ID Help?

[TheRockCollector]

Hey guys,
I found this rock thinking it was red granite but when I wash it It dosent nearly look like red granite. Any idea? One thing I know is that it has quartz in it. There are alot of flat and smooth surfaces and has stacks.
http://i1194.photobucket.com/albums/aa374/TheRockCollector/9e8ec43e.jpg
Thanks

 

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[TheRockCollector]

Anyone know what it is?
And here's another picture:
http://i1194.photobucket.com/albums/...r/cc7bd931.jpg​

 

[Eu_citzen]

First picture looks like K Feldspar with quartz, second picture looks different.. Quartz with some kind of xenocryst?

Does the red stuff have cleavage? Any Mica in place?

If yes to having cleavage and mica - probably granite.
If the mineral grains are say approx 1 cm it may be classified as pegmatite.
(Rule of thumb - if as large or larger then thumb nail; pegmatite)

 

[TheRockCollector]

First picture looks like K Feldspar with quartz, second picture looks different.. Quartz with some kind of xenocryst?

Does the red stuff have cleavage? Any Mica in place?

If yes to having cleavage and mica - probably granite.
If the mineral grains are say approx 1 cm it may be classified as pegmatite.
(Rule of thumb - if as large or larger then thumb nail; pegmatite)

Hey Eu,
It does have cleavage and their is no mica in place, is their a difference between K-Feldspar and just Feldspar and what are you talking about the grains do you mean the quartz?
Thanks,
TheRockCollector

 

[Eu_citzen]

K Feldspar is a general name used for feldspars reddish in colour. Feldspar is actually a group of minerals.

The mineral grains, in lack of a better word. Do you have a granite or something similar? Check it out.
You'll notice under magnification there are different minerals in there, they often occur as small bits packed together in that rock.

Do you have a picture not so close up?
Could be related to a pegmatite in some way or an altered granite I'd guess from the pictures.
I'm looking for a quartz vein that crosses trough the rock or some kind of sign of alteration.

But, just to be sure, one more thing; can a knife scratch it?

 

[TheRockCollector]

K Feldspar is a general name used for feldspars reddish in colour. Feldspar is actually a group of minerals.

The mineral grains, in lack of a better word. Do you have a granite or something similar? Check it out.
You'll notice under magnification there are different minerals in there, they often occur as small bits packed together in that rock.

Do you have a picture not so close up?
Could be related to a pegmatite in some way or an altered granite I'd guess from the pictures.
I'm looking for a quartz vein that crosses trough the rock or some kind of sign of alteration.

But, just to be sure, one more thing; can a knife scratch it?

Ok so I did a scratch test and the knife cannot scratch it. And here are some pics farther away:
http://i1194.photobucket.com/albums/aa374/TheRockCollector/55010efd.jpg
http://i1194.photobucket.com/albums/aa374/TheRockCollector/3eff5f3c.jpg
http://i1194.photobucket.com/albums/aa374/TheRockCollector/06834485.jpg
http://i1194.photobucket.com/albums/aa374/TheRockCollector/f7a34c52.jpg
Thanks

 

[Eu_citzen]

That makes it likely to be K feldspar. A rock consisting of K feldspar and quartz..
It had me scratching my head there for a moment, LOL!

Quartz syenite could be a hit, what do you think?

 

[TheRockCollector]

That makes it likely to be K feldspar. A rock consisting of K feldspar and quartz..
It had me scratching my head there for a moment, LOL!

Quartz syenite could be a hit, what do you think?

Ya, I agree on the K-Feldspar. I'm not to sure of the quartz syenite.
Thanks
Another successful ID by Eu!

 

[Eu_citzen]

Not sure on the quartz syenite? Looks like a volcanic rock there to me.
Rocks consist of one or more minerals; granite, basalt, diorite etc are examples.

Example of quartz syenite, seems to fit the bill:
Rock365 : 20 11 2010 : Nordmarkite | Flickr - Photo Sharing!

 

[TheRockCollector]

Not sure on the quartz syenite? Looks like a volcanic rock there to me.
Rocks consist of one or more minerals; granite, basalt, diorite etc are examples.

Example of quartz syenite, seems to fit the bill:
Rock365 : 20 11 2010 : Nordmarkite | Flickr - Photo Sharing!

Can quartz syenite be found in southern Ontario?

 

[Eu_citzen]

I don't know, I'm on the other side of the big pond after all, lol.
Glaciers might also have brought it in etc..??

 

[TheRockCollector]

I don't know, I'm on the other side of the big pond after all, lol.
Glaciers might also have brought it in etc..??

Oh yeah true. Ok thanks for the ID!