Talk:Mafic

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Biotite

Why is it listed as Mafic and Felsic? Pliny 21:57, 1 August 2006 (UTC)[reply]

Biotite and hornblende (amphibole) are both Mg and Fe bearing minerals. However, they both often occur as accessory phases in granitic (felsic) rocks. I suppose that is why they are listed in both. Biotite is not however, a typical mineral phase in most mafic rocks and probably shouldn't be listed there. Confused yet :-) Vsmith 00:54, 2 August 2006 (UTC)[reply]

perhaps you could do an edit and introduce some clarity for beginnners..Pliny 08:54, 2 August 2006 (UTC)[reply]

What is the table?

I'm a bit confused by the table. Is that supposed to be all the varieties of mafic rock, or a list of all the textures of mafic rocks with an example rock for each? If it is suppose to be comprehensive, why aren't amphibolite, hornblende, or biotite (mentioned above) in the list? The article could use some a reference, as well. I know very little about this topic, so I'd rather not try to modify it myself. Agyle 04:07, 19 July 2007 (UTC)[reply]

Pronounciation

is it may-fik or mah-fik? OsamaBinLogin (talk) 19:45, 14 July 2009 (UTC)[reply]

"Rock Spectrum"

This sentence from the article needs clarification: "Chemically, mafic rocks are on the other side of the rock spectrum from the felsic rocks." As a layperson, I have no idea what "the rock spectrum" is. The article for Felsic makes a similar claim, referring to "the elemental spectrum," a term I find equally baffling. --Super Aardvark (talk) 21:27, 1 December 2017 (UTC)[reply]