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re: Now Closed: I'll answer any question you have about ROCKS!
Posted on 7/10/14 at 3:35 pm to Champagne
Posted on 7/10/14 at 3:35 pm to Champagne
quote:
Why is Feldspar always mixed with other stuff in a granite composition?
Why can't I find just plain FELDSPAR??
I especially like the pink kind -- and I may or may not be talking about rocks.
It can be just feldspar if you break off a piece from a huge feldspar crystal
The real reason is this:
Potassium feldspar is what makes granite all pink because it's the main mineral in granite.
Posted on 7/10/14 at 3:37 pm to Pectus
Last question...I've got a big chunk of pegmatite on my desk. It has very distinct portions of quartz, mica and rosy granite. Where is the most likely place in the US that it came from?
Posted on 7/10/14 at 4:23 pm to Pectus
Do you know anything about Spectrus granite? Or is that just a "lame name"?
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