湘西北钟家铺钒矿地质特征及成因浅析

GEOLOGICAL CHARACTERISTICS AND BRIEF ANALYSIS ON THE FORMATION CAUSE OF ZHONGJIAPU NAVAJOITE AT THE NORTHWEST OF HUNAN PROVINCE

钟家铺钒矿的赋矿层位属南方有名的"下寒武统黑色含矿岩系"。矿石结构主要为泥质结构和显微鳞片泥质结构,构造主要为微层状、板状和致密块状;水云母是钒的主要赋存体,钒是以类质同象的形式产于水云母的晶格中。稀土元素特征反映钒矿石具有海相热水溶液的沉积特征。钒矿床在其形成和发展中,离不开生物地球化学作用,矿床成因属于生物地球化学沉积矿床。

The hosting ledge of Zhongjiapu navajoite belongs to the famous south lower Cambrian black ore-bearing rock series. The ore has the pelitic and microscale pelitic texture and the micro-bedded, tabular and dense massive structure. Navajoite is as isomorphism hosting in the lattice of hydromica which is the major hosting ore for navajoite. The characters of the rare earth elements show that the navajoite has the sedimentary characteristics of marine facies hydro solution. We concluded that the navajoite deposit belongs to the biogeochemistry sedimentary deposit.