DYOS Tool

Natural Minerals Group

From the standards library of the SPI Supplies and the C. M. Taylor Company

# AS5250-AB

Quartz

SiO2
ElementWt % OxideWt %
O 53.26
Si 46.74SiO2 100.00
Sum100.0 Sum100.0
2mm approx cubes
Polished quartz in T100-52 mount
Name Description SPI # Each
Quartz SPI SuppliesŪ Individual Mounted Microanalysis Standard Item AS5250-AB $
Quartz SPI SuppliesŪ Individual Loose Microanalysis Standard Item AS5255-AB $

# AS1310-AB

Quartz

Alternate - either version of this item may be used in our Off-The-Shelf Standards

SiO2
ElementWt % OxideWt %
O 53.26
Si 46.74SiO2 99.99
Sum100.0 Sum100.0
Locality: Minas Gerais, Brazil
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.
Name Description SPI # Each
Quartz SPI SuppliesŪ Individual Mounted Microanalysis Standard Item AS1310-AB $
Quartz SPI SuppliesŪ Individual Loose Microanalysis Standard Item AS1315-AB $
   
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