Supergene, manganiferous clay umbers are intimately associated with both the iron and barite deposits. |
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At Azegour, Morocco, uraninite occurs in tactite with molybdenite, chalcopyrite, barite, pyrite, hematite, and garnet. |
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He suggested the name barium for the element based on the scientific name for the Bologna stone, barite. |
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And the black smoker chimneys here, unlike most others in the world, are not built of sulfide minerals but of barium sulfate, aka barite. |
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We looked at outcrops by the open pit and saw vugs everywhere with remnants of fluorite and barite crystals. |
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Most specimens are on a typical brown goethite matrix and may have associated calcite, plattnerite, barite, fluorite, and hemimorphite. |
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Vein minerals are aragonite, barite, calcite, dolomite, quartz, sphalerite, and whewellite. |
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Vein minerals are barite, calcite, chalcopyrite, kaolinite, pyrite, sphalerite, and wurtzite. |
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The barite ore is massive and occurs within residuum derived from carbonate units. |
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Stoneham barite crystals have been on the market periodically since commercial operations took place about a decade ago. |
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These sedimentary rocks contain a high percentage of volcanic ash that provides the barium necessary for barite formation. |
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These molds are now lined with crystals of celestine, fluorite, pyrite, strontianite, dolomite, calcite, sphalerite, and barite. |
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Vug-filling minerals are barite, calcite, celestine, dolomite, sphalerite, and strontianite. |
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Recently, one of us saw a bin of silicified barite concretion fragments in a Utah rock shop that were being sold as cycad specimens. |
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They sometimes are found together with dolostone concretions, barite nodules, or phosphatic nodules. |
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The barite and calcite form excellent euhedral crystals in concretions within the Cretaceous-age Mancos Shale. |
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Its down-dip sulfide ores were sideritic and pyritic, with golden barite forming one of the gangue minerals. |
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It is dominated by the deposition of calcite with minor pyrite, marcasite, barite, anhydrite and gypsum. |
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The crystallized barite at this location occurs in several closely spaced bands of calcite-cemented septarian concretions. |
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In the largest pockets, pale blue barite crystals formed coatings to 1 cm thick on the calcite crystals. |
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In this section the barite zone occurs at the top of the first ridge, just above the transition from grass to bare shale. |
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Purple cubes to 2.5 cm on edge are sometimes found with long bladed crystals of pink barite. |
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Silica, iron and barite mineralizations are widespread along the basal detachment. |
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The order of deposition for the main vein minerals typically is dolomite, barite, and quartz. |
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Commonly associated minerals include orpiment, stibnite, a variety of sulfides and sulfosalts, calcite, and barite. |
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Concretions of chalcedony after barite can be confused with cycads, and the wise collector must learn to differentiate between the two. |
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The coarsely crystalline veins are composed predominantly of colorless barite and quartz and white chalcedony. |
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The shoots and stalks themselves are casts composed of combinations of chalcedony, quartz, calcite, and barite. |
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The main ore minerals are galena, chalcopyrite, sphalerite, and tetrahedrite that are associated with quartz and barite gangue. |
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Vein minerals are barite, calcite, chalcopyrite, galena, pyrite, and sphalerite. |
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Paragenetic evidence indicates that the manganese oxides are pre-or syngenetic with respect to the barite. |
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Associated minerals include pyrophyllite, lazulite, quartz, various brightly colored iron oxides, barite, and a suite of microcrystalline phosphates. |
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The Sherman mine has produced small, well-formed, pale blue, acicular aurichalcite crystals associated with cerussite, hemimorphite, smithsonite, rosasite, and barite. |
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The district also produced many other mineral species in attractive specimens, including honey-golden barite, fluorapatite, gold, polybasite, rhodochrosite, and tetrahedrite. |
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Veins of white barite occupy fractures in thin seams of coal. |
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The mine is Newfoundland's first barite producer to supply the east coast drilling industry in recent years. |
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A very small percentage of the concretions contain barite crystals. |
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In addition, some 14.5 Mct of diamond reserves, 80 Mt of coal reserves and 100 000 t of barite reserves were added. |
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Those who went had five stops on the trip and collected celestine, ulexite, malachite, duftite, alunite, rosasite, barite, cerussite, smithsonite, and wulfenite. |
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Fireside operates a high-grade white barite mine in British Columbia near the Yukon border, and a processing plant at Watson Lake, Yukon. |
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Abundant deposits of sulfate minerals, such as barite and celestite, are exploited for the preparation of metal salts. |
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Vein minerals are ferroan dolomite, barite, calcite, pyrite, and quartz. |
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There are significant resources of barite and construction materials, such as sand and gravel. |
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The crystallization of barite followed the calcite and quartz. |
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Strontianite forms soft, brittle crystals that are commonly associated with barite, celestine, and calcite in low-temperature veins. |
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Because of its solubility in common acids, witherite is preferred to barite in the preparation of other barium compounds. |
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White to yellowish calcite often fills the central part of the agate and must be dissolved away to expose the quartz, which is common, and the barite, which is less common. |
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Calcite and barite actually crystallize after the formation of chalcedony and quartz cease and often infill or possibly cause subsequent fracturing of the agate. |
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Vein minerals are barite, calcite, ferroan dolomite, and sphalerite. |
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Other mining referrals included the expansion of a coal mine operation in Nova Scotia and a proposed barite mine in Cape Breton. |
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The barite produced is suitable for filler applications or for use in drilling mud. |
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Other minerals associated with the orpiment crystals are white to colorless barite crystals, lemon-yellow crystalline masses of sulfur, and minor realgar. |
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It resembles barite, barium sulfate, but is much less common. |
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In addition, the raw material in China was transported to near-by factories involving practically no transport cost, while in the USA the cost to transport barite from the mines to the factories was substantial. |
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In particular, a program to measure barite and heavy metals potentially produced by the drilling operations may provide confirmation of the minimal impact predicted in the 2006 Comprehensive Study Report. |
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Dunlop Mining Corporation Limited has been issued a mining lease and plans to re-process barite tailings at Walton, Hants County, once the necessary approvals are obtained. |
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Kazakhstan is the world's largest producer of zinc, tungsten and barite. It is the second largest producer of silver, lead and chromium ore, and the third largest producer of copper and fluorites. |
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Free gold is visible on the surface, especially in zones rich in barite. |
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Skeletal feldspar grains contain ankerite rhombs, and tiny sphalerite, galena, barite, and siderite crystals. |
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Crystals of calcite, quartz, dolomite or barite may line small cavities in the rock. |
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The country also has significant deposits of gypsum, limestone, and smaller quantities of copper, silver, gold, barite, and dolomite. |
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Mining, especially of gypsum and salt and to a lesser extent silica, peat and barite, is also a significant sector. |
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Other minerals from the sedimentary rocks include pyrite, calcite, barite, manganite, and pyrolusite. |
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The accompanying heavy minerals were pyrite, scheelite, galena and barite. |
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These products are the raw materials that are used to produce most barite chemicals for use in applications such as optical glass, welding flux compounds, metallurgy, pyrotechnics, etc. |
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He said that Iran currently ranked 17th in terms of copper production and 8th in terms of barite and chromate production. |
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Noteworthy examples include anhydrite, barite, and celestine. |
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Ground barite is used principally as a pigment and filler in paints, as a filler in rubber goods, and in combination with other materials in drilling oil and gas wells. |
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The high Ba content is probably caused by authigenic accumulation of barite, although the source for authigenic accumulation of the element could be primary volcanic ash. |
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