SPI Minerals Group

	Element	%		Oxide	%		tugtupite
	Be	1.93		BeO	5.36				This is a reflected light micrograph of polished, carbon coated tugtupite crystals. The identifying etched label, which is a feature of our standards, is invaluable for navigating in an electron beam instrument. This is a prized standard because it contains beryllium and chlorine in major amounts. It is named after the type locality at Tugtup in Greenland.
	O	41.05
	Na	19.66		Na2O	26.50
	Al	5.77		Al2O3	10.90
	Si	24.02		SiO2	51.39
	Cl	7.58		Cl	7.58
	Sum	100.0		Sum	101.7

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Name	Description	SPI #	Each
Tugtupite	SPI SuppliesŪ Individual Mounted Microanalysis Standard Item	AS1370-AB	$199.56