Iyiphi imfihlo ekhona ngalezi zinsalela ezilondolozwe ngokumangalisayo ezinokukhanya “kwegolide”?
Ucwaningo lwakamuva luthole ukuthi izinsalela eziningi ze-Posidonia shale yaseJalimane azikutholi ukukhanya kwazo ku-pyrite, ngokuvamile eyaziwa ngokuthi igolide le- fool, okwakucatshangwa isikhathi eside ukuthi liwumthombo wokukhanya. Kunalokho, umbala osagolide usuka enhlanganisweni yamaminerali ebonisa izimo lapho izinsalela ezakheka khona.