Rheniite is the only known mineral with Rhenium as its primary metallic constituent and as such is a fascinating species. It occurs at a volcanic vent in this remote area of Russia, and scientists have to climb down into hot crevasses to find the stuff. That being said, it is usually pretty ugly and massive material in terms of specimen appeal on the macro level. THIS piece, brought to my attention by my friend Dmitriy Belakovskiy of the Fersman Museum, has rheniite draped liberally on one side of the specimen and actual hardened rock made from the bubbly lava on the other! This shows the origins of the material so well, compared to most rather chunky specimens. Even aside from the lava, it is a really rich specimen with LOTS of bright microcrystalline rheniite. 8.9 x 7.8 x 7.7 cm
Askrifans: Rob Lavinsky, iRocks.com – CC-BY-SA-3.0
Yma'n gwir dhywgh:
a ranna – a dhasskrifa, lesranna ha treuskorra an ober
a gemyska – a aswiwa an ober
Yn-dann an ragselyow a syw:
askrifans – Res yw dhywgh ri askrifans gwiw, provia kevren dhe'n lecyans, ha meneges mar peu chanjyow gwrys. Hwi a yll gul hemma yn fordh resonus a vynnowgh, mes ny yllir y wul yn fordh a broffo synser an lecyans dh'agas skoodhya po agas devnydh.
ranna kehaval – Mar kwrewgh hwi chanjya, treusfurvya po drehevel war an ober ma, res yw dhywgh lesranna agas kevrohow yn-dann an keth lecyans hag an derowel, po lecyans kesplegadow.
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An restren ma a's teves kedhlow keworransel, dres lycklod keworrys dhyworth an kamera bysyel po an skanyer devnydhys rag hy gwruthyl po hy bysya. Mars yw chanjys an restren dhyworth hy studh gwredhek, possybyl yw na veu nebes manylyon nowedhys.