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- kasenite pegmatite 霞辉碳酸盐伟晶岩
- Ore-bearing rock body is located at the top of" magma tree" within the belt of dimicaceous granite-granitic pegmatite. 含矿岩体位于“岩浆树”顶端-二云母花岗岩-花岗伟晶岩带。
- Donghu pegmatite deposit is characterized by granitic and completely differential pegmatite. 东湖伟晶岩矿床为花岗质完全分异式伟晶岩类型;
- Granite is the main source of feldspar for ceramic and porcelain industry after pegmatite. 摘要花岗岩是陶瓷工业中所需长石原料的重要来源之一。
- At pegmatite contacts the composition changes to chalcopyrite, millerite, pyrite, and violarite accompanied by magnetite and hematite. 在伟晶岩接触带,硫化物成分变为黄铜矿、针镍矿、黄铁矿及硫镍铁矿,伴生有磁铁矿和赤铁矿。
- The pegmatite Nb-Ta mineral veins were controlled by a group of horizontal tenso-shear axial-direction fault-fissure systems in the NNE direction folding structures. 铌钽伟晶岩矿脉受控于NNE向褶皱构造的一组近水平张扭性轴向裂隙系。
- The physlco-chemical conditions of formation of beryl have been explored based on inclusionstudies of beryls from the Altay pegmatite, Xinjiang. 本文利用包裹体研究探讨了新疆阿尔泰库威伟晶岩中绿柱石形成时的物理化学条件。
- The gem-grade beryl, topaz and rock crystal are occurred in the well differentiated hypermiarolitic Be-bearing granitic pegmatite. 分异良好的富晶洞含Be花岗伟晶岩,产宝石级的绿柱石、黄玉和水晶。
- As with other mines containing pegmatite rocks, Brazilian Alexandrite is found in rugged areas that can be difficult to access. 如其它含有伟晶岩的矿藏一样,巴西亚历山大石也只能在难以到达的崎岖地区所发现。
- Alto Ligonha is one of the world famous regions for its pegmatite where rare metals and rare earth,crystals and gemstone resources are abundant. 阿尔泰多金属矿带是世界上著名的铜-金-多金属成矿带,该带向东延伸至中国新疆北部阿尔泰地区,金、铜、多金属矿分布广泛。
- The average c_K/c_(Rb) value for the core margin K--feldspars isconsidered as a reliable indicator of the general level of the fractionation by the pegmatite. 围岩钾长石中钾铷的比值c_k/c_(Rb)一般被认为是“世代”和结晶分异总体水平的指示。
- The research of compositions of fluid-melt inclusions indicates that the genesis of Altai pegmatite was close ties with magmatic-hydrothermal transitional stage. 流体熔融包裹体成分研究表明阿尔泰伟晶岩成因与岩浆-热液过渡阶段有密切联系。
- The types of deposits basically are differential metasomatism in the later magma, pneumatolytic hydrothermal process, pegmatite process, residual deposits and placer deposits. 矿床类型以岩浆晚期分异交代型、气成热液型、伟晶岩型、风化壳型和砂矿型为主。
- Following the sparse Alexandrite veins through pegmatite rock with hand dug trenches, open pits and small tunnels, mining was very primitive to say the least. 他们赤手掘出壕沟,在伟晶岩石层中寻觅稀疏的亚历山大石矿脉,开坑打洞,开采无比原始。
- Beside fractional crystallization model,liquid immiscibility of Fluorine-rich granite magma is an important mechanism to form pegmatite and pegmatite type deposit. 除了结晶分异模式外,富氟花岗岩浆液态不混溶作用也是伟晶岩成岩成矿的重要机制。
- The local Pegmatite was introduced into the body mud of stoneware basing on research,analysis,and process test. The resources were exploited,the cost of production was decreased. 经调研分析及工艺试验,将本地伟晶岩引入炻器坯料中,开发了资源,降低了生产成本。
- African Alexandrite is typically located in wet regions near rivers and mined by digging through river beds by hand to unearth the Alexandrite rich pegmatite rock. 非洲亚历山大石都典型地分布于临河的湿润地区,赤手沿河床挖掘,开采富含亚历山大石的伟晶岩。
- Li- Be-Ta-Nb-bearing deposits in Lianyun Mountain occurred in Shangshi on the south wing of Lianyun Mountain anticline, the densely distributed pegmatite area. 连云山上石含锂铍钽铌矿床位于连云山背斜南翼上石伟晶岩密集区,其地层为板溪群二云母片岩。
- However,rubellite is extraordinarily rare ,and its concentration from pegmatite is comparatively difficult,so the product of white tourmalina powder with high purity is few in market. 然而,红色电气石自然界十分稀少,一般产在伟晶岩中它的提取又比较困难,所以市场上纯度高的白色电气石粉产品很少。
- A great quantity of fluid-melt inclusions was found in early-stage formed fluorite and quartz from aegirine-augite-barite pegmatite vein and carbonatite vein in Mianning REE deposit of Sichuan. 在四川冕宁稀土矿床霓辉重晶伟晶岩和碳酸岩矿体的早期萤石、石英中发现了大量的流体-熔融包裹体。