* Hecla withdraws proposed offering of senior notes and terminates concurrent tender offer

* Hecla Mining Co - In addition, concurrent tender offer to purchase any and all of its 6.875% senior notes due 2021 has also been terminated

* Hecla Mining Co says has decided not to proceed with its previously announced offer of $500 million of senior notes due 2025 Source text for Eikon: Further company coverage: