Mineral chemistry of gahnite from the Lalor metamorphosed VHMS deposit, Snow Lake, Manitoba

Autor:	Douglas K. Tinkham, Elliot A. Wehrle, Andrew M. McDonald
Rok vydání:	2020
Předmět:	010504 meteorology & atmospheric sciences Geochemistry and Petrology Geochemistry Mineral chemistry 010502 geochemistry & geophysics Snow 01 natural sciences Geology 0105 earth and related environmental sciences
Zdroj:	The Canadian Mineralogist. 58:511-532
ISSN:	1499-1276 0008-4476
Popis:	Gahnite (ZnAl2O4) is a common accessory mineral at the Lalor auriferous Zn-Cu metamorphosed VHMS deposit (Snow Lake, Manitoba). To evaluate factors influencing its crystal chemistry, gahnite representing a range of textures, host mineral assemblages, and whole-rock compositions were analyzed for major, minor, and trace elements. The analyzed grains span the range of Ghn63-75Her15-22Spl10-18 and are un-zoned with respect to Zn, Fe, and Mg. A moderate positive correlation exists between Mg in gahnite and whole-rock MgO (R2 = 0.66). The minor- and trace-element chemistry of the Lalor gahnite is dominated by Mn (400–2600 ppm), Si (
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::46447a1eb3bc28b23e2ec890c740169b https://doi.org/10.3749/canmin.1900036 Zobrazit plný text záznamu