Native Antimony

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Antimony, Native

 

a mineral composed of Sb and sometimes having admixtures of As, Bi, and Ag (up to 5 percent). Native antimony crystallizes in the trigonal system and occurs as granular masses, sinters, and rhombohedral lamellar crystals. The mineral is tin white with yellow iridescence and has a metallic luster. Native antimony has a hardness on Mohs’ scale of 3–3.5; it is brittle and has a density of 6,610–6,730 kg/m3.

Antimony is formed from a deficiency of S in low-temperature hydrothermal antimony, antimony-gold-silver, and copper-lead-zinc-antimony-silver-arsenic deposits, as well as in high-temperature pneumatolytic-hydrothermal antimony-silver-tungsten deposits. In the latter case, the content of Sb may be of commercial importance, as in the deposits at Seinäjoki, Finland.

REFERENCES

Mineraly: Spravochnik, vol. 1. Moscow, 1960.
Pääkkönen, V. On the Geology and Mineralogy of the Occurrence of Native Antimony at Seinäjoki. Helsinki, 1966.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
While "native antimony" found in pebbles and boulders found in the flats could be exported without smelting, the sulphides found in lodes and rolled boulders provided between 18 and 80% pure sulphides.
Native antimony is a relatively common mineral in some parts of mine.
Senarmontite is a product of hypergene alteration of stibnite and native antimony, occurring along the margins of these minerals (Andras et al., 1993b).
(1993b) Native antimony in the Pezinok deposit, Male Karpaty Mts.
The occurrence of native antimony at the Engineer mine is first mentioned by Thomson (1937) and Walker (1921).
Stages of mineralization and faulting were probably pulsating, as evidenced by mylonitized fragments of early dark-colored quartz in later sheared native antimony, drag-folding in the schistosity of the rocks at their contact with the main vein, and the presence of slickensides on vein-parallel fault planes.
The predominance of stibnite or native antimony in the latter veins was probably controlled by local activities of sulfur, oxygen and hydrogen during vein formation.
One of the primary ore minerals, native antimony occurs most commonly as pure, massive vein sections up to 15 cm wide.
The first of these was collected from a sheared quartz vein adjacent to a native antimony vein in the upper level of the underground workings, and the second came from dump material.
Along with gudmundite and native antimony, stibnite was one of the primary ore minerals mined from this deposit.
The most commonly associated species are quartz, stibnite, native antimony, kermesite and senarmontite.
Among these minerals are arsenopyrite and chalcostibite, both of which occur sparingly as isolated euhedral crystals in some of the massive native antimony; jamesonite, which was noted as an inclusion in a single grain of gudmundite; and rare, scattered grains of pyrite and chalcopyrite.

Full browser ?