SPI Supplies

Kaersutite Ca2Na(Mg,Fe)4TiSi6Al2O22(OH)2

Locality: Kangerdlugssuaq, E. Greenland

Element%Oxide%
H0.22H2O 1.97
O42.83
Na1.81 Na2O 2.44
Mg7.57 MgO12.55
Al6.54 Al2O312.36
Si18.74 SiO240.09
K0.97 K2O 1.17
Ca8.26 CaO11.56
Ti3.02 TiO2 5.04
Mn0.14 MnO 0.18
Fe9.51 FeO12.23
Sum99.6 Sum99.6
200 µ m
This is a reflected light micrograph of polished, carbon coated kaersutite crystals. The identifying etched label, which is a feature of our standards, is invaluable for navigating in an electron beam instrument. Kaersutite is an amphibole, which allows a wide range of chemical elements to enter its structure. It therefore has many possibilities as a standard. The moderate amounts of potassium, titanium and sodium, for instance, as well as the more abundant silicon, aluminium and calcium. It is named after the type locality, Kaersut, in Greenland.
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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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Monday October 13, 2008
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