中国地球化学学报（英文版）2008，Vol.27Issue(2)：140-149,10.
Characterization of some Egyptian serpentinites used as ornamental stones
Characterization of some Egyptian serpentinites used as ornamental stones
I.S.Ismael 1M.S.Hassan1
作者信息
- 1. Faculty of Education, Suez Canal University, Suez, Egypt Central Metallurgical Research & Development Institute, P.O. Box 87 Helwan, Cairo, Egypt
- 折叠
摘要
Abstract
Egypt is characterized by wide occurrence of serpentinites, particularly in the central and southern parts of Eastern Desert. There are several cooperate factors that affect the serpentinites used as ornamental stones. These factors involve mineralogical characteristics (including mineral composition and microstructure parameter), physical properties and mechanical properties. Antigorite is an essential serpentinite mineral, with a minor amount of chrysotile. Talc, carbonates (magnesite and dolomite) and tremolite are the main associated minerals. Quality and quantity of associated minerals such as talc and carbonates (dolomite and magnesite) affect the properties of serpen-tinites used as ornamental stones. Carbonates are resistant to weathering but suffer from acidic cleaning agents in interior use, whereas serpentinites with a high content of talc used on external faces undergo an increase in volume and a consequent rapid degradation. Studied serpentinites are characterized by relatively small grain size with foliat-ed texture, low water absorption, low porosity, and high abrasion resistance. In the samples studied the uniaxial compressive strength (UCS) varies between 89 and 189 MPa, with an average of 152 MPa. According to the classifi-cation of Bell (1992), sample No. B8 is very high in strength while the rest high in strength.关键词
serpentinite/ ornamental stone/ water absorption/ specific gravity/ grain size/ uniaxial compressive strengthKey words
serpentinite/ ornamental stone/ water absorption/ specific gravity/ grain size/ uniaxial compressive strength分类
天文与地球科学引用本文复制引用
I.S.Ismael,M.S.Hassan..Characterization of some Egyptian serpentinites used as ornamental stones[J].中国地球化学学报（英文版）,2008,27(2):140-149,10.
