陕西红柱石矿及其资源潜力探讨

在宝鸡地区片岩型、接触变质岩型、中酸性火山变质岩型红柱石矿(化)均有分布,各种工业类型的红柱石矿齐全。在安康、汉中、商洛等地也发现了红柱石、硅线石、蓝晶石矿(化)线索。陕西红柱石矿找矿潜力大。     

西藏雄村斑岩型铜金矿红柱石成因矿物学特征

雄村斑岩铜金矿中广泛分布有红柱石,红柱石主要呈三种产出状态:①石英-钾长石-白云母/绢云母-红柱石组合;②红柱石-石英-绢云母/白云母组合;③石英-红柱石-硫化物脉.矿物组合关系、红柱石结构和成分等特征均表明红柱石属热液成因.早期钾硅酸盐化带中的石英-钾长石-白云母/绢云母-红柱石组合形成于高温(大于550℃)、低+K...     

新疆红柱石矿床地质特征及其成矿规律

新疆红柱石资源丰富,为新疆重要的非金属矿产,资源储量处在全国第一位。目前,新疆红柱石矿矿产地已发现有12处,其中有超大型1处,大型3处。红柱石是岛状结构无水铝硅酸盐矿物,属于斜方双锥晶系。红柱石具有在高温下一次性膨胀转化为莫来石后不再伸缩的特性,是优质的耐火材料。本文通过对从全疆12处红柱石矿床（点）的统计分析,从成矿地质背景、地域分布特征等方面着手,从成矿时间、空间、成因类型等几方面全面归纳其控矿要素,总结红柱石矿床的成矿地质规律,并指出找矿方向。     

河南桑坪粗晶红柱石特征及宝石利用探讨

巴西、澳大利亚、苏联、斯里兰卡、马达加斯加、缅甸等国产宝石级红柱石,其中巴西产宝石级红柱石驰名遐迩。我国已发现十余处红柱石矿床,但宝石级红柱石不多见。河南西峡桑坪粗晶红柱石矿可望成为宝石级红柱石产地。1.桑坪红柱石矿产出特征:桑坪红柱石矿位于豫西南西峡县境内,处于华北地台南缘,东秦岭褶皱系下古生界二郎坪群小寨组中。含矿层系浅海相含碳质的沉积变质岩。矿带长30     

桑坪红柱石物相分析方法研究

本文以桑坪红柱石矿的矿物组合为依据,建立了以铝量法为基础,铝铁比值法校正十字石的干扰,测定红柱石含量的物相分析方法。研究了红柱石在确定条件下的溶解规律,粒度效应及其它影响分析的因素。提出了接近矿区实际的、较准确的分析结果校正办法,制定了较合理的试样加工流程,效果良好。     

四川省道孚县容须卡地区红柱石矿地质特征及综合利用

红柱石作为高级耐火材料和提取硅铝合金的主要矿物,适用于冶金、建材、陶瓷、航空等多种行业。国内对红柱石的需求将随着社会经济发展日益增长。四川省容须卡构造岩浆热穹隆位于松潘—甘孜造山带东部,区域内广泛出露以三叠系西康群为主的被动陆缘复理石地层,构造岩浆热穹隆核部及四周为印支—燕山期花岗闪长岩和伟晶岩脉,热接触变质带中主要有红柱石二云母片岩、红柱石十字石云母片岩、含十字石红柱石二云母石英片岩和二云母片岩等岩石类型。片岩中富含红柱石、十字石等矿产,伟晶岩脉富含锂、铍等稀有矿产。四川道孚县容须卡地区红柱石中Al₂O₃含量为61.44%、SiO₂含量为37.11%、(K₂O+Na₂O)含量为0.18%、FeO含量为0.15%,可满足高级耐火材料、技术陶瓷和硅铝合金原料的工业要求。经过地质调查和资源潜力评价,远景预测资源量为2.3亿t,规模可达大型以上。四川康定—雅江—道孚红柱石资源蕴藏量大,随着国家建设重点向西部地区转移,资源综合利用优势明显,开发前景良好,有望成为我国最大的红柱石矿床或世界级大矿。通过进一步开展工作,开发后可缓解我国红柱石部分需要依靠进口的局势。     

新疆某红柱石矿工艺矿物学特征研究及选矿流程的选择

研究了新疆某红柱石矿的矿石性质及工艺矿物学特征,分析了这些对选矿选择的影响。最终对该红柱石矿采用重－－磁选矿工艺流程,得到合格的红柱石精矿,Ａｌ２Ｏ３含量大于５５％,总产率为７．６３％,总回收率为６３．６２％。     

河南省西峡桑坪粗晶红柱石矿床地质特征及成因分析

本文以西峡桑坪乡杨乃沟红柱石矿床为实例，论述了粗晶红柱石产出地质特征，并对矿床成因作了分析，含矿层属于下古生界二坪群小寨组，含矿岩性为含碳质石十字红柱石黑云石英片岩，原岩为浅海相沉积的富铝贫钙的粘土质泥质岩，经区域交质后又多次迭加热力接触变质作用，生成粗晶红柱石矿床。矿床主要特征是：矿层分布稳定，矿床规模大，红柱石结晶粗大、大多为自形晶，呈斑晶沿矿层层理分布。矿石物质组分简单，用是国内突起见，总结矿床特征、探讨矿床成因，为寻找同类型矿床具有重要意义。     

