Rocks from the creek

[Michael71]

Could anyone help me identify these 2 rocks? I picked them up in the creek behind my house here in central NY.

The first one I liked for its straight shear lines, the 2nd one I picked up because of the 2 colors intertwined.

Thank you in advance.

 

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[huntsman53]

Well the rock in the bottom pics is Quartz in what appears to be Granite. Although some pics that are not so close up will help with a better determination of the rock in the top pics but it appears to be Flint in Limestone.


Frank