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Re: Hardness, Calcium, Magnesium
I wrote:
>> Not quite. There is no such compound as Magnesium carbonate
>> (MgCO3).
Roger, David and others replied:
>MgCO3 is the mineral magnesite. It isn't especially common but it can
>be mined in large quantities. That still has nothing to do with the
>hardness calculation.
Well, I was taught to never say NEVER, so my bad...Maybe what I
should've said is that's it's not all that common and comes in many
hydrated, hydroxy configurations. After checking a few sources, I found all
kinds of combos, like the ones David listed, but pure MgCO3 is still kind of
rare.
Roger Miller
Jamie <"\\\>< Aquatic plants, water chemistry, and cichlids
Greenwood, SC http://www.ais-gwd.com/~jjirons