Matter
Name
Pyroxene sub-µm grains
Family
mineral
Level
local matter
Origins
laboratory
Provider
Daniel Britt, Center for Lunar & Asteroid Surface Science, Partnership 1 Building, Suite 211, 12354 Research Parkway, Orlando, Florida
Preparation
sieved fraction
Phase type
solid
Component type (group)
mineral (silicate mineral)
Texture
loose granular
Type of porosity
particulate
Grain sizes
Grains Size min Size max Size median Size width Size mass fraction Grain shape
#1 0.27 ${\mu}m$ 1.0 None
Size distribution
The average grain size is 0.41 µm, and the standard deviation 0.42 µm. The size distribution of the counted grains is provided in the documentation section below.
Size method
Grains sizes were measured on images obtained by Scanning Electron Microscopy (SEM).
Number
7
Mode of mixing
homogeneous mixing
Materials
  Name Arrangement Mass (g) Mass fraction Abundance comments
Enstatite 0.44
Diopside 0.11
Talc 0.27
Plagioclase 0.09
Amphibole trace
Quartz trace
Kaolinite trace
Title
Grinding and sieving

Precursors

Matters

Produced matter

Matter
Pyroxene sub-µm grains (this matter)
Processing steps
Step Date Type Process Changes
#1 mechanical Wet Grinding: the 25-50 µm powder was put into the grinding bowl of a planetary grinder with 500-µm diameter ZrO2 balls in ultra-pure ethanol for 150 minutes
#2 mechanical Wet Sieving: the grinded material was passed through a 25-µm sieve using ethanol