DYOS Tool

Natural Minerals Group

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

# AS1100-AB

Celestite*

SrSO4
ElementWt % OxideWt %
O 34.81
S 17.38SO3 43.40
Ca 0.30CaO 0.42
Sr 47.52SrO 56.20
Sum100.0 Sum100.0
Locality: Madagascar
This is a reflected light micrograph of polished, carbon coated celestite crystals. The identifying etched label, which is a feature of our standards, is invaluable for navigating in an electron beam instrument. Celestite has several cleavages which accounts for the pitted surface on some of the crystals. This is the standard for strontium and can also be used for sulfate sulfur. The name is derived from the celestial blue color of some crystals.

* for a mineralogist's account of celestite click here
Name Description SPI # Each
Celestite SPI SuppliesŪ Individual Mounted Microanalysis Standard Item AS1100-AB $199.56
Celestite SPI SuppliesŪ Individual Loose Microanalysis Standard Item AS1105-AB $199.56
   
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Sunday March 14, 2010
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