Definition of stibnite
: a mineral that consists of the trisulfide of antimony and occurs in orthorhombic lead-gray crystals of metallic luster or in massive form
Origin of stibnite
alteration of obsolete English stibine stibnite, from French, from Latin stibium antimony, from Greek stibi, from Egyptian sṭm
First Known Use: circa 1854
Learn More about stibnite
Britannica.com: Encyclopedia article about "stibnite"
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