Geophysical survey for Podiform chromitite

Hello Everybody,
I 'd like to know that what geophysical survey shall be used for exploration of highly fractured and tectonized podiform type of Chromitite.

FYI, Gravimetery gives fluctuations and results in unobtainable ore bodies means after [Core] drilling at the same plotted points of prodiform chromitite mentioned by gravimetery. Actually, nothing of chromitite exists after drilling on the same mentioned plotted points.

So what should be the useful geophysical survey used instead?

Thank you,