河南西峡伟晶红柱石矿物学特征及开发工艺的初步研究

河南西峡伟晶红柱石矿床是我国目前规模最大、质量最好、开发条件优越的超特大型矿床。红柱石矿物晶体粗大,晶形完整,以自形近正方柱状、菱形柱状及粒状为主,少量呈缺棱正方柱状及聚晶。晶体大小一般长６～９ｃｍ,横径３～５ｃｍ,最大者长可达３０ｃｍ,或横径８ｃｍ。颜色呈浅红、褐红、玫瑰红色、褐及灰白色等。硬度６．５～７,半透明－透明。利用其设计加工制作成各型戒面、钮扣、佩饰、串珠、项链、手链等工艺品,不仅填补了宝石市场上红柱石宝石家族的空缺,而且具有其独特的工艺特征,良好的加工性能和开发前景。     

河南西峡红柱石的高温性状和莫来石化行为

本文介绍河南西峡红柱石晶体、工业精矿及其制品的高温性状和莫来石化特征的工艺岩石学研究结果,并对西峡红柱石的工业应用提出建议。红柱石的结晶方向和煅烧温度控制其分解程度,而莫来石的形态取决于空间分布位置。西峡红柱石高温分解始于1300℃,1350—1400℃反应加速,添加剂将使分解温度降低50—100℃。因解理与裂理发育,西峡红柱石不适于用做粗颗粒骨料,但以细粉形式加入制品,则有良好效果。     

北京西山地区红柱石的成矿条件和工业可利用性评价

京西红柱石是典型的接触变质条件下形成的矿化区，控矿条件主要是：一是铝饱和程度高的沉积岩，二是燕山岩体侵入所产生的热变质作用。该地区红柱石矿床工业可利用性评价，曾一度认为红柱石选别怀不好而中断了地质工作。经过本次研究和试验，重新肯定了工业利用价值。红柱石含量居我国大型矿床之首，矿石量在１亿吨以上，矿物量大于２０００万吨，并具有开采条件好，交通便利等优越条件，是一个理想的红柱石原料生产基地。     

安仁红柱石的化学物相分析

根据安仁红柱石矿的矿物组合特征进行实验，采用铝量法测定矿区红柱石矿物含量，在所选实验条件下，对红柱石含量(w)为16．96％的样品进行20次测定，RSD为1．5％。     

电感耦合等离子体发射光谱法测定煤及煤灰样品中21个主次微量元素

对化学物相法分析矿石中红柱石的含量作了初步探讨。试样经氢氟酸冷浸12 h,过滤后残渣用过氧化钠熔融,热水提取,用乙酸锌标准溶液滴定三氧化二铝含量,最后以三氧化二铝的含量换算成红柱石的含量。结合青海乐都矿区红柱石与其伴生矿物的组成特点,试验了排除其他含铝矿物的工作条件与红柱石的溶解特性,并用人工模拟样品中的红柱石溶解率求得校正系数,确定了铝量法作为矿区红柱石化学物相分析方法。     

化学物相法测定矿石中红柱石的含量

用快速简便的标准加入无火焰原子吸收光谱法测定人血和动物血中有害元素铅和镉。与普通的标准加入法相比,此法在样品前处理、标准曲线绘制及样品结果计算上都有了很大的简化。方法检出限为铅2.00μg/L,镉0.30μg/L;回收率为铅99.5%~101.2%,镉99.7%~101.3%;精密度为铅0.95%,镉2.18%。方法灵敏度高,精密度好,适用于特定人群血液中铅和镉含量的普查。     

Geological Characteristics and resources comprehensive utilization of andalusite mine in Rongxuka area,Daofu County,Sichuan Province

As advanced refractory and main mineral for extracting silicon aluminum alloy, the andalusite can be used in industry of metallurgy, building materials, ceramics, aviation and so on. The demand for andalusite will keep increasing along with the development of social economy. Rongxuka tectonic-magmatic dome is situated in the east of Songpan-Ganzi Orogenic Belt in Sichuan Province, and the flysch strata of the passive continental margin dominated by Triassic Xikang Group are widely distributed in the area. The core and periphery of the tectonic-magmatic dome are intruded by Indo-China period granodiorite and pegmatite veins. The contact metamorphic zone is mainly andalusite two-mica schist, andalusite-staurolite-mica schist, staurolite-andalusite-contained two-mica schist, two-mica schist and so on. There are non-metal deposits such as andalusite, staurolite in the schist, and rare-metal deposits such as lithium and beryllium in the pegmatite veins. The Al₂O₃ and SiO₂ contents of the andalusite of Rongxuka area are 61.44% and 37.11%, and the (K₂O + Na₂O) and FeO are 0.18% and 0.15% respectively, which can meet the industrial requirement of advanced refractory, technological ceramic and silicon-aluminum alloy raw materials. By investigation on the spot, the authors identified the prospective andalusite resource of the area is 2.3 tons, above the standard of large scale. There is a considerable amount of andalusite resource in Kangding-Yajiang-Daofu belt of Sichuan Province. With the transference of the national construction focus toward western areas, there are remarkable advantages of the comprehensive utilization and favorable development prospect of andalusite deposit, which might hopefully become the biggest or world-class andalusite deposit in China. It may alleviate the condition that part of the minerals relies on importation.     

