Need help identifying rock and minerals inside?

[egarceau]

Hello again! I know I recently posted and truly appreciate the feedback as I am so limited in my knowledge of rocks and minerals (just enthusiastic about them!) I cracked this rock open out of curiosity some time last summer and have been trying to pinpoint what type of rock it is and the minerals found inside. I'm thinking mica of some sort? Anything helps! Thanks again!

 

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[Moesia]

When you take a picture of a rock like that try to brake it where the water has not had the opportunity to erode and change the composition of the rock. Do not just brake them where there is an existing crack. If you want to keep them on a shelf intact then ok. The closest thing that you're rock resembles judging by the pictures is a peace of pegmatite. Plenty of interesting minerals are associated with them.

Good luck.

 

[DDancer]

Hehh Break it how you want to. The pictures are not to bad at all just need to get closer for some of them at times. It is generally very difficult to take a crack at guessing what a stone is without knowing where it came from, its harness and density as well as fracture patterns and any faceting or cleavage views *usually have to have a close up of the last three*. You appear to be enthusiastic thats great. I suggest you pick up some rock and mineral guides to study as they will help you immensely in identifying the materials your collecting. Also consult your local or state mine and geology departments sites to become familiar with the minerals common for your area and others you visit.
As to what your showing Moesia's observation is correct, the pictures are all pegmatites. Feldspar is apparent and the black material could either be tourmaline or mica's. Pegmatites have a mix of various minerals so picking thru them can be rewarding. Check out the thread Digging into Pegmatite, wilfndgold1 has a pretty good read on pegmatite's being dug there.

 

[Eu_citzen]

I agree on the pegmatite.

 

[egarceau]

Thank you! I will certainly take any advice I can get as I am very new to this and just picked it up as a hobby over the summer (Although I have always loved and collected rocks just without doing much research!) It's got to be a pegmatite which is pretty neat! I will certainly try and contact any local mine/geology departments to get additional information and looks like it's time to get some books! Thanks again!

 

[Eu_citzen]

"prospecting for gemstones & Minerals" by John sinkankas is a pretty darn good book for any newbie.

 

[egarceau]

Awesome thanks!

 

[Geochem]

Hello again! I know I recently posted and truly appreciate the feedback as I am so limited in my knowledge of rocks and minerals (just enthusiastic about them!) I cracked this rock open out of curiosity some time last summer and have been trying to pinpoint what type of rock it is and the minerals found inside. I'm thinking mica of some sort? Anything helps! Thanks again!
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I m'm with the consensus: it is highly weathered pegmatite granite.

 

[egarceau]

Yes! That rock mimics mine almost exactly! Thank you! Trying to narrow down the minerals inside (based on pegmatite granite and minerals known in my area!) Truly appreciate all the help this site is wonderful!