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61. The gold metallogeny is characterized by auriferous pyrite and occurred in the alternating layer of heavy-layer metasandstone, flaggy metasandstone and graphitization schist.

62. A new type of organic restrainer RC is introduced for separation of pyrite from chalcopyrite .

63. At the choosed conditions, oxidation rate of pyrite and arsenopyrite is 71.0% and 92.4% and decompound rate of nickel sulphide can reach to 88.8%.

64. Bacterial leaching of copper - bearing pyrite is studied by use of thiobacillus ferrooxidans.

65. Waste acid from a titan white plant was used directly to leach pyrolusite ore with addition of pyrite for making manganese sulphate.

66. The typomorphic characteristics of pyrite, in form, content, thermoelectricity and infrared spectrum of quartz, are instructively significant for prospect.

67. At pegmatite contacts the composition changes to chalcopyrite, millerite, pyrite, and accompanied by magnetite and hematite.

68. A systematic study on the characteristics in distribution, chemical composition, crystal texture, crystal morphology and pyroelectricity of pyrite has been made in the Wulong gold deposit.

69. The results show that taking pyrite tailings as major raw mat and adding small amount of other materials can produce the glass-ceramics with diopside as main crystal phase.

70. This paper involved chemical compositions and physical phases of iron pyrite cinder and the principle of extracting iron from the cinder acid leaching.

71. The experiment results show that the mass ratio of fly ash to pyrite residue, the dosage of acid, the soakage time and temperature are the main factors to the preparation of flocculence.

72. Goldoccurs mainly as independent minerals of Au Ag solid solution series, including electrum andnative gold pyrite is the main ore mineral and has a close relationship with gold.

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

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74. Liujiaping pyrite type massive sulfide copper ( zinc ) deposits would be shut in.

75. To that end, Wadia and his colleagues found that iron pyrite—better known as fool's gold—was several orders of magnitude better than any of the alternatives, based on both cost and abundance.

76. Thiobacillus ferrooxidans were introduced in the bioleaching process of pyrrhotite and pyrite for desulfurization.

77. The function of ultra fine grinding and alkali leaching is investigated, and the mechanochemistry mechanism of accelerating pyrite decomposition is discussed.

78. Metallic mineral excepting this native gold and native silver, as well as pyrite, stibnite, cinnabar, scheelite, dalarnite, magnetic iron ore, limonite.

79. Ore bearing stratum contain richly pyrrhotite, pyrite, spessartine and dannemorite.

80. Jarosite process was selected for iron removal due to the characteristics of the solution originated from the reduction leaching of manganese nodules by pyrite in chloride system.

81. The selective adsorption of Nocardia on the surface of pyrite and sphalerite was studied under various conditions.

82. Ores consist of pyrite, blende, aurum, zinckenite, tennantite, antimonite, realgar, and orpiment, belong to typical Low-temperature minerals assemblage.

83. In this paper,(sentencedict.com) a new method and its process flow to extract gold from refractory gold-bearing pyrite concentrate were introduced briefly. This method was known as Valukov method.

84. In this paper, the ESR (electron spin resonance) spectra of gold bearing quartz and pyrite have been systematically studied by means of JES FE1XG model ESR spectrometer.

85. The deep mineral potential of gold is evaluated by analyzing and testing the form, composition and thermoelectricity of pyrite in the Nanzhangjia gold deposit.

86. The principal minerals of lead - zinc deposit in Zhenxun are sphalerite, galena, pyrite, quartz and barite.

87. The extracting iron from pyrite cinder by reductive roasting and sulfuric acid leaching was investigated.

88. The utilization of nitrogen and energy sources by Thiobacillus ferrooxidans was investigated, and the removal of sulfur from coal pyrite exposed to the air for different time was studied.

89. A thick, square, iron pyrite mirror, inlaid with stucco plaques, was placed next to the female's right knee.

90. The sulfide assemlage consists largely of pyrrhotite, pentlandite, chalcopyrite, and pyrite.