Re: CaCO3 to CaSO4

Well, I suppose I should explain a bit farther. I am working on a
project which involves the manufature of chalk from deposits of calcite
(CaCO3). Calcite will work as chalk, however on most blackboards it
will simply scratch the surface. Modern chalk is generally made out of
gypsum, so it is much softer.

.

Relevant Pages

  • Re: CaCO3 to CaSO4
    ... >> project which involves the manufature of chalk from deposits of calcite ... Calcite will work as chalk, ... Maybe someone would pay to take waste H2SO4 off their hands. ...
    (sci.chem)
  • Re: CaCO3 to CaSO4
    ... I suppose I should explain a bit farther. ... > project which involves the manufature of chalk from deposits of calcite ... Calcite will work as chalk, ...
    (sci.chem)
  • Re: Behe vs. Miller, a True Acid Test
    ... squeeze geology into what we see happening now ... that's a lot of chalk. ... having the deposits brought in by successive wave action? ... accumulating pure chalk rapidly enough. ...
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