DYOS Tool

Natural Minerals Group

From the standards library of the SPI Supplies and the C. M. Taylor Company

# AS1110-AB

Chlorite*

(Mg,Fe,Al)6(Al,Si)4O10(OH)8
ElementWt % OxideWt %
H 1.54H2O 13.76
C 0.02CO2 0.07
O 51.14
F 0.02F 0.02
Mg 20.21MgO 33.51
Al 9.57Al2O3 18.08
Si 14.04SiO2 30.04
Ca 0.02CaO 0.03
Cr 0.67Cr2O3 0.98
Fe 2.57FeO 3.31
Ni 0.19NiO 0.24
Sum100.0 Sum100.0
Locality: West Chester, PA, USA
This is a reflected light micrograph of a polished, carbon coated chlorite crystal. The identifying etched label, which is a feature of our standards, is invaluable for navigating in an electron beam instrument. Chlorite is a flexible platy mineral which rarely forms large crystals. In this case the crystal is seen edge-on, with sheaf-like flakes at the top. The name refers to the green color of most crystals (Greek chloros = green). This sample is the variety clinochlore.

* for a mineralogist's account of chlorite click here
Name Description SPI # Each
Chlorite SPI SuppliesŪ Individual Mounted Microanalysis Standard Item AS1110-AB $199.56
Chlorite SPI SuppliesŪ Individual Loose Microanalysis Standard Item AS1115-AB $199.56
   
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Sunday March 21, 2010
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