Looks like I'm good at guessing. I just saw the melting point and the crystalline structure and I made an educated guess on it being bismuth (puts feather in cap, woot!)
Ok, so let me clear a few things up here:
bismuth sucks to dissolve in nitric acid, been there done that. If you do dissolve it, make sure you use dilute nitric acid! Conc. nitric acid you just get a bunch of crappy bismuth oxides. Dilute nitric and you'll get that white powder (actually the oxynitrate Randy) and some equilibrium amount of bismuth.
Oh, keep perchlorates and perchloric acid away from bismuth--it forms strong and highly unstable percussion explosives.
The whole idea with using it instead of lead is a.) it's oxides won't kill you; in fact, they're really pretty looking! b.) it's on par with collecting gold, silver, Pt, and Pd, melts at lower temp. with lower vapour pressure.
For an assay, you want to make sure you buy pure bismuth!
Here's a good source:
http://www.lmine.com/Merchant2/merchant.mvc?Screen=CTGY&Category_Code=bismuth
Treat it just like you would lead, except I think magnesia is the cupel of choice, not bone ash/phosphate.
Ok, so let me clear a few things up here:
bismuth sucks to dissolve in nitric acid, been there done that. If you do dissolve it, make sure you use dilute nitric acid! Conc. nitric acid you just get a bunch of crappy bismuth oxides. Dilute nitric and you'll get that white powder (actually the oxynitrate Randy) and some equilibrium amount of bismuth.
Oh, keep perchlorates and perchloric acid away from bismuth--it forms strong and highly unstable percussion explosives.
The whole idea with using it instead of lead is a.) it's oxides won't kill you; in fact, they're really pretty looking! b.) it's on par with collecting gold, silver, Pt, and Pd, melts at lower temp. with lower vapour pressure.
For an assay, you want to make sure you buy pure bismuth!
Here's a good source:
http://www.lmine.com/Merchant2/merchant.mvc?Screen=CTGY&Category_Code=bismuth
Treat it just like you would lead, except I think magnesia is the cupel of choice, not bone ash/phosphate.