fmg confirms detrital....

Taken from today's (23rd March 2011) FMG ann near DMA's massive holding...

"Members of the Brockman Iron Formation, to the Newman, Mt MacLeod and Nammuldi members of the Marra Mamba Iron Formation. Both the Brockman and Marra Mamba iron formations are known to host large tonnages of Iron ore deposits elsewhere in the Hamersley ranges. Mineralisation on the outcropping or buried extents of these Bedded Iron Deposits (BID) is the primary focus for ore deposits in the Western Hub, however outcropping and drilled mineralised intercepts of Channel Iron Deposit (CID) and Detrital Iron Deposits (DID) have also been recognised throughout this region, and will add to the total resource base.
Exploration operations by Fortescue within the Western Hub has focussed on exploring the outcropping mineralised areas plus interpreted extensions (predominantly BID), and the valley systems (CID and DID). This has resulted in the discovery of large tonnages of all of these three classic Hamersley Province Iron deposit types (DID, CID and BID). In certain areas the DID's will overly a thick sequence of CID material which in turn may be underlain by BID material."

"The material overlying the CID material is of younger age and has also been eroded from iron rich material. This clastic material is concentrated into horizons of elevated iron grade termed Detrital Iron Deposit (or DID), which forms part of the sequence of overlying later Tertiary aged alluvials."

E.