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61. Many carbonate masses older than Middle Palaeozoic are of dolomite rather than calcite.

62. This thesis first finds that there are some needle-shaped calcite crystals in some soils of studyarea.

63. If you use a pocketknife to cut or scratch these two minerals, you will find that the pocketknife can scratch calcite and can not scratch quartz.

64. After the separation of quartz and calcite by flotation using anionic sodium oleate, cationic ether amine collector was used to float the chlorite, which exhibited a good selectivity.

65. Sulfide ore bodies are mainly composed of galena, sphalerite, calcite and minor amounts of pyrite and marcasite, with no quartz.

66. It is indicated that placer gold and antimonial (auriferous) quartz-calcite vein, calcite vein are the same origin, which are major of the metallic matter resources.

66. Sentencedict.com is a online sentence dictionary, on which you can find nice sentences for a large number of words.

67. The main mineral in this material is calcite. It is Greenish-brown in colour and is a porous material with a wide variety of shades ranging from dark to light brown.

68. Analcime is distributed in sparry calcite and early calcite cement is wrapped in natrolite cement, which shows that the formation of zeolite is later than that of sparry calcite.

69. Aragonite and magnesium calcite are more soluble than normal calcite.

70. The gangue mineral mainly consists of quartz and sericite, and then calcite, dolomite, chlorite and peat.

71. The main facies of Suining formation are ferruginous-shale film, anhydrite , dolomite and calcite.

72. Thes study and bring forward a new formula for acid bleaching of barite powders containing impurities such as fluorite and calcite.

73. The effect of TATMP on the growth rate of calcite crystals in supersaturated solutions is studied with seeded growth technique.

74. Widely distributed calcite and aragonite crystal in the cave passage are originated from ancient pool deposits.

75. The early-stage calcite fill has strong cathodoluminescence, while the late-stage one has no luminescence.

76. The DTA result shows that the decompositional of calcite and clinker-forming temperature of cement rawmaterialscontained are lower than those of non- fluorogypsum.

77. The main diagenetic minerals of the sandstone include calcite, chlorite, Quarta and kaolinite.

78. The composition analysis of five-component mixed minerals of siderite, kaolinite, dolomite, calcite and quartz has been analyzed inN_2.

79. The mineral composition is simple, only with original metallic minerals antimonite and pyrite, gangue minerals quartz, calcite and a few barites, all in the fissure or hole of the rock.

80. Rochon prism is an important beam splitting polarizer of calcite.

81. The antimony ores are mainly composed of such minerals as stibnite, quartz, opal and calcite.

82. The calcite crystals precipitated from pure supersaturated calcium carbonate exhibit mainly two habits:flat like rhombic crystal and rhombohedral crystal similar to a cube.

83. Ore minerals of Luchang-Datongchang Ag-Cu ores include chalcocite , digenite, bornite, stromeyerite and eucairite which are associated with calcite as a cement.

84. At first glance, calcite might be confused with quartz where both are clear, colorless, and " glassy ".

85. Grainstones are the main part of the section, among which the oolites, intraclast limestones and most bioclast limestones are cemented by sparry calcite.

86. It is indicated that the shell is composed of calcite with Rhombohedral structure as well as aragonite with Orthorhombic structure.

87. Fe-carbonates include early ankerite-dolomite, ankerite and later siderite with calcite and quartz.

88. The ore mineral assemblage of Dayishan wollastonite deposit is complex being composed of wollastonite, diopside, idocrase, K—feldspar, albite, calcite and quartz.