河南西峡金红石矿矿石特征及品位的概率分布

文章详细阐述了矿石类型、结构构造、物质组成、金红石产出特征及钛的赋存状态并对大量样品分析结果进行了统计分析,查明统计总体包含三个成因总体,反映了金红石的两种物质来源,并主要经历了两次地质-地球化学作用过程。此外,还对矿石中金红石TiO_2与全钛的关系进行了研究,基本查明二者为直线型正相关,相关系数为0.74。     

硫酸铵熔矿测定矿石中稀土总量

目前,测定矿石中稀土总量大多采用碱熔或酸溶,其中以NaO_2碱熔为主。作者通过用(NH_4)_2SO_4熔矿测定某些矿石中稀土总量的试验,认为单独使用(NH_4)_2SO_4熔矿效果好,可降低生产成本,特别是对生产单位具有一定的应用价值。 1 试验部分 1.1 (NH_4)_2SO_4熔矿试验 取多份同一样品用(NH_4)_2SO_4和Na_2O_2分别进行熔矿试验。Na_2O_2熔矿测定稀土总量平均结果是     

Features of clay minerals in the YSDP102 core on the continental shelf of the southeast Yellow Sea

Ninety-eight clay mineral samples from the YSDP102 core were analyzed by x-ray diffractometer to study the four clay minerals: illite, chlorite, kaolinite and smectite. Twenty-eight samples had been analyzed on the laser particle-siz eanalyzer to reveal the particle features of the sediments. Distribution of the clay minerals and the particle characteristics in the YSDP102 core show that the core experienced three different depositional periods and formed three different sedimentary intervals due to different sediment sources and different depositional environments. Features of the clay minerals and the heavy minerals in the YSDP102 core indicate that coarse-grained sediments and fine-grained sediments result from different sources. The Yellow Sea Warm Current has greatly influenced the sedimentary framework of this region since the current‘s formation.     

孙权首开铁山

吴主孙权统一江南后,为保吴国的长治久安,在黄石铁山大规模开采铜铁矿藏制造刀剑、农具,富国强兵。黄石铁山是长江中游的璀璨宝地,熠熠生辉。铁山地处扬子准地台下扬子坳陷褶皱带的大冶坳陷褶皱朿内,按地质力学观点,属淮阳山字型构造前弧西翼。铁山侵入体为燕山早期产物,其矿床类型属接触交代型(矽卡岩型)铁铜矿     

白云鄂博铁矿边界品位优化的研究应用

本文通过对当前的铁矿石生产技术水平、铁矿石市场价格、生产成本等因素的分析研究,对多年未变的边界品位指标进行优化,可以保证在取得良好经济效益的前提下,充分利用矿产资源,达到延长矿山的开采年限的目的。     

金属锌的发展历史

锌的名称来源于拉丁文Zincum,意思是"白色薄层"或"白色沉积物",它的化学符号Zn也来源于此,其英文名称是Zinc。锌也是人类自远古时就知道其化合物的元素之一。锌矿石和铜熔化制得合金——黄铜,早为古代人们所利用。但金属状锌的获     

酒石酸异构体对EDTA间接滴定法测定矿石中三氧化二铝的影响

应用EDTA间接滴定法测定铝土矿、高岭土、黏土等矿石中的三氧化二铝,试验了不同种类的酒石酸掩蔽钛对三氧化二铝测定结果的影响。建议选择左旋体或右旋体酒石酸作掩蔽剂,尽量不要选择内消旋体酒石酸,更不能选择外消旋体酒石酸。采用酒石酸钾钠作掩蔽剂,三氧化二铝的测定结果良好,方法快速、简便。     

Giant Mineral Deposits and Their Geodynamic Setting in the Lanping Basin, Yunnan, China

There are giant mineral deposits, including the Jinding Zn-Pb and Baiyangping Ag-Co-Cu, and otherimportant mineral deposits (e.g., Baiyangchang Ag-Cu, Jinman Cu deposits, etc.) in the Lanping Mesozoic-Cenozoic Basin, Yunnan Province, China. The tabular ore-bodies and some veins hosted in terrestrial clastic rocks of the Mesozoic-Cenozoic age and no outcropping of igneous rocks in the giant deposits lead to the proposal of syngenetic origin, but the giant mineral deposits are not stratabound (e.g. MVT, sandstone- and Sedex-type). They formed in a continental red basin with intense crust movement. The mineralization is controlled by structures and lithology and occurs in different strata, and no sedimentary nature and no exhalative sediments are identified in the deposits. The deposits show some relations with organic matter (now asphalt and petroleum) and evaporates (gypsum). The middle-low-temperature (mainly 110℃ to 280℃) mineralization took place at a depth of about 0.9 km to 3.1 km during the early