The characteristics of diamond placer deposits on high terraces are examined, and it is suggested that these are of pyroclastic, rather than of alluvial, origin. The distribution of material does not point to streambed sorting, even though a crude sorting by overland runoff which originates in ...
1) types of PGE deposits 铂族金属矿床类型2) platinum-group metal ores 铂族金属矿3) metallic deposit type 金属矿床类型 例句>> 4) platinoid mineral 铂族金属矿石5) platinum-group metal placer 铂族金属砂矿 1. A mineralogical investigation of platinum-group metal placers from Burma was made...
Youngplacerdeposits年轻砂金矿床Intrusion-relateddeposits(PorphyrySkarn)侵入相关金矿床Depositshostedbybandediron-formations条带状铁矿容矿Depositshostedbyquartz-pebbleconglomerate角砾岩型金矿（石英－砾石容矿金矿床，Witwatersrand型）Typesofgolddeposits outline 造山型 世界黄金产量的11% 铁氧化物铜金型夕卡岩型 卡林型...
placer deposits 年轻砂金矿床 lIntrusion-related deposits (Porphyry Skarn) 侵入相关金矿床lDeposits hosted by banded iron-formations 条带状铁矿容矿 lDeposits hosted by quartz-pebble conglomerate 角砾岩型金矿(石英砾石容矿金矿床,Witwatersrand型)outlineoutlineTypes of gold deposits世界黄金产量的世界黄金产量的...
Chaco-Beni plain has extensive placer gold resources. Precambrian craton contains potential of gold, platinum, nickel, tantalum, copper, iron and manganese resources. Keywords: Andean metallogenic belt / copper-gold-tin-iron / ore deposits type / mineral resource potential / Bolivia 玻利维亚...
The gold grade and tonnage modelling is applied to some types of the gold deposits in China, including placer, Archaean lode, slate belt, Carlin, volcanoge... J Zhou,PG Flood,LI Wei - 《Resource Geology》 被引量: 3发表: 2010年 Grade and Tonnage Uncertainty Analysis of an African Copper...
generated from continental rocks by mechanical erosion are concentrated in placer deposits, which are sorted by water motion (waves, tides, currents) based sorted by water motion (waves, tides, currents) based on the constituent minerals’ variable density the variable density of the constituent ...
Rectangle compartment side way action type jig has two types.One is left compartment side way jig,another is right compartment side way jig.The jig has fixed screen.It's available in separating metallic ores,such as tungsten and gold placer deposits as well as beneficiated tin ore,which not...
The erosion of these granitic suites liberated thorium-rich uraninite which would then be concentrated in placer deposits along with pyrite and other heavy minerals (e.g., zircon, monazite, Fe-Ti oxides) within huge continental basins (e.g., Witwatersrand, South Africa, and Bind River, ...
The gem-gravel placer deposits of Sri Lanka contain aquamarine. Clear yellow beryl, such as that occurring in Brazil, is sometimes called aquamarine chrysolite. The deep blue version of aquamarine is called maxixe. Maxixe is commonly found in the country of Madagascar. Its color fades to white...