 | | Journal (article/letter/editorial) | | composition of gases from such rocks differ from massif to massif. What is more, the gas phase of the intrusive...principal minerals of these rocks. For instance, nepheline has the highest content of the hydrocarbon gases...and the gas phase in five samples of the Goryachegorsk massif rocks. The gas was extracted by a mechanical...Cdi sp , in the rock. The middle Tatar alkalic massif is situated within the Yenisey Range, western part...folded fringe. Here an intrusion of aegirine-nepheline syenites cuts the Sinian limestones and metashales |  | Mikhaylov, B.M., Bronevoy, V. A., Bykov, A. D., Dantsig, S. Ya., Moshkin, V. N., Orlova, M. P., Khoreva, B. Ya., Pivovarov, V. V. (1977) Geological prerequisites for expanding the raw-material base of the aluminum industry in Siberia and the far East. International Geology Review, 19 (10) 1216-1224 doi:10.1080/00206817709471126 | Journal (article/letter/editorial) | | mastery TABLE 1. Average chemical composition of nepheline ores. Content, % Region Kola peninsula <0 ■*-»... Kiya-Shaltyr Krasnoyarsk region, Goryachegorsk massif 00 O Type of ore Nepheline con centrates from...from apatite-nepheline rocks Urtites, ijolites Af..03 SiOj Fej03 CaO P.,0 29.5 43.0 3.5 1.5...22.2 43,9 21.8 53 Armenian SSR, Nepheline and Tezhsar massif pseudoleucitenepheline sy enites metallurgy...of aluminum, in particular, the high-quality nepheline rocks, anorthosites, alunites, quartzalumina rocks |  | | Journal (article/letter/editorial) | | the average composition of rocks of the Khibiny massif the Au content is 4-10-7 and the Ag content, 1...( Kukharenko et al., 1971), and in the Lovozero massif the Ag content is 10 ■ 10-4 Ag (Gerasimovskiy et... The mean silver content in the Tezhsar alkali massif (Armenia) has been found to be 2-10-4 (Meliksetyan...Proterozoic Yelet'ozerskiy massif ( Karelia), the Devonian Goryachegorsk, Liyashaltyr ( Kuznetsk Alatau)...Baykal region) massifs, the upper Paleozoic Zardalek massif ( Tien Shan), and the Tertiary Tezhsar ( Armenia) |  | | Journal (article/letter/editorial) | | alkalic rocks (alkalic syenites and granosyenites, nepheline syenites, theralites, etc. ) in many massifs of...Kuznetsk Alatau, including Bulan-Kul', Burov, Goryachegorsk, TuyimKarysh, and others. They are Devonian...IN ALKALIC ROCKS In the Burov and Bulan-Kul' nepheline syenites, the rock-forming minerals are generally...(perthite), pyroxene (augite or aegirine-augite), nepheline, brown-fallow hornblende. Biotite is present almost...consists mainly of feldspar and plagioclase. Nepheline grows after the plagioclase and constitutes not |
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