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(Tables, page 14 and 15) Chemical composition of manganese nodules embedded in the grey shales of the Pasquia Hills, Saskatchewan

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DataONE2018-04-19 更新2024-06-08 收录
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The basal few hundred feet of grey shales from the Ruling Mountain formation in the Pasquia Hills, Saskatchewan contain nodular concretions rich in iron and manganese. The nodules are resistant to erosion and are abundant in stream beds thereby providing a ready guide to prospecting for their outcrops. The manganiferous horizon is exposed on the Wakei, Whitepoplar and Bainbridge rivers and in several of the canyons on the north slope of the hills as far west as the Man River. The nodules occur in layers as long as 20 to 30 feet and never greater than one nodule thick. In dividual concretions are egg-shaped or disk-shaped with a thickness a one 1 to 6 inches and equivalent diameters although rare specimen are 20 inches in diameter. Being light grey to greenish grey they are often covered by athin (5mm or less) black or light brown skin. The Pasquia nodules are similar geologically and mineralogically to a vast deposit of manganese nodules which occurs near Chamberlain, South Dakota.

加拿大萨斯喀彻温省(Saskatchewan)帕夸希丘陵(Pasquia Hills)的鲁林山组(Ruling Mountain formation)底部数百英尺的灰色页岩中,赋存富含铁与锰的结核状结核体(nodular concretions)。该类结核抗侵蚀性较强,且在河床中大量产出,因此可作为勘探其露头(outcrops)的便捷找矿标志。含锰层位(manganiferous horizon)出露于韦基河、怀特波普勒河与班布里奇河沿岸,以及丘陵北坡的多条峡谷中,西至曼河(Man River)。结核呈层状产出,单层长度可达20至30英尺,且单层厚度从不超过单个结核的厚度。单个结核体呈卵形或盘形,厚度为1至6英寸,直径与厚度大致相当;极少数标本的直径可达20英寸。结核整体呈浅灰至绿灰色,表面常覆盖一层薄(5毫米及以下)的黑色或浅棕色外壳。帕夸希丘陵产出的结核,在地质学与矿物学特征上,与南达科他州(South Dakota)张伯伦附近产出的大规模锰结核矿床极为相似。
创建时间:
2018-04-20
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