Native Antimony

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.

单词	native antimony
释义	Native Antimony 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.
随便看	association for schools of public health in the european region association for science education/british educational research association association for science in the public interest association for science, technology, and innovation association for scottish literary studies association for scriptural knowledge association for senior day health association for separated and divorced catholics association for service disabled veterans association for services management international association for services managers international association for simula users association for social advancement association for social and economic research into the caribbean and central america association for social anthropology in oceania association for social work and welfare education association for sociology in south africa association for software testing association for solar energy promotion association for solidarity with asylum seekers and migrants association for specialist fire protection association for specialists in group work association for spina bifida and hydrocephalus association for spirit at work association for spirit releasement therapies