一种与断裂变质作用有关的新类型金矿床--新疆阿勒泰市萨热阔布金矿床

萨热阔布金矿床的围岩蚀变表现为一种线性的前进变质作用,使近矿围岩中的黑云母、角闪石晶体增大,并产生了硅线石、红柱石等低压型高温特征变质矿物,同时在含金石英岩中也出现了黑云母、角闪石、石榴石、绿帘石、阳起石、透闪石、菱铁矿等有特殊成因的变质矿物,而且含金石英岩的韧性剪切变形作用甚弱,这些地质特征明显不同于与黄铁绢英岩化退变质作用有关的构造蚀变岩型或剪切带型金矿床,它应该代表一种新的金矿类型,其形成过程可能与断裂变质作用有着内在的成因联系。     

Features of Minerogenic Series Related to Continental VolcanicRocks in the Southeastern Coastal Area of China-A Case Study of the Daiyunshan-ShiniushanVolcanic Depression in Fujian

The Daiyunshan-Shiniushan volcanic depression in Fujian Province is situated in a volcanic belt of the southeast coastal area in China along the west Pacific Ocean. A new breakthrough has been made in the exploration of gold and silver ore deposits in recent years. The minerogenic series of the Daiyunshan-Shiniushan volcanic depression is discussed in this paper based on the analysis of major metallogenic types and factors. According to the study of enormous ore deposits and occurrences in the study area, two minerogenic series have been recognized: 1. Late Jurassic Au-Ag-Pb-Zn minerogenic series related to intermediate-acid, acid volcanic formations; 2. nonmetallic minerogenic series (pyrophyllite, alunite pearlite, andalusite, zeolite, corundum and so on) related to intermediate and acid volcanic formations. The division and study of the minerogenic series have revealed metallogenic and time-space distribution characteristics of the ore deposits in the volcanic belt of the southeast coastal area in Ch     

Magmatic andalusite from the South Mountain batholith,Nova Scotia

Accessory andalusite has been found in some late-stage granitic differentiates of the South Mountain batholith. The andalusite is petrographically distinct from the andalusite of the thermal aureole, and it occurs in regions of the batholith which show little evidence of contamination by the country rocks. Analyses of biotites from andalusite-bearing and andalusite-free phases suggest that those coexisting with andalusite actually grew in equilibrium with the andalusite. It is concluded that magmatic andalusite must be confined mainly to water-saturated, peraluminous, epizonal granites, and some possible P-T paths for the crystallization of magmatic andalusite are considered.     

Developments of geochemical methods for ore prospecting in Bulgaria

Three periods in the development of geochemical methods for ore prospecting in Bulgaria may be distinguished — initial (1954–1960), middle (1961–1969) and contemporary (since 1970) — which are characterized by successively increasing numbers of samples and improving methods of geochemical data evaluation. Geochemical methods have been recognized as effective, rapid and relatively cheap methods for prospecting for ore deposits (Cu, Pb, Zn, Au, W, Mo, etc.), some nonmetalliferrous raw materials (fluorite, barite, phosphorites) and hydrocarbons. They are used in all stages of exploration at scales from 1:200,000 to 1:200. They have contributed to the elucidation of the ore perspectives in many regions, and a number of new ore bodies and deposits have been discovered.Basic geochemical methods applied to ore prospecting in the country utilize soil and rock to detect secondary and primary aureoles. Stream-sediment surveys, hydrochemical and atmochemical methods are of more restricted use. Samples are analyzed by emission spectrometry, atomic absorption and other methods. A united system of computerized processing of geochemical data has been developed, including automatic drawing of geochemical maps.Interpretation of the data consists in selection of prospective geochemical anomalies and prognostication of the composition, morphology, depth and industrial significance of hidden ore bodies. The main problem in the mathematical processing of data is the presentation of polydimensional results from analyses in the form of generalized quantities — multiplicative or additive geochemical indicator ratios for the type of mineralization, coefficients of zoning, intensity, etc. The geochemical indices for evaluation of the newly found anomalies are derived through studies of the primary geochemical aureoles of typical standard ore deposits.Residual secondary soil aureoles in most cases are well correlated in composition and structure with the ore bodies and primary aureoles which have generated them. Their successful use is related to the landscape-geochemical conditions in the ore regions. Micro- and macro-chemical zoning of ground waters and different concentration of soluble components in different elevation belts are used for evaluation of hydrochemical anomalies.