banded iron formation


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banded iron formation

[¦band·əd ′ī·ərn fȯr‚mā·shən]
(geology)
A sedimentary mineral deposit consisting of alternate silica-rich (chert or quartz) and iron-rich layers formed 2.5-3.5 billion years ago; the major source of iron ore.
References in periodicals archive ?
Over 70km of magnetics which correlate to banded iron formations grading at approximately 40% Fe.
The Banded Iron Formation ("BIF") is known to occur immediately southwest of high grade quartz veining documented on the contiguous main Aquilon Property to the north where Golden Tag is earning a 60% interest from SOQUEM and SIRIOS.
Stage I RC drilling programme completed during 2010 demonstrated significant intersections of magnetite gneiss / banded iron formation (BIF) within the Achaean Mulgathing Complex, northwest Gawler Craton.
Gold mineralization at Vila Nova is associated with carbonate altered, sheared and folded banded iron formation ("BIF") within a sequence of clastic sediments, mafic volcanic and ultramafic rock.
1km banded iron formation, which is coincident with a strong linear
Another important aspect of this drill will be metallurgical testing of core samples from the magnetite Banded Iron Formation (BIF) at Telecom Hill West.
The program is also designed to test new targets in the favourable banded iron formation unit approximately 200 m north of the Horseshoe zone.
In addition, the drilling to date has confirmed the presence of fresh magnetite banded iron formation ("BIF") beneath the oxide cap.
This test work will be followed by ground gravity surveys targeting zones of reduced magnetic response on interpreted banded iron formation horizons which may reflect the presence of hematite-goethite alteration.
On the eastern portion of the property, mapping coupled with ground magnetics identified multiple, previously unmapped units of Banded Iron Formation (BIF) with widths ranging from to over 30 meters.
Some of these target areas comprise elevated laterite-covered banded iron formation (BIF) considered to have potential for thicker hematite-goethite mineralisation.
It was drilled to a depth of 597 feet in a banded iron formation and was visibly well mineralized down to a depth of some 436 feet.