SPI Supplies Individual Mounted Microanalysis Standard Item, Minerals Group, Crocoite

SPI Supplies Individual Mounted Microanalysis Standard Item, Minerals Group, Crocoite
SPI Supplies Individual Mounted Microanalysis Standard Item, Minerals Group, Crocoite
$178.60
AvailabilityContact for Availability
ItemAS1140-AB

This is a reflected light micrograph of polished, carbon coated crocoite crystals. The identifying etched label, which is a feature of our standards, is invaluable for navigating in an electron beam instrument. This is a useful standard for both lead and chromium. Metallic lead is very soft and therefore difficult to polish, and galena (PbS), has the problem that the X-ray lines for Pb Ma and S Ka overlap in an EDS system. It is in short supply, hence the small (but adequate) number of crystals in the mount. It is a brilliant orange color.

Click here for a mineralogical account of everything you might want to know about Crocoite.

Element Wt % Oxide Wt %
O 19.80
Cr 16.09 CrO3 30.94
Pb 64.11 PbO 69.06


Sum 100.0 Sum 100.0