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词汇 dolomite
释义

Definition of dolomite in English:

dolomite

noun ˈdɒləmʌɪt
mass noun
  • 1A translucent mineral consisting of a carbonate of calcium and magnesium, usually also containing iron.

    白云石

    Example sentencesExamples
    • Helicopters dropped 5,000 tonnes of sand, boron, dolomite, clay and lead onto it.
    • On the dumps I found galena, pyrite, and rugs full of quartz, dolomite, and a few tiny, water-clear fluorites.
    • Vein minerals are ferroan dolomite, barite, calcite, pyrite, and quartz.
    • Vein minerals are aragonite, barite, calcite, dolomite, quartz, sphalerite, and whewellite.
    • The mine produced excellent dolomite crystals that are arguably the best for the species from the United States.
    • In addition to large dolomite crystals, calcite " fans " and similar structures are frequently observed.
    • The order of deposition for the main vein minerals typically is dolomite, barite, and quartz.
    • Barite, dolomite, and quartz crystals were scattered on the surfaces of the calcite.
    • Vein minerals are barite, calcite, ferroan dolomite, and sphalerite.
    • Belgium is also an important producer of several industrial minerals, including limestone, dolomite, whiting, sodium sulfate, silica sand, and marble.
    • Thus. it is clear that at one point in the history of these specimens they appeared as normal quartz crystals perched upon a matrix of rhombohedral carbonate, likely dolomite.
    • Military personnel were called on to drop thousands of tons of sand, clay, lead, dolomite, and boron on the damaged reactor to smother the radiation stream, often without adequate protection.
    • Red chalcedony-lined geodes were prevalent at one time, their inclusions typically being quartz, calcite, ferroan dolomite, and iron sulfide microcrystals.
    • Other carbonates, like dolomite, will fizz in cold acid only after they have been powdered.
    • The concretion matrix is dominantly an interlocking mosaic of calcite, ferroan dolomite and quartz.
    • Many choice specimens of sphalerite, calcite, galena, and dolomite could be collected from pillars and small areas not previously mined.
    • Now, not in competition with dolomite, the quartz was able to form better-developed crystals.
    • They are easy to grow - simply make a trench in prepared soil, dust with dolomite, add some blood and bone or animal manure with a light sprinkle of sulphate of potash.
    • Orissa is rich in bauxite, the mineral that contains aluminium's raw material, as well as coal, limestone, silica, chromite, dolomite and nickel, to mention a few sources of its mineral wealth.
    • A 2000 study detected lead in some supplements made from oyster shells, the mineral dolomite, and bone meal.
    1. 1.1 A sedimentary rock formed chiefly of dolomite.
      白云岩
      Example sentencesExamples
      • The Blaine Formation is over 200 m thick, composed of interbedded mudstone, gypsum in beds up to 10 m thick, and has regionally traceable members of limestone and dolomite.
      • Polyphase deformation accompanied metamorphism of the original sediments, that were probably dolomite, shales and siltstones.
      • Shallow soils and rock outcrops of limestone or dolomite characterize these glades; dry conditions prevail during the growing season, although soils can be saturated or flooded in winter and spring.
      • Near site 8, late Jurassic limestone and dolomite are shown in white.
      • It is well cemented with early iron oxide, quartz overgrowth and clay cements with some dolomite blocking pore throats.
      • Middle Triassic anhydrite and dolomite form a sequence of strong reflectors, as does Lower Cretaceous sandstone.
      • Warren and Cook stated that crystals of gypsum have been found as a late-stage mineral on altered dolomite.
      • He's a rugged 55-year-old American expat who runs a mining operation that supplies magnesium-rich dolomite to banana growers.
      • The minerals are deposited in lakes, deltas and meander further downstream, where they build up and form sedimentary rocks such as calcite, selenite, pyrite and dolomite.
      • It lies within the Valley and Ridge physiographic province which is characterized by a predominance of dolomite and limestone interposed with shale and sandstone.
      • The bedrock is dolomite with pH of 7-8, which is 15-24 m below the surface.
      • This correlation is also expressed in the displacement pressures from mercury injection capillary measurements, which permit the identification of four major and two minor dolomite reservoir rock types.
      • The formation is composed largely of dark limestone and dolomite.
      • Striking specimens of red cuprite-included calcite and dolomite were once commonly available.
      • The host rocks for these deposits include limestone and dolomite that have undergone dissolution by low-temperature fluids, either before or during the mineralizing event.
      • The same is true for dolomite in limestone, at least at relatively low temperatures.
      • The chemical composition of eggshell includes calcium and phosphorus, in similar proportions to bone, or to the rock called dolomite.
      • In the Mesozoic, and into the Paleocene, limestone and dolomite interbedded with shale, clay and anhydrite prevailed in a more restricted, shallow marine to lagoonal environment.
      • There are significant differences in the clay mineral compositions of the Barton Creek dolomite, spheroid and diamictite units.
      • Underlying the glacial deposits is approximately 330 ft of Devonian limestone and dolomite.

Derivatives

  • dolomitic

  • adjective dɒləˈmɪtɪkˌdɑləˈmɪdɪk
    • The Barton Creek dolomite is in fact a dolomitic limestone, strongly recrystallized.
      Example sentencesExamples
      • The formation attains a maximum thickness of 160 m and contains a variety of lithologies including dolomitic limestones, tuffs, siltstones and shales.
      • The cavity was in relatively dense dolomitic limestone, suggesting that recovery of undamaged specimens could present a problem.
      • The section consists of calcareous shale with intercalated sparse limestone beds, dolomitic shales, and some dolostone beds.
      • If considered irrespective of depth, limestones and dolomitic limestones are more porous than dolostones, whereas at burial depths of greater than 2000 m dolostones are significantly more porous and permeable than limestones.

