crude barite requires some upgrading to minimum purity or density. Barite that is used as an aggregate in a &#;heavy&#; cement is crushed and screened to a uniform size. Most barite is ground to a small, uniform size before it is used as filler or extender, an addition to industrial products, or a weighting agent in petroleum well drilling mud specification barite. Although barite contains a &#;heavy&#; metal (barium), it is not a toxic chemical under Section 313 of the Emergency Planning and Community Right-to-Know Act of , because it is very insoluble.
Barite (spelled baryte in British publications) was named from the Greek word baros which means weighty, a reference to its unusually high specific gravity. (Specific gravity is a mineralogist&#;s measure of the density of a mineral; this is done by comparing the weight of the mineral to the weight of an equal volume of water.)
Chemical Formula: BaSO4
Composition: Molecular Weight = 233.39 gm
Barium 58.84 % Ba 65.70 % BaO
Sulfur 13.74 % S 34.30 % SO3
Oxygen 27.42 % O
______ ______
100.00 % 100.00 % = TOTAL OXIDE
Empirical
Formula: Ba(SO4)
Environment: Sedimentary rocks and late gangue mineral in ore veins.
Barium: used as a heavy additive in oil-well-drilling mud; in the paper and rubber industries; as a filler or extender in cloth, ink, and plastics products; in radiography (&#;barium milkshake&#;); as getter (scavenger) alloys in vacuum tubes; deoxidizer for copper; lubricant for anode rotors in X-ray tubes; spark-plug alloys. Also used to make an expensive white pigment.
By far, the principal use for barite is as a &#;weighting agent&#; in oil and natural gas drilling. In this process, barite is crushed and mixed with water and other materials. It is then pumped into the drill hole. The weight of this mixture counteracts the force of the oil and gas when it is released from the ground. This allows the oil and gas rig operators to prevent the explosive release of the oil and gas from the ground. Currently, over 75% of barite consumption in the U.S. is for this drilling application. However, the consumption in drilling &#;mud&#; fluctuates from year to year, as it is dependent on the amount of exploration drilling
for oil and gas, which in turn depends on oil and gas prices.
BARITE (Barium Sulfate) with the chemical formula of BaSO4. is used as a weighting agent in all types of drilling fluids. Application of barite , Increase mud density up to 21 lb/gal (2.5 g/cm3)
&#; Control formation pressure
&#; Stabilize the borehole
&#; Prepare solids-laden plugs for well control applicatio
Other Uses: leather tanning, lubricating compositions, fire retardants, decolorizing agent in petroleum, deodorizer, firming agent, dyeing mordant, foaming agent in firefighting foams, fireproofing cloth, catalyst, PH control, waterproofing concrete, aluminum compounds, zeolites etc.
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