SPI Minerals Group

	Element	%		Oxide	%		rhodonite
	O	37.08							This is a reflected light micrograph of polished, carbon coated rhodonite crystals. The identifying etched label, which is a feature of our standards, is invaluable for navigating in an electron beam instrument. Similar to bustamite, another manganese rich silicate, also in this standard, bustamite has more manganese, thus providing an opportunity for cross checking composition of Ca Mn silicates. The small amount of material used reflects the extreme rarity of high quality rhodonite. The name is from the Greek rhodon - a rose, referring to its color. Locality: Franklin Furnace, NJ, USA
	Mg	0.53		MgO	0.88
	Si	21.46		SiO2	45.91
	Ca	4.56		CaO	6.38
	Mn	29.15		MnO	37.64
	Fe	1.20		FeO	1.54
	Zn	6.02		ZnO	7.49
	Sum	100.0		Sum	99.8

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Name	Description	SPI #	Each
Rhodonite	SPI SuppliesŪ Individual Mounted Microanalysis Standard Item	AS1320-AB	$199.56