- Whitlockite with Arrojadite (KFe), Kulanite, Nahpoite and Quartz
- Big Fish River, Dawson Mining district, Yukon Territory, Canada
- Miniature, 4.5 x 3.0 x 1.5 cm
- Ex. Paulo Matioli
- $1,250.00 Payment Plan Available
Approved in 2008. A very good specimen with great associations from the type locality! A matrix piece with several colorless to white, translucent to transparent, well-formed crystals of bobdownsite to 1.5cm with excellent pearlescent luster. For added interest and contrast, there are lustrous, dark, teal blue, kulanite crystals as singles and 2.5mm lamellar clusters along with abundant, white aggregates of nahpoite to a few mm. Well-formed arrojadite (KFe) crystals to 1mm are also situated strategically on the piece. From the late 1990's. Ex. Paulo Matioli collection.
Per mindat.org: Described as a new mineral in 2008, as the F-dominant analogue of whitlockite.
Later, in 2018, it was discredited because it was showed that it does not contain F, which was its distinguishing characteristic as a new mineral.
F-free bobdownsite is equivalent to the mineral whitlockite, although the phase probably lies along the whitlockite-merrillite join (IMA-17E).