Clear cyrstals in a rock

[heartsongs]

I found this rock the other day, thinking it is dolomite? it weighs about 4 or 5 pounds and it has lots of clear crystals in it. I was wondering if anyone here knows anything about it? I am looking for a value of it as well. Thank you in advance View attachment 1149871

 

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[heartsongs]

More pictures for size reference

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[Ponchosportal]

Crystals have hexagonal habit = quartz