Thread: I Found It Over There

Could be so, i thrust your statement as i am no geologist and i know that you know what you do :-) conglomerate was just the term i used as its a mixed up stone....

Thats from a geologist site:

Its a type of plutonic Diorite also called Felsenmeer Diorite or on geologists term Diorit-Gabbro Family...Quartz is mostly missing <5% and the ones having more Quartz are called Quartz Diorites...here these stones can also be reddish....

Originally Posted by thebigspendur

No such thing as metamorphosed Quartzite. Quartzite is metamorphosed sandstone so it's just Quartzite.

Just checked my geology book. You are correct.

The book does say the rock is quartzite though and not quartz. Coal Creek Quartzite is the formation it is from.

Originally Posted by doorsch

Could be so, i thrust your statement as i am no geologist and i know that you know what you do :-) conglomerate was just the term i used as its a mixed up stone....

Thats from a geologist site:

Its a type of plutonic Diorite also called Felsenmeer Diorite or on geologists term Diorit-Gabbro Family...Quartz is mostly missing <5% and the ones having more Quartz are called Quartz Diorites...here these stones can also be reddish....

Diorite encompasses a very large group depending on the minerals it contains. Usually it has a somewhat speckled appearance but not always. As certain minerals increase or decrease the rocks grade into a different variety. The Quartz Diorite is one of those varieties when the Quartz content increases.

The morphology of Quartzite is initially the stuff is Sandstone which is derived from Quartz which often times comes from Granite which is weathered leaving the Quartz as the last component and then through the sedimentary process the sand grains are glued together and then the rock is subjected to metamorphism forming the Quartzite. It's a great example of one rock that has undergone all three processes.

The picture is Purple Quartzite which comes from the Devils Lake Area of Wisconsin.

Originally Posted by DennisBarberShop

Made a stop and grabbed some rocks yesterday on the way home from a cut out in the roadside...a blueish green stone, loose stuff around it but has some bigger layers in there.
Attachment 170996

Here's an example of the slate from that out cropping

Oops on the double pic....its very greenish colored....and fine...seems promising

Also seems a bit harder than the black slate I have worked with in the past and has thicker layers

sounds an awful lot like someone needs to lap that and try it!

Im gonna take it to the tile saw in a few, just had dinner, forgot I had it in the Jeep lol

Posting pics as I go. Cross section cut. Grey and green hues in there....slurry from diamond saw is very much like a thuri as u can see when it is dried on the stone.

freshly slabbed...covered in slurry....I need a blade about another half inch cut width...