American Heritage® Dictionary of the English Language, Fourth Edition
- adj. Containing or relating to a group of dark-colored minerals, composed chiefly of magnesium and iron, that occur in igneous rocks.
- Blend of magnesium and ferric. (Wiktionary)
- ma(gnesium) + Latin f(errum), iron + -ic. (American Heritage® Dictionary of the English Language, Fourth Edition)
“The first type of vents occur throughout the world's mid-ocean ridges and are hosted by rocks that are rich in magnesium and iron -- called mafic rocks.”
“As we collect and analyze this data, we try to identify certain aspects as belonging to a class of minerals, such as clays, sulfate or mafic silicates.”
“Some small areas of mafic and ultramafic rocks also occur, producing more basic soils.”
“This subsection contains mainly Mesozoic granitic and mafic plutonic rocks, Jura-Triassic volcanic rocks, Pre-Cretaceous metamorphic rocks, and Eocene and Oligocene marine and nonmarine and Miocene marine sedimentary rocks.”
“On mafic plutonic rocks, they are mostly Mollic and Typic Haploxeralfs and Typic Rhodoxeralfs.”
“Best Sites for Diving and Snorkelling [UK Times] · Snorkeling coverage [Jaunted] [Photo: mafic]”
“The oceanic crust, which contains more mafic minerals is thinner and denser than the continental crust which contains minerals richer in silicon and aluminum.”
“The mantle is dominated by magnesium and iron-rich (mafic) minerals.”
“Some mafic and ultramafic rocks also occur here, producing more basic soils.”
“This is evidenced by a wide variety of mafic and ultramafic rocks.”
These user-created lists contain the word ‘mafic’.
Soil samples for stone soup.
Words that can be pronounced identically but are spelled differently. I've started with unusual or extensive sets. In some of these sets, no one speaker would pronounce them all the same. I've trie...
A roster of adjectives that infrequently surface in typical conversation and writing. Many are dredged from scientific or other technical jargon or sieved from examples of disused archaic forms.
(i'm a rock nerd, so what? :P)
Rocks, soil, and similar obscurity.
Looking for tweets for mafic.