Oct 13 (Reuters) - Pilbara Minerals Ltd PLS.AX :
* Says asx has requested that the company provide supplementary information on fe 203 content in the resource estimate
* Says pilgangoora asx resource estimate upgrade release reissued
* Says overall pilgangoora mineral resource now comprises 15.7 million pounds of contained tantalite
* Overall pilgangoora mineral resource comprises 668,000 tonnes of contained lithium oxide
* Source text for Eikon ID:nASX1lwwKy