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What îs this rock?


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I Have a 300kg rock , this îs a chunk i managed țo break with a Hammer. I did the Quartz test and IT leaves marks on glass, and i tried to stain IT and when i put IT under Water IT all goes away. 

 

Do You think this îs Quartz ? If yes ? How valuble îs 300kg in one big stone.

IMG-20220701-163547-608.jpg

Thanks

IMG-20220701-163559-729.jpg

 

 

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Put a few drops of warm vinegar on it. If it starts slowly fizzing after a few minutes, it calcite. If it doesn't fizz, it's most likely quartz.

 

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3 minutes ago, Morlock said:

Put a few drops of warm vinegar on it. If it starts slowly fizzing after a few minutes, it calcite. If it doesn't fizz, it's most likely quartz.

 

I did, and IT doesnt. Ok so its Quartz but , 300kg of Quartz îs worthless? Thanks for the quick reply. 

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There's not going to be much of a market for a 600 + lb mass of quartz. It might make a good landscape stone for the yard if you can find the right buyer.

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