Pb-Pb and U-Pb dating of cassiterite by in situ LA-ICPMS: Examples spanning ~1.85 Ga to ~100 Ma in Russia and implications for dating Proterozoic to Phanerozoic tin deposits.

Leonid A. Neymark; Anatoly M. Larin; Richard J. Moscati

doi:10.3390/min11111166

Pb-Pb and U-Pb dating of cassiterite by in situ LA-ICPMS: Examples spanning ~1.85 Ga to ~100 Ma in Russia and implications for dating Proterozoic to Phanerozoic tin deposits.

Minerals

By: Leonid A. Neymark, Anatoly M. Larin, and Richard J. Moscati

https://doi.org/10.3390/min11111166

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Abstract

This paper investigates applicability of cassiterite to dating ore deposits in a wide age range. We report in situ LA-ICPMS U-Pb and Pb-Pb dating results (n = 15) of cassiterite from six ore deposits in Russia ranging in age from ~1.85 Ga to 93 Ma. The two oldest deposits dated at ~1.83–1.86 Ga are rare metal Vishnyakovskoe located in the East Sayan pegmatite belt and tin deposits within the Tuyukan ore region in the Baikal folded region. Rare metal skarn deposits of Pitkäranta ore field in the Ladoga region, Fennoscandian Shield are dated at ~1.54 Ga. Cassiterite from the Mokhovoe porphyry tin deposit located in western Transbaikalia is 810 ± 20 Ma. The youngest cassiterite was dated from the deposits Valkumei (Russian North East, 108 ± 2 Ma) and Merek (Russian Far East, 93 ± 2 Ma). Three methods of age calculations, including ²⁰⁸Pb/²⁰⁶Pb-²⁰⁷Pb/²⁰⁶Pb inverse isochron age, Tera-Wasserburg Concordia lower intercept age, and ²⁰⁷Pb-corrected ²⁰⁶Pb*/²³⁸U age were used and the comparison of the results is discussed. In all cases, the dated cassiterite from the ore deposits agreed, within error, with the established period of magmatism of the associated granitic rock

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Additional publication details
Publication type	Article
Publication Subtype	Journal Article
Title	Pb-Pb and U-Pb dating of cassiterite by in situ LA-ICPMS: Examples spanning ~1.85 Ga to ~100 Ma in Russia and implications for dating Proterozoic to Phanerozoic tin deposits.
Series title	Minerals
DOI	10.3390/min11111166
Volume	11
Year Published	2021
Language	English
Publisher	MDPI
Contributing office(s)	Geology, Geophysics, and Geochemistry Science Center
Description	1166, 30 p.
Country	Russia
Other Geospatial	Chuya-Kodar complex, East Sayan belt, Merek Greisen tin ore deposit, Mokhovoe Porphyry tin deposit, Pitkaranta Mining District, Valkumei silicate-sulfide vein tin deposit
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