1) altered rhyolite
蚀变流纹岩
1.
The concentrations of rare earths(RE) in incipient weathering samples are enriched relative to fresh altered rhyolite in Longtang,Guangxi.
广西龙塘蚀变流纹岩在风化作用初期显示稀土元素一定的富集,但与风化母岩相比,稀土元素并未显示出分异特征。
2.
Combined ICP-MS and HR-EPMA analyses on the in-situ weathering profile developed in the altered rhyolite at Longtang of Guangxi revealed rhabdophane grains ranging in size from 3 to 10 μm in goethite in incipient weathering samples.
通过对发育在蚀变流纹岩之上的龙塘原地风化剖面样品进行ICP-MS和高分辨率电子探针分析,在初期风化样品的针铁矿中发现稀土磷酸盐矿物水磷铈石。
2) metarhyolites
变质流纹岩
3) wallrock alteration
围岩蚀变
1.
Discussion on the relationships between wallrock alterations and mineralizations in Bailashui tin mine in Qitianling,Hunan Province;
湖南骑田岭白腊水锡矿围岩蚀变与矿化关系浅析
2.
It is shown shat wallrock alteration is accompanied with each stage of Mo mineralization,and alteration types are different with different mineralization epoch,mineralization stage,and wallrocks.
研究表明,围岩蚀变始终伴随着钼成矿作用的每个阶段,且不同的成矿期和成矿阶段、不同的围岩,其蚀变类型不同;矿床蚀变分带明显,由岩体中心向外侧依次为钾长石化—硅化带(强蚀变带)、硅化—绢英岩化带(弱蚀变带)、硅化—青磐岩化带,强度由中心向外围逐渐减弱,其蚀变作用的强弱与钼矿体的品位高低相对应,确定硅化和钾长石化是该区最有效的找矿标志之一。
3.
Relationship among W mineralized concentration,ore-forming fluid evolution,wallrock alteration and elements migration are preliminary revealed.
文章以杨金沟白钨矿床主要赋矿蚀变围岩为研究对象,通过对不同种类蚀变岩石中主要氧化物和成矿元素特别是W、Mo和As的迁移和富集特征进行详细分析,结合近矿蚀变围岩稀土元素组成及其变化特征研究,初步揭示了杨金沟白钨矿床中钨矿化富集、成矿流体演化与围岩蚀变和元素组分迁移的关系。
4) wall-rock alteration
围岩蚀变
1.
Relationship between wall-rock alteration and gold mineralization of Huanxiangwa deposit,Henan Province;
河南萑香洼金矿床围岩蚀变与金矿化的关系
2.
The geologic features of Haigou Au deposit are briefly introduced based on geologic settings,ore-control factors,wall-rock alteration,mineralization and enrichment regularities.
本文从地质背景、控矿因素、围岩蚀变、矿化富集规律等方面扼要介绍了海沟金矿床的地质特征,并通过构造—岩浆活动、热液形成及演化、成矿物质的富集和沉淀等方面规律阐述了海沟金矿床的形成机制。
3.
By researching the wall-rock alteration and the relations of the gold mineralization in Shishudi gold deposits,it is found that silicification,pyrite,and K-feldspar are most closely related with gold mineralization in the alteration types.
通过对柿树底金矿床围岩蚀变特征与金矿化关系的研究发现:在蚀变类型中硅化、黄铁矿化、钾长石化与金矿化关系最为密切;蚀变演化划分为三个时期,三个时期根据时间与空间关系划分为四个阶段,其中第二阶段石英-钾长石-黄铁矿化阶段是主矿化阶段;围岩蚀变自中心向外划分为三个蚀变矿物组合带,其中核心带矿化蚀变岩带与金矿化关系最为密切。
5) alteration rock
蚀变岩
1.
In spacial distribution, these two have the following relations: the ore field has horizontal zoning , namely the alteration rock type is mainly along the main mineralizing fracture belt, while the quartz-vein type is mainly kept away from the main fracture belt.
胶东地区主要金矿类型可分为蚀变岩型和石英脉型2个大类。
6) wall rock alteration
围岩蚀变
1.
The features and geologic meanings of wall rock alteration in Shenjiaya gold deposit,Yuanling County;
沅陵沈家垭金矿床围岩蚀变特征及地质意义
2.
Discussion on relationship of the wall rock alteration and the mineralization of gold deposit in the Duhuangling gold area,eastern Jilin;
吉东杜荒岭金矿区围岩蚀变与金矿化关系
3.
The Au deposit of the Huishan belongs to ductile shear zone type one The types include carbonation,sericitization,silicification etc;the alteration zones are obviously,and altered intensity has a close relation with Au mineralization The alteration of wall rocks is affected by the ductile shear deformation;Au mineralization and main periods of wall rock alteration are simultaneously forme
狐狸山金矿是韧性剪切带型金矿床 ,矿区围岩蚀变发育广泛 ,类型有碳酸盐化、绢云母化、硅化等 ,蚀变分带明显 ,且蚀变强度与金矿化关系密切。
补充资料：流纹岩
| 流纹岩 rhyolite 一种酸性喷出岩。成分与花岗岩相当。灰白色或浅粉红色。常见有流纹构造和斑状玻璃质、球粒、霏细、显微文象等结构。斑晶常为石英、碱性长石，有时有少量斜长石；基质一般为致密的隐晶质或玻璃质。产状多为岩丘。脱玻化明显的流纹岩称为流纹斑岩。流纹岩在中国东南沿海各省有广泛分布，北方辽宁、内蒙古、河北、山西、山东、吉林、黑龙江也都有分布。与之有关的矿产有高岭石、蒙脱石、叶蜡石、明矾石和黄铁矿等。
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参考词条