[fer-oh-mag-nee-zhuh n, -shuh n]
- (of minerals and rocks) containing iron and magnesium.
Origin of ferromagnesian
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Examples from the Web for ferromagnesian
Biotite and all ferromagnesian minerals rarely appear in them, and never are in considerable amount.
Hornblende and biotite are the ferromagnesian constituents and vary much in relative importance.Mount Rainier
- (of minerals such as biotite) containing a high proportion of iron and magnesium
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
- Containing iron and magnesium. Magnetite and hornblende are ferromagnesian minerals.
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