SPI Minerals Group

	Element	%		Oxide	%		albite
	O	48.76							This is a reflected light micrograph of a polished, carbon coated albite crystal. The identifying etched label, which is a feature of our standards, is invaluable for navigating in an electron beam instrument. Albite is the sodium rich member of the plagioclase felspars and is a useful standard for felspars and other aluminosilicates. The sodium shows a tendency to migrate under high beam currents, so caution is advised. The name refers to its white color (Latin - albus). Locality: Strickland Quarry, Haddam, CT, USA
	Na	8.60		Na2O	11.59
	Al	10.34		Al2O3	19.54
	Si	32.03		SiO2	68.52
	K	0.18		K2O	0.22
	Ca	0.09		CaO	0.13
	Sum	100.0		Sum	100.0

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Name	Description	SPI #	Each
Albite	SPI SuppliesŪ Individual Mounted Microanalysis Standard Item	AS1010-AB	$199.56