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首页> 外文期刊>THE CANADIAN MINERALOGIST >THE VANADIUM-BEARING OXIDE MINERALS OF THE GREEN GIANT VANADIUM- GRAPHITE DEPOSIT, SOUTHWEST MADAGASCAR
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THE VANADIUM-BEARING OXIDE MINERALS OF THE GREEN GIANT VANADIUM- GRAPHITE DEPOSIT, SOUTHWEST MADAGASCAR

机译:含钒巨型钒 - 石墨矿床的钒氧化物矿物,西南部马达加斯加

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摘要

Rare vanadium-rich oxide minerals have been previously identified in graphite-bearing quartzo-feldspathic gneisses derived from shale protoliths. In this work, such minerals are described from the Green Giant vanadium-graphite property in southwest Madagascar. The vanadium-rich oxides include vanadium-bearing rutile (2.88 ?1.75% V_2O_3, n = 18), schreyerite, oxyvanite, and karelianite. These minerals have been previously identified together in the Sludyanka, Lake Baikal area. Green Giant is the second occurrence worldwide of oxyvanite, and within the oxyvanite梑erdesinskiite solid solution series Green Giant oxyvanites are the closest to endmember, with an average calculated mineral formula of (V_(1.49)~(3+)Cr_(0.50),Fe_(0.01)~(3+))S2.00V_(1.00)~(4+)O_5. Also found in this study is an unknown vanadium-titanium oxide mineral, UK1, which has a calculated formula of (V_(1.67)~(3+)Cr_(0.26)~(3+) Al_(0.06))_(S1.99)(V_(2.05)~(4+)Ti_(1.94)~(4+)):_(S3.99)O_(11) and may be related to the V_2Ti_4O_(11) reported previously from the Lake Baikal area.
机译:以前鉴定了富含石墨石英的石墨石墨藓石墨石石墨石膏的富含钒的氧化物矿物质。在这项工作中,这些矿物质是从马达加斯加西南部的绿色巨型钒 - 石墨物业描述。富含钒的氧化物包括含钒金红石(2.88〜1.75%V_2O_3,N = 18),Schreyerite,氧石和卡英特。这些矿物质以前已经在贝加尔湖湖泊区的斯拉邦卡签署。绿色巨头是全球氧气的第二次出现,而在氧气梑梑梑牛斯辛基钛矿固体溶液系列绿色巨氧化液是最接近端口的,平均计算的矿物配方(V_(1.49)〜(3+)CR_(0.50), FE_(0.01)〜(3 +))S2.00V_(1.00)〜(4+)O_5。本研究还发现是一种未知的钒 - 氧化钛矿物,UK1,其具有计算的公式(V_(1.67)〜(3+)CR_(0.26)〜(3+)AL_(0.06))_(S1。 99)(V_(2.05)〜(4+)Ti_(1.94)〜(4 +)):_(S3.99)O_(11),并且可能与前从贝加尔湖区域报告的V_2TI_4O_(11)有关。

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