- IMA Mineral Symbol
- Cgh
- chemical formula
- Cu₂Mg₂(CO₃)(OH)₆ * 2H₂O
- Commons category
- Callaghanite
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 5.DA.25
- Nickel-Strunz 9th edition (updated 2009)
- 5.DA.25
- Strunz 8th edition (series ID, updated)
- Vb/D.01 – Anhang