Lollingite or löllingite 5.14 ct.

Lollingite or löllingite

is Iron arsenide with formula FeAs2 ,but it may contain nickel,cobalt and sulfur; the hardness is 5-5.5

Often mixed with very similar arsenopyrite ( FeAsS) ,therefore difficult to distinguish ,is only little bit softer.

It comes from 

Coleman Township,Cobalt area,Cobalt-Gowganda region, Timiskamining District,Ontario,Canada

Size: 9x8.9x5.8 mm.

Weight: 5.14 ct.

CODE#7221