The paper is on the new mineral species piilonenite-(Nd), a new Nd-dominate carbonate with no closely related minerals or synthetic compounds from Mont Saint-Hillarie, Canada.

For decades, gemologists have struggled to detect heat-treated sapphire. High-technology instruments like Fourier-transform infrared (FTIR) spectrometers are costly. As a result, luminescence under shortwave ultraviolet (SWUV) light and longwave ultraviolet (LWUV) light provides a cheaper and more practical technique for identifying heat-treated sapphire. This work highlights that blue luminescence under SWUV light could indicate heated sapphire, whereas purplish-red may also be helpful.

We described two new minerals, igelströmite and manganoschafarzikite, from the Långban manganese–iron deposit in Värmland, Sweden. The chemical formulae are Fe³⁺(Sb³⁺Pb²⁺)O₄ and  Mn²⁺Sb³⁺₂O₄, respectively. They belong to a new mineral group, where all members have the same crystal structure. It is called the minium group, after the lead-oxide mineral that is the oldest known substance of this kind.

The first lanthanum-dominant mckelveyite group mineral, alicewilsonite-(YLa), Na₂Sr₂YLa(CO₃)₆∙3H₂O, was found at the Paratoo copper mine, South Australia, Australia.

The new mckelveyite group mineral bainbridgeite-(YCe) was found at Mont Saint-Hilaire, Quebec, Canada.