Structure and physical properties of natural sphalerites and galena from the Dal'negorsk deposit in the temperature range 4-300 K / Gulyaeva R. I.,Selivanov E. N.,Dorogina G. A.,Uporov S. A.,Pryanichnikov S. V. // RUSSIAN GEOLOGY AND GEOPHYSICS. - 2017. - V. 58, l. 8. - P. 990-999.

ISSN/EISSN:

1068-7971 / 1878-030X

Type:

Article

Abstract:

The structure and physical properties of natural sphalerites and galena from the Dal'negorsk ore massif were investigated. A nonlinear temperature dependence of the unit-cell parameters of sphalerite in the range 80-300 K was established by X-ray diffraction. The microstructure and elemental composition of sphalerites with different iron contents were studied. The results show that an increase in iron content in sphalerite solid solution leads to an increase in the unit-cell parameters. It is found that sphalerites are insulators in the temperature range from 4 to 300 K, as their absolute electrical resistivity is greater than 1 MOhm.m. The temperature dependence of sphalerite magnetization has a peak corresponding to the mineral transition from antiferromagnetic to ferrimagnetic state with a Neel temperature of about 90 K in fields of 0, 0.15, and 1.00 T. The magnetic state of natural galena is due to a sphalerite impurity: The extrema in the temperature magnetization curve are typical of sphalerite. (C) 2017, V.S. Sobolev IGM, Siberian Branch of the RAS. Published by Elsevier B.V. All rights reserved.

Author keywords:

sphalerite; galena; structure; composition; electrical resistance; magnetic properties MAGNETIC-SUSCEPTIBILITY; THERMAL-EXPANSION; ZNS; ZN1-XFEXS; SULFIDES; FE

DOI:

10.1016/j.rgg.2017.07.010

Web of Science ID:

ISI:000407795300011

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	AUG
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
EISSN	1878-030X
Keywords-Plus	MAGNETIC-SUSCEPTIBILITY; THERMAL-EXPANSION; ZNS; ZN1-XFEXS; SULFIDES; FE
Research-Areas	Geology
Web-of-Science-Categories	Geosciences, Multidisciplinary
Author-Email	gulroza@mail.ru
ResearcherID-Numbers	Selivanov, Evgeniy/T-7296-2017
Number-of-Cited-References	35
Journal-ISO	Russ. Geol. Geophys.
Doc-Delivery-Number	FD8SV