MCQ
The silicate anion in the mineral kinoite is a chain of three $SiO_4$ tetrahedra that share corners with adjacent tetrahedra. The mineral also contains $Ca^{2+}$ ions, $Cu^{2+}$ ions, and water molecules in a $1 : 1 : 1$ ratio mineral is represented as:
- A$CaCuSi_3O_{10} · H_2O$
- B$CaCuSi_3O_{10} · 2H_2O$
- ✓$Ca_2Cu_2Si_3O_{10} · 2H_2O$
- Dnone of these


