SPI Minerals Group

	Element	%		Oxide	%		spodumene
	Li	3.73		Li2O	8.03				This is a reflected light micrograph of a polished, carbon coated spodumene crystal. The identifying etched label, which is a feature of our standards, is invaluable for navigating in an electron beam instrument. This is the only standard in the set containing a major amount of lithium, which, although it is too light to produce useful X-rays for analysis, may be of value in ion beam analysis. This makes it a "standard of omission" whose composition cannot be determined completely by X-ray spectroscopy, but is still valuable for comparison with unknowns. It is a gem quality material from the Minas Gerais pegmatite. Locality: Minas Gerais, Brazil
	O	51.54
	Al	14.36		Al2O3	27.14
	Si	30.19		SiO2	64.59
	Fe	0.18		Fe2O3	0.26
	Sum	100.0		Sum	100.0

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Name	Description	SPI #	Each
Spodumene	SPI SuppliesŪ Individual Mounted Microanalysis Standard Item	AS1350-AB	$199.56