The mineral matrix in Green River oil shale was partially removed by treatment with dilute HCI. The major ionic species in the solution from acid treatment (AT) were identified as NaC, A13+, Fe'+, Mg\*', and Ca\*+. The ion yields expected from reaction stochiometry, gravimetric analyses and comparis
Identification of arsenic-bearing minerals in a sample of Green River oil shale
β Scribed by James Jaganathan; Mysore S. Mohan; Ralph A. Zingaro
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 415 KB
- Volume
- 65
- Category
- Article
- ISSN
- 0016-2361
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β¦ Synopsis
The distribution of arsenic among the various components of a sample of Green River oil shale was investigated. Scanning electron microscopy with X-ray microanalysis, powder X-ray diffraction and inductively coupled plasma atomic emission spectrometry were used for identification. Approximately 65% of the total arsenic was found to be present as skuttemdite, (Co,Fe,Ni)As,, and safflorite, (Co,Fe)As,. The presence of these minerals in oil shales has not been previously reported.
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An ultrasonic field was found to enhance the rate of mineral dissolution from Green River oil shale matrix when treated with dilute HCI. This effect was most pronounced forcoarse particlesand minimal for finely pulverized shale. Data comparing the behaviour in an ultrasonic field with control specim
A thermal comparator method has been developed for the measurement of the thermal conductivity of oil shales from the Green River formation. Oil shales from two locations in the above formation were studied. Measurements were carried out in the temperature range 25-35O'C on oil shales assaying betwe
Oil shale of the Green River Formation (Eocene) in the Piceance Creek Basin, Colorado contains seven major iron-bearing minerals: pyrite, marcasite, pyrrhotite, Mg-siderite, Fe-dolomite, ankerite and Ca-ankerite. Only recently have workers recognized that these rocks contain large quantities of iron