u/DinoRipper24

Associated minerals on the specimen are ultra-rare Barahonaite-(Al), Barahonaite-(Fe), arsenocrandallite, yukonite, natropharmacosiderite, cornwallite and olivenite.

Associated minerals on the specimen are conichalcite, heterogenite, calcite, quartz, chalcopyrite and chalcocite.

The matrix is quartz, actinolite and aragonite. The whole specimen measures: 0.7 mm x 0.1 mm x 0.5 mm, so the crystal is extremely tiny! Putnisite crystals are all extremely tiny. This very rare mineral is only found in two localities in Western Australia, about 100 km apart, and very few specimens exist!

Portage-du-Fort had a very small and limited reported occurrence of serendibite, where it occurred in a boron-rich calc-silicate rock matrix due to high-grade metamorphism, the largest serendibite-bearing zone only being about 15 cm wide as per reports.

The putnisite is the deep purple orthorhombic crystal circled in red. The whole specimen measures only 0.7 mm x 0.1 mm x 0.5 mm, which just shows how small the putnisite crystal itself is! The fun fact is that putnisite doesn't really grow much bigger than this. It's (as of 2026) only found in two localities in Western Australia, both roughly 100 km apart, and nowhere else in the world.