Origin

Late 18th century: from French, from the name of Dolomieu (1750–1801), the French geologist who discovered it, + -ite1.

Definition of dolomite in US English:

dolomite

noun
  • 1A translucent mineral consisting of a carbonate of calcium and magnesium.

    白云石

    Example sentencesExamples
    • The concretion matrix is dominantly an interlocking mosaic of calcite, ferroan dolomite and quartz.
    • Vein minerals are ferroan dolomite, barite, calcite, pyrite, and quartz.
    • The order of deposition for the main vein minerals typically is dolomite, barite, and quartz.
    • Orissa is rich in bauxite, the mineral that contains aluminium's raw material, as well as coal, limestone, silica, chromite, dolomite and nickel, to mention a few sources of its mineral wealth.
    • On the dumps I found galena, pyrite, and rugs full of quartz, dolomite, and a few tiny, water-clear fluorites.
    • Military personnel were called on to drop thousands of tons of sand, clay, lead, dolomite, and boron on the damaged reactor to smother the radiation stream, often without adequate protection.
    • Barite, dolomite, and quartz crystals were scattered on the surfaces of the calcite.
    • A 2000 study detected lead in some supplements made from oyster shells, the mineral dolomite, and bone meal.
    • Helicopters dropped 5,000 tonnes of sand, boron, dolomite, clay and lead onto it.
    • Many choice specimens of sphalerite, calcite, galena, and dolomite could be collected from pillars and small areas not previously mined.
    • Thus. it is clear that at one point in the history of these specimens they appeared as normal quartz crystals perched upon a matrix of rhombohedral carbonate, likely dolomite.
    • Red chalcedony-lined geodes were prevalent at one time, their inclusions typically being quartz, calcite, ferroan dolomite, and iron sulfide microcrystals.
    • Other carbonates, like dolomite, will fizz in cold acid only after they have been powdered.
    • Vein minerals are aragonite, barite, calcite, dolomite, quartz, sphalerite, and whewellite.
    • Vein minerals are barite, calcite, ferroan dolomite, and sphalerite.
    • In addition to large dolomite crystals, calcite " fans " and similar structures are frequently observed.
    • Now, not in competition with dolomite, the quartz was able to form better-developed crystals.
    • The mine produced excellent dolomite crystals that are arguably the best for the species from the United States.
    • They are easy to grow - simply make a trench in prepared soil, dust with dolomite, add some blood and bone or animal manure with a light sprinkle of sulphate of potash.
    • Belgium is also an important producer of several industrial minerals, including limestone, dolomite, whiting, sodium sulfate, silica sand, and marble.
    1. 1.1 A sedimentary rock formed chiefly of dolomite.
      白云岩
      Example sentencesExamples
      • The bedrock is dolomite with pH of 7-8, which is 15-24 m below the surface.
      • The minerals are deposited in lakes, deltas and meander further downstream, where they build up and form sedimentary rocks such as calcite, selenite, pyrite and dolomite.
      • He's a rugged 55-year-old American expat who runs a mining operation that supplies magnesium-rich dolomite to banana growers.
      • Warren and Cook stated that crystals of gypsum have been found as a late-stage mineral on altered dolomite.
      • Shallow soils and rock outcrops of limestone or dolomite characterize these glades; dry conditions prevail during the growing season, although soils can be saturated or flooded in winter and spring.
      • The host rocks for these deposits include limestone and dolomite that have undergone dissolution by low-temperature fluids, either before or during the mineralizing event.
      • There are significant differences in the clay mineral compositions of the Barton Creek dolomite, spheroid and diamictite units.
      • Underlying the glacial deposits is approximately 330 ft of Devonian limestone and dolomite.
      • Polyphase deformation accompanied metamorphism of the original sediments, that were probably dolomite, shales and siltstones.
      • Near site 8, late Jurassic limestone and dolomite are shown in white.
      • The formation is composed largely of dark limestone and dolomite.
      • This correlation is also expressed in the displacement pressures from mercury injection capillary measurements, which permit the identification of four major and two minor dolomite reservoir rock types.
      • Middle Triassic anhydrite and dolomite form a sequence of strong reflectors, as does Lower Cretaceous sandstone.
      • The Blaine Formation is over 200 m thick, composed of interbedded mudstone, gypsum in beds up to 10 m thick, and has regionally traceable members of limestone and dolomite.
      • The same is true for dolomite in limestone, at least at relatively low temperatures.
      • The chemical composition of eggshell includes calcium and phosphorus, in similar proportions to bone, or to the rock called dolomite.
      • In the Mesozoic, and into the Paleocene, limestone and dolomite interbedded with shale, clay and anhydrite prevailed in a more restricted, shallow marine to lagoonal environment.
      • It lies within the Valley and Ridge physiographic province which is characterized by a predominance of dolomite and limestone interposed with shale and sandstone.
      • Striking specimens of red cuprite-included calcite and dolomite were once commonly available.
      • It is well cemented with early iron oxide, quartz overgrowth and clay cements with some dolomite blocking pore throats.

Origin

Late 18th century: from French, from the name of Dolomieu (1750–1801), the French geologist who discovered it, + -ite.

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