Copper is mildly toxic to humans in large quantities. It's significantly more toxic to marine organisms and quite toxic to many plants.
Other than that, copper carbonate isn't especialliy "dangerous".
Copper is poisonous because the chemicals inside copper react with other chemicals such as water and eventually rust causing the covers to be removed during the process.
copper(II) carbonate or cupric carbonate
Potassium Carbonate and Copper metal
By filtration, as Copper(II) carbonate is insoluble
They form magnesium oxide, copper oxide etc. and will form carbon dioxide as a byproduct.
Here are the equations for the thermal decomposition of copper carbonate (notice that a metal oxide is formed, just as it was with calcium carbonate): Copper carbonate → copper oxide + carbon dioxide CuCO3 → CuO + CO2
Copper Carbonate.
copper(II) carbonate or cupric carbonate
Copper and carbonate ions form copper carbonate. In practice, copper carbonate usually contains hydroxide ions as well.
Potassium Carbonate and Copper metal
The copper(III) carbonate is a precipitate.
copper (II) carbonate is a solid
Copper carbonate would precipitate if you combined solutions of copper (II) chloride and sodium carbonate.
Copper(II) Carbonate (or Cupric Carbonate) is made up of Copper ions, and Carbonate ions. The coppers have a +2 charge, and carbonate has a -2 charge. The formula is Cu(II)CO3
The chemical formula of copper carbonate is considered to be Cu(OH)2CO3.
Copper sulfate reacts with sodium carbonate to produce sodium sulfate and copper carbonate. (CuSO4 + Na2CO3 --> Na2SO4 + CuCO3) Copper carbonate is bluish green in color.
Calcium carbonate is not dangerous for the environment !
Because it undergoes thermal decomposition. If you give heat to Copper (II) carbonate, it will decompose to form Copper (II) oxide. Instead of saying green copper carbonate, I guess it is safer and better to say copper (II) carbonate.