MICRO-PIXE ANALYSIS OF FRAMBOIDAL PYRITE AND ASSOCIATED MACERAL TYPES IN OIL-SHALE
MICRO-PIXE ANALYSIS OF FRAMBOIDAL PYRITE AND ASSOCIATED MACERAL TYPES IN OIL-SHALE
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DOI：
10.1016/0016-2361(95)98355-i
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发表时间：
1995-04-01
期刊：
影响因子：
7.4
通讯作者：
ROBERTSON, JD
中科院分区：
文献类型：
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作者：
GRAHAM, UM;ROBERTSON, JD
使用微分析粒子诱导 X 射线发射 (PIXE) 技术研究了泥盆纪油页岩的草莓状黄铁矿和相关显微组分类型的元素组成。 大多数 PIXE 分析是使用 750 keV 质子束进行的，以研究硫和铁的浓度。 使用 3 MeV 的质子轰击能量分析了草莓状体和相关显微组分中的痕量金属。 比较了草莓状体和伴生的烟煤和藻岩显微组分的 S/Fe 原子比和微量元素组成，并提出了页岩中草莓状体的形成机制。 有人认为，草莓状物质的形成可能取决于邻近有机相中的元素浓度，在本例中为沥青岩显微组分。
The elemental compositions of framboidal pyrite and associated maceral types of a Devonian oil shale were investigated using a micro-analysis particle-induced X-ray emission (PIXE) technique. The majority of the PIXE analyses were performed using a 750 keV proton beam to investigate sulfur and iron concentrations. Trace metals in the framboids and associated macerals were analysed using a proton bombarding energy of 3 MeV. The S/Fe atomic ratios and trace element compositions of the framboids and associated bituminite and alginite macerals are compared and a mechanism of formation of framboids in shales is proposed. It is suggested that the formation of framboids may depend on the elemental concentration in the neighbouring organic phase, in this case the bituminite macerals.