SPI Supplies

Quartz SiO2

Locality: Minas Gerais, Brazil

Element%Oxide%
O53.26
Si46.74 SiO2100.00
Sum100.0 Sum100.0
200 µ m
This is a reflected light micrograph of polished, carbon coated quartz crystals. The identifying etched label, which is a feature of our standards, is invaluable for navigating in an electron beam instrument. Quartz is one of the most common, and also the most pure, minerals, consisting essentially of nothing but silicon dioxide. This gem specimen from the famous Minas Gerais locality is no exception. It is extremely stable as ubiquitous presence in sandstones testifies. It is an essential item in any set of standards relating to silicates, and rocks in general. The name is from old German.
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Cautionary Note
The compositional and other data shown here are intended to convey typical values for this item and do not neccessarily correspond in detail to standard mounts supplied in the past or to be supplied in the future. Items are changed from time to time as stock is exhausted or alternate choices are preferred. These data should, however, give someone contemplating the purchase of an SPI standard a fair indication of what they may expect to receive. Records are kept of all mounts sold so that, should you lose your documentation at some time in the future, we will be happy to replace it at no charge.


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Sunday July 06, 2008
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