stibnite

[stib-nahyt]

stib·nite

[stib-nahyt]
noun
a soft mineral, antimony sulfide, Sb2S3, lead-gray in color with a metallic luster, occurring in crystals, often acicular, or in bladed masses: the most important ore of antimony.

Origin:
1850–55; stib(i)ne (in obsolete sense “stibnite”) + -ite1
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Stibnite is always a great word to know.
So is zedonk. Does it mean:
the offspring of a zebra and a donkey.
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
Collins
World English Dictionary
stibnite (ˈstɪbnaɪt)
 
n
a soft greyish mineral consisting of antimony sulphide in orthorhombic crystalline form. It occurs in quartz veins and is the chief ore of antimony. Formula: Sb2S3
 
[C19: from obsolete stibine stibnite + -ite1]

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