User talk:128.196.236.84

My apologies
Hi, I initially reverted your edits to Biotite, but on further investigation you were on the right track. I'm trying to update the article to reflect what I've found in sources, but they are somewhat contradictory. I've removed reference to a "dark mica series" as that seems to have been a wikipedia invention. However, the literature doesn't do a good job on saying what the Biotite minerals should be called. I've gone with "Biotite group" as that seems to be the most commonly used, compared to either "Biotite series" or "Biotite sub-group". Looking at recent journal articles, it's clear that many geologists (as opposed to mineralogists) are still using "Biotite" to decribe the most commonly found member of the group as if it was a valid mineral species and I think that we should reflect that somehow in the text. Anyway, my apologies for reverting quickly without further investigation. Mikenorton (talk) 10:58, 29 August 2019 (UTC)