Iron ore that occurs in igneous intrusion is largely of the form A) siderite B)

Question

Iron ore that occurs in igneous intrusion is largely of the form A) siderite B) lepidocrocite C) hematite D) magnetite E) goethite Algoma type deposits comprise iron oxides and silica precipitated from A) evaporates B) sedimentary deposits carried by water C) hot springs related to submarine volcanism D) hydrothermal activity in orogenic belts Bauxites form from A) weathering of any rocks with aluminum B) only from weathering of mafic rocks C) weathering of extrusive rocks D) weathering of aluminum rich Felsic rocks

Explanation / Answer

1.Q....Iron ore that occurs in igneous intrusion is largely of the form

Ans...Magnitite

2.Q...algoma type deposits comprise iron oxides and silica precipitated from

Ans...(D)..hydrothermal activity in organic belts.

3.Q...Bauxites form from

Ans..(D) Weathering of aluminium rich felsic rocks.

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