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Sepiolite Deposits of the Las Vegas, Nevada Area

Published online by Cambridge University Press:  01 July 2024

J. L. Post
J. L. Post*
Affiliation:
Department of Civil Engineering, California State University, Sacramento, California 95819
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Abstract

Four sepiolite deposits of different origin, which occur near Las Vegas, Nevada, are compared and described. They include a playa deposit, a valley terrace deposit, and two types of vein deposits. The physical and chemical characteristics of the four materials are described, the engineering and commercial features are considered, and the varied origins of the sepiolite are discussed. X-ray powder diffraction data, infrared spectra, thermal characteristics, and chemical analyses are given for the Two Crows sepiolite. The vein deposit is proposed for use as a clay mineral reference standard because of its purity and availability. The apparent diverse morphology of the sepiolite deposits is shown with its common, lathlike basic structure.

Резюме

Резюме

Развитые вблизи Лас Вегаса,Невада,четыре вида отложений сепиолита различного происхождения,которые сравниваются и описываются,включают плейасовые осадки,долинные террасовые осадки и два вида жильных отложений.Приводятся физические и химические характеристики всех четырех разновидностей, рассматриваются технические и коммерческие аспекты и обсуждаются различные условия образования сепиолита.Приводятся данные исследований порошков методом дифракции рентгеновских лучей,спектры инфракрасного излучения,тепловые характеристики и химические анализы сепиолита “Ту Краус”.Предлагается использовать жильные отложения в качестве эталонного глинистого материала,в связи с его чистотой и доступностью.Показана явная разнотипность морфологии сесепиолитовых отложений одновременно с их общей лейстовидной структурой.

Keywords

FibrousMagnesiumPalygorskiteSepiolite
Type
Research Article
Information
Clays and Clay Minerals , Volume 26 , Issue 1 , February 1978 , pp. 58 - 64
Copyright
Copyright © 1978, The Clay Minerals Society

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