white spots in exposed aggregate

[Jerome W. Young]

saw 8 -10 spots on the surface of the aggregate surface. it was hard and raised and white like a calcium buildup. Is this a chemical inbalance problem or a problem with the marcite? or nothing? how do you fix it it. is it an acid wash?
Thanks!

[Billy Stephens]

saw 8 -10 spots on the surface of the aggregate surface. it was hard and raised and white like a calcium buildup. Is this a chemical inbalance problem or a problem with the marcite? or nothing? how do you fix it it. is it an acid wash?
Thanks!
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Got Pictures?
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[Jerry Peck]

it was hard and raised and white like a calcium buildup. Is this a chemical inbalance problem

Probably is and probably is.