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SPI Supplies Individual Loose Microanalysis Standard Item, Minerals Group, Benitoite (alternate to A
SPI Supplies Individual Loose Microanalysis Standard Item, Minerals Group, Benitoite (alternate to A
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SPI Supplies Individual Loose Microanalysis Standard Item, Minerals Group, Benitoite (alternate to A

Item Number AS1065-AB
Availability Contact for Availability
Price  $207.48

SPI Supplies Individual Loose Microanalysis Standard Item, Minerals Group, Benitoite

This is a reflected light micrograph of a polished, carbon coated benitoite crystal. The identifying etched label, which is a feature of our standards, is invaluable for navigating in an electron beam instrument. Benitoite is a gem mineral which gives a beautiful blue cathodoluminescence in the electron beam, thus making the spot clearly visible in an optical microscope. As a standard for Ba and Ti it is compromised by the proximity of the X-ray lines Ba Lα and Ti Kα (4.47 and 4.51 keV respectively). Its name comes from the type locality for this mineral in San Benito County, California.

Element Wt % Oxide Wt %
O 34.83
Si 20.38 SiO2 43.60
Ti 11.58 TiO2 19.32
Ba 33.21 BaO 37.08


Sum 100.0 Sum 100.0