News archive - May 1999

Monday, May 24, 1999

The Kitchener meteorite

The Kitchener Meteorite was sliced open and shows a black fusion crust of about 0.5mm and a light coloured interior with particles of iron scattered though it.

Monday, May 24, 1999

University of Waterloo rock garden

Peter Russell

Monday, May 24, 1999

Fluoride removal from waters using geomaterials

By: Xanxin Wang, Ph.D., 
China University of Geosciences (Wuhan)
Visiting professor at the University of Waterloo (1998-1999)

The element fluorine, ranking thirteenth in abundance in the Earth's Crust, is used by higher life forms in the structure of bones and teeth. The importance of fluoride in forming human teeth and the role of fluoride intake from drinking water in controlling the characteristics of tooth structure was recognized during the 1930s. Fluoridation of drinking water since then has been a common practice in many countries.

Monday, May 24, 1999

Manitoba's Tyndall Stone

By: Mario Coniglio

Introduction

Monday, May 24, 1999

Calcite, limestone and marble

By: Kelly Snyder and Peter Russell

Calcite

A mineral consisting largely of calcium carbonate (CaCO3 ). Next to quartz, it is the most abundant of the Earth's minerals. Crystallizing in the hexagonal system, calcite is noted for its wide variety of crystalline forms.

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