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Hingganite-(Y) from a small aplite vein in granodiorite from Oppach, Lusatian Mts., E-Germany

Citation

Thomas, R and Davidson, P, Hingganite-(Y) from a small aplite vein in granodiorite from Oppach, Lusatian Mts., E-Germany, Mineralogy and Petrology, 111, (6) pp. 821-826. ISSN 0930-0708 (2017) [Refereed Article]


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DOI: doi:10.1007/s00710-016-0489-4

Abstract

Crystals of hingganite-(Y) occur co-trapped in quartz crystals from miarolitic cavities in an aplite vein in the Cadomian granodiorite from Oppach/Lusatian, Germany. We describe the chemical composition and provide a reference Raman spectrum of this mineral, for which little useful spectral data has been published. In addition, we provide some inferences as to the genesis of this mineral in relationship to melt and fluid inclusions in quartz. The paragenetic sequence of minerals conserved only as small crystal inclusions in quartz, demonstrates an unusual occurrence in the Lusatian aplites, characterized by an unusual, extremely water-rich, near-supercritical melt-fluid system with high concentrations in alkali carbonates and sulfates. We propose that a sulfate-rich system was responsible for the fixation of Be and REE as hingganite-(Y), rather than the more common beryl + REE mineral assemblage. This may provide an explanation for the formation of this otherwise rare mineral.

Item Details

Item Type:Refereed Article
Keywords:hingganite-(Y), oppach, REE-minerals, water-rich melt inclusions, fluid inclusions sulfate- and carbonate-rich system, Be-determination
Research Division:Earth Sciences
Research Group:Geochemistry
Research Field:Inorganic Geochemistry
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Earth Sciences
Author:Davidson, P (Dr Paul Davidson)
ID Code:122752
Year Published:2017
Deposited By:CODES ARC
Deposited On:2017-11-27
Last Modified:2017-11-27
Downloads:0

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