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A lead-gray mineral, Sb2S3, that is the chief source of antimony.

[French stibine, stibnite (from Latin stibium, antimony; see stibine) + -ite.]


(Minerals) 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]


(ˈstɪb naɪt)

a soft, lead-gray mineral, antimony trisulfide, Sb2S3, found in radiating groups of long prismatic crystals and in granular masses: the principal ore of antimony.
[1850–55; stib (i) ne (in obsolete sense “stibnite”) + -ite1]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.stibnite - a soft grey mineralstibnite - a soft grey mineral; the chief ore of antimony
antimony, atomic number 51, Sb - a metallic element having four allotropic forms; used in a wide variety of alloys; found in stibnite
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
References in periodicals archive ?
The stibnite specimens which were gathered from the great cavity in Shaft #1 at Qingjiang in February and March 2004 must be regarded as the ne plus ultra of all stibnites so far discovered in China.
While Jack loves the high luster on his stibnites, cassiterites and especially his golds, he is accepting of the satiny luster on his benitoites, barites and rhodonites.
Almost all of them carry the same mix of minerals--a few stibnites, a few green, very heavily oiled fluorites, quartzes, barites--in various qualities and quantities.
Of course they brought along a marvelous exhibit including cinnabars, stibnites, orpiment, fine botryoidal malachite and an 11-cm realgar plate covered with bright red crystals.
The same is true of the Chinese stibnites being offered.
Dave Bunk showed some fine new stibnites from Nevada, as well as a choice selection of rare Mexican silver sulfosalts including polybasite from Guanajuato and choice stephanites from Zacatecas.
Danny Trinchillo, the dealer responsible for bringing many fine minerals out of China and Russia, displayed some of his best, including Chinese stibnites, pyromorphites and Dal'negorsk sulfides.
But Michel Jouty was the one with the three champion (of those I saw) Lushi mine stibnites, the biggest a group easily a foot and a half across and a foot high, of highest luster and very little damage, with thick, terminated spears sticking out all over.
Casey and Jane Jones of Geoprime have been busy in Nevada as usual, with a fine selection of stibnites from the Murray mine, Elko County.
Raura is known for the similarity of its specimens to those from Romania, especially the dull, stout stibnites and the pale pink drusy rhodochrosites.
Probably erroneously labeled as from the San Genaro mine, the stibnites are most likely from the Caudalosa mines.