出典:Wiktionary
cylindrite (countable かつ uncountable, 複数形 cylindrites)
出典:Wikipedia
出典:『Wikipedia』 (2011/06/20 14:48 UTC 版)
Cylindrite is a sulfosalt mineral containing tin, lead, antimony and iron with formula: Pb3Sn4FeSb2S14. It forms triclinic pinacoidal crystals which often occur as tubes or cylinders which are in fact rolled sheets. It has a black to lead grey metallic colour with a Mohs hardness of 2 to 3 and a specific gravity of 5.4.