SPI Supplies

Chrome Diopside (Mg,Cr)CaSi2O6

Locality: Batbjerg, E. Greenland

Element%Oxide%
O43.92
Na0.33 Na2O0.44
Mg10.34 MgO17.14
Si25.52 SiO254.59
Ca18.23 CaO25.50
Ti0.06 TiO2 0.10
Cr0.34 Cr2O3 0.50
Fe1.08 FeO 1.39
Sum100.0 Sum100.0
200 µ m
This is a reflected light micrograph of polished, carbon coated chrome diopside crystals. The identifying etched label, which is a feature of our standards, is invaluable for navigating in an electron beam instrument. This material is a good standard for Cr in silicates where, when it occurs, is usually in small concentrations. Due to the presence of chromium (Greek root chrom = color) the material is brilliant green which can be seen when the mount is viewed with the naked eye.
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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 March 21, 2010
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