1) Lead mineral 2) Orthorhombic mineral
Found on
https://www.crosswordclues.com/clue/seeligerite
Seeligerite is a rare complex lead chlorate iodate mineral with formula: Pb3Cl3(IO3)O. It is a yellow mineral crystallizing in the orthorhombic system. It has perfect to good cleavage in two directions and a quite high specific gravity of 6.83 due to the lead content. It is translucent to transparent with refractive indices of nα=2.120 nβ=2.320 ...
Found on
http://en.wikipedia.org/wiki/Seeligerite
No exact match found.
