Volume 6, Issue 2 (10-1998)                   www.ijcm.ir 1998, 6(2): 107-122 | Back to browse issues page

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Genesis of the Jalal Abad Iron Ore neposit. www.ijcm.ir. 1998; 6 (2) :107-122
URL: http://ijcm.ir/article-1-879-en.html
Abstract:   (2684 Views)

The Jalal Abad iron ore deposit is one of the seven
most important iron ore deposilS in the central Iran. with a
probable are reserve of 200.4 million tons of iron ore in which
the average grades are estimated as 44.28% Fe, 0.83% Sand
0.07%P. In the Jalal Abad deposit two types of orebodies are
identified: the orebodies which are concordant with respect to
the sedimentarY most rocks (Jalal Abad I). and the orebodies
which are discordant with respect to their carbonate host. rocks
(Jalal Abad II). In this deposit the primary ore minerals are
magnetile and hematite. Hematite is also formed from the
oxidation of magnetite. It is proposed that the deposit was
rormed in two stages as describled below.
1) The principal orebodies were 'formed contemporaneous with
the sedimentation. from the exbalites and precipitates associated
with volcanic activity within an intracontinental sources. This
pan of the deposit is named Jalal Abad l.
2) After formation of the Jalal Abad orebodies. due to
emplacement or the igneous rocks within the ore zone, the
meteoric and/or connate water contained in the Jalal Abad J:
then iron was redeposited from the upwelling iron bearing
solution as replace,m ent orebo<1ies within the carbonate rocks. 1n
this manner JalaJ Abad II orebodies were formed.

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