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Accessory Cr-Spinels in the Section of the Nude-Poaz Massif in the Monchegorsk (2.5 Ga) Mafic-Ultramafic Layered Complex (Kola Peninsula, Russia): Comparison with Ore-Forming Chromites.
- Source :
- Minerals (2075-163X); Jun2021, Vol. 11 Issue 6, p602-602, 1p
- Publication Year :
- 2021
-
Abstract
- The paper studies accessory Cr-spinels from deep drill holes crossing the Nude-Poaz massif, which is a part of the Monchegorsk mafic-ultramafic layered complex (2.5 Ga, Kola Peninsula, Russia). Cr-spinels occur as two morphological types that differ in their chemical composition, i.e., Cr-spinels of the first type are more aluminous, while Cr-spinels of the second type are more ferruginous and titaniferous. Cr-spinels of the Nude-Poaz massif are characterized by a Fe-Ti trend known for layered intrusions in the world. Cr-spinels of the Nude-Poaz massif quite clearly differ in composition from chromites of the Sopcheozero deposit: they are more ferruginous and less chromous. The specific composition of Cr-spinels in rocks of the Nude-Poaz massif can be correlated with the sequence of the magmatic phases intrusion. [ABSTRACT FROM AUTHOR]
- Subjects :
- CHROMITE
PENINSULAS
Subjects
Details
- Language :
- English
- ISSN :
- 2075163X
- Volume :
- 11
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- Minerals (2075-163X)
- Publication Type :
- Academic Journal
- Accession number :
- 151107305
- Full Text :
- https://doi.org/10.3390/min11060602