It has been suggested that within green dipotase there the magnetism is dominated by quantum flucuations but evidence for this is not definitive. This means that in this naturally occuring mineral there is still debate regarding the magnetism at low temepratures, is it well ordered or are there dominent flucutations that disturb this order. This material is made up of Cu(II) chains that are antiferromagnetically coupled and the interaction between these chains are ferromagnetic, each Cu(II) ions also only has 3 nearest neighbours, which is a small coordination number. Muon spectroscopy may help provide answers as to what's going on, especially given that the muon is both a local and bulk probe that is extremely sensitive to magentic flucutations.