🔎 UNIDENTIFIED What type rock is this?

[cmthunder]

Found this walking in Harford County Maryland. Silver white shiny crystals and black. Can someone help with ID?
Thanks cm

 

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[tamrock]

Schist maybe. Metamorphic I'm thinking, but often tough to label a rock with a specific name, which it might very well have one or not.

 

[Chr038]

Found this walking in Harford County Maryland. Silver white shiny crystals and black. Can someone help with ID?
Thanks cmView attachment 2091217

It could very well be granite and quartz. We find pieces like that all the time near culverts or a water source. When it stays in the mud and water with no sun light for a long period of time they tend to change and become clear.

 

[antmike915]

Maybe a type of quartz or quartzite.