Assertion: azurite's claim | /r/Desires | low copper concentration
Facets:
value: for its formation
type: PURPOSE
value: very
type: DEGREE
Source sentences:
text: The claim that azurite could be easily synthesized from copper sulphate and sodium carbonate is doubtful since according to http://cool.conservation-us.org/jaic/articles/jaic44-02-004_5.html azurite requires high CO2 pressure and very low copper concentration for its formation.