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it depends what type of rock you have really, if you have a rock with crystals in it wont have sand in, if you have a pourous rock it wont have sand in either, but if you have a rock with grains you may find sand in the rock! Answered by a 12 year old lolz

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Pretty much right - well done! You do have certain types of rocks ('sedimentary rocks') with sand in them, formed from earlier deposits of sand; but the sand itself is grains of hard minerals remaining from harder rocks that have been eroded away. So the rock with crystals does not have sand in it, but when weathering breaks that rock down, the crystals are left as grains of sand.

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7y ago

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