Talk:Calcium carbonate

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Could some information on the chemical qualities of calcium carbonate be present here instead of as a link to other pages?

Could someone put the 3D structure and 2D structure of CaCO3 on the page so as to show the proper bonding.

Who is Dr Simmons? Thes entinel 03:28, 16 April 2006 (UTC)

There are references on the Internet to research by someone named Simmons using CaCO₃ to raise the pH of a natural water resource. So I don't think that's vandalism. It's just written really badly.

On the other hand, the information that the mamalian eye lens is made from CaCO₃ just seems wrong. TheGoblin 20:11, 9 May 2006 (UTC)

[edit] Solubility of calcium carbonate in water

The section on water-solubility has some readability issues. Indeed if I didn't already know the chemistry of what is going on in the water/CaCO₃/dissolved CO₂ equilibrium, I'm not sure I'd be able to follow the development in this section. That the section has lots of equations is good, but they are in sore need of more surrounding text that explains what the equations mean. My apologies to the original author of this section if my criticism seems overly harsh. If that author wishes to discuss this with me, please do so on my user-talk page. Within the next few days I will undertake to improve this section. Stay tuned. Karlhahn 17:33, 4 October 2006 (UTC)

I have published the rewrite, and I hope that I have to some degree achieved the goal I stated above. The old version is will be preserved for a while at User:Karlhahn/KarlsSandbox. Please post any comments or criticism you might have of the changes I've made at my user talk page. Karlhahn 03:48, 11 October 2006 (UTC)

A great help, thanks for this, I'd noticed this needed clarification. I plan to completely revamp this article next year - there's so much more to say on this topic. Thanks, Walkerma 04:15, 11 October 2006 (UTC)

[edit] Use of ⇋ versus ↔

I usually use FireFox, and I just noticed that under IE, the ⇋ [double horizontal arrow; symbol for reversible reaction, in FireFox shows as left arrow over right arrow] character doesn't render correctly. Anyone else notice this? I think I'm going to have to replace usage of ⇋ in this article with ↔.

using the {{unicode}} template fixes the problem on some (but not all) versions of IE. Physchim62 (talk) 14:56, 19 October 2006 (UTC)

You're right. I think the newer IE versions can read the Unicode version just fine. We may need to tell one of the bots to stop converting Unicode! I'd rather we didn't go back to the resonance arrow, my students have such a hard time understanding the difference between reversible reactions and resonance as it is without Wikipedia exacerbating the problem! Walkerma 21:14, 19 October 2006 (UTC)

I just substituted the unicode template for the equilibrium arrow, and it works just fine under IE 6. Karl Hahn (T) (C) 18:33, 26 January 2007 (UTC)

Question

Say someone found a large bag of white powder in a forest with "CALCIUM CARBONATE" written on it what should I would they do with it and what do you think it would be there for...